docs: collect refreshed mongo-ops wiki site (API-correct overhaul, v0.1.5)
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<span class="md-ellipsis">
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02 components
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Core Components
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</span>
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<input class="md-nav__toggle md-toggle" type="checkbox" id="__toc">
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<label class="md-nav__title" for="__toc">
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<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="#use-case-2-custom-repository-with-business-logic" class="md-nav__link">
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<a href="#whats-new" class="md-nav__link">
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<span class="md-ellipsis">
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Use Case 2: Custom Repository with Business Logic
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📦 What's New?
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="#example" class="md-nav__link">
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<span class="md-ellipsis">
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🚀 Example
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</span>
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</a>
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<li class="md-nav__item">
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<a href="#tips" class="md-nav__link">
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💡 Tips
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</span>
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</a>
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<li class="md-nav__item">
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<a href="#related" class="md-nav__link">
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Related
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<h1>Custom Repo</h1>
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<h3 id="use-case-2-custom-repository-with-business-logic">Use Case 2: Custom Repository with Business Logic</h3>
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<p><strong>Scenario:</strong> E-commerce product catalog with custom search and filtering.</p>
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<div class="language-python highlight"><span class="filename">Python</span><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">mongo_ops</span><span class="w"> </span><span class="kn">import</span> <span class="n">BaseDocument</span><span class="p">,</span> <span class="n">BaseRepository</span>
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<a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="kn">from</span><span class="w"> </span><span class="nn">typing</span><span class="w"> </span><span class="kn">import</span> <span class="n">Optional</span><span class="p">,</span> <span class="n">List</span>
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<a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="kn">from</span><span class="w"> </span><span class="nn">pydantic</span><span class="w"> </span><span class="kn">import</span> <span class="n">Field</span>
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<a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a>
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<a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="k">class</span><span class="w"> </span><span class="nc">Product</span><span class="p">(</span><span class="n">BaseDocument</span><span class="p">):</span>
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<a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a> <span class="n">name</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="n">Field</span><span class="p">(</span><span class="o">...</span><span class="p">,</span> <span class="n">min_length</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
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<a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a> <span class="n">description</span><span class="p">:</span> <span class="nb">str</span>
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<a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a> <span class="n">price</span><span class="p">:</span> <span class="nb">float</span> <span class="o">=</span> <span class="n">Field</span><span class="p">(</span><span class="o">...</span><span class="p">,</span> <span class="n">gt</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span>
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<a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a> <span class="n">category</span><span class="p">:</span> <span class="nb">str</span>
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<a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a> <span class="n">in_stock</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span>
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<a id="__codelineno-0-11" name="__codelineno-0-11" href="#__codelineno-0-11"></a> <span class="n">quantity</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="n">Field</span><span class="p">(</span><span class="n">default</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">ge</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span>
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<a id="__codelineno-0-12" name="__codelineno-0-12" href="#__codelineno-0-12"></a> <span class="n">tags</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
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<a id="__codelineno-0-13" name="__codelineno-0-13" href="#__codelineno-0-13"></a>
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<a id="__codelineno-0-14" name="__codelineno-0-14" href="#__codelineno-0-14"></a><span class="k">class</span><span class="w"> </span><span class="nc">ProductRepository</span><span class="p">(</span><span class="n">BaseRepository</span><span class="p">[</span><span class="n">Product</span><span class="p">]):</span>
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<a id="__codelineno-0-15" name="__codelineno-0-15" href="#__codelineno-0-15"></a> <span class="k">def</span><span class="w"> </span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<a id="__codelineno-0-16" name="__codelineno-0-16" href="#__codelineno-0-16"></a> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="s2">"products"</span><span class="p">,</span> <span class="n">Product</span><span class="p">)</span>
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<a id="__codelineno-0-17" name="__codelineno-0-17" href="#__codelineno-0-17"></a>
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<a id="__codelineno-0-18" name="__codelineno-0-18" href="#__codelineno-0-18"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">search_by_name</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">query</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">List</span><span class="p">[</span><span class="n">Product</span><span class="p">]:</span>
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<a id="__codelineno-0-19" name="__codelineno-0-19" href="#__codelineno-0-19"></a><span class="w"> </span><span class="sd">"""Search products by name (case-insensitive)"""</span>
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<a id="__codelineno-0-20" name="__codelineno-0-20" href="#__codelineno-0-20"></a> <span class="n">docs</span> <span class="o">=</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">collection</span><span class="o">.</span><span class="n">find</span><span class="p">({</span>
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<a id="__codelineno-0-21" name="__codelineno-0-21" href="#__codelineno-0-21"></a> <span class="s2">"name"</span><span class="p">:</span> <span class="p">{</span><span class="s2">"$regex"</span><span class="p">:</span> <span class="n">query</span><span class="p">,</span> <span class="s2">"$options"</span><span class="p">:</span> <span class="s2">"i"</span><span class="p">}</span>
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<a id="__codelineno-0-22" name="__codelineno-0-22" href="#__codelineno-0-22"></a> <span class="p">})</span><span class="o">.</span><span class="n">to_list</span><span class="p">(</span><span class="n">length</span><span class="o">=</span><span class="mi">100</span><span class="p">)</span>
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<a id="__codelineno-0-23" name="__codelineno-0-23" href="#__codelineno-0-23"></a> <span class="k">return</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="p">(</span><span class="o">**</span><span class="n">doc</span><span class="p">)</span> <span class="k">for</span> <span class="n">doc</span> <span class="ow">in</span> <span class="n">docs</span><span class="p">]</span>
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<a id="__codelineno-0-24" name="__codelineno-0-24" href="#__codelineno-0-24"></a>
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<a id="__codelineno-0-25" name="__codelineno-0-25" href="#__codelineno-0-25"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">get_by_category</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">category</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">in_stock_only</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="n">List</span><span class="p">[</span><span class="n">Product</span><span class="p">]:</span>
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<a id="__codelineno-0-26" name="__codelineno-0-26" href="#__codelineno-0-26"></a><span class="w"> </span><span class="sd">"""Get products by category"""</span>
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<a id="__codelineno-0-27" name="__codelineno-0-27" href="#__codelineno-0-27"></a> <span class="n">filter_query</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"category"</span><span class="p">:</span> <span class="n">category</span><span class="p">}</span>
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<a id="__codelineno-0-28" name="__codelineno-0-28" href="#__codelineno-0-28"></a> <span class="k">if</span> <span class="n">in_stock_only</span><span class="p">:</span>
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<a id="__codelineno-0-29" name="__codelineno-0-29" href="#__codelineno-0-29"></a> <span class="n">filter_query</span><span class="p">[</span><span class="s2">"in_stock"</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
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<a id="__codelineno-0-30" name="__codelineno-0-30" href="#__codelineno-0-30"></a> <span class="k">return</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_many</span><span class="p">(</span><span class="nb">filter</span><span class="o">=</span><span class="n">filter_query</span><span class="p">)</span>
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<a id="__codelineno-0-31" name="__codelineno-0-31" href="#__codelineno-0-31"></a>
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<a id="__codelineno-0-32" name="__codelineno-0-32" href="#__codelineno-0-32"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">get_low_stock</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">threshold</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">10</span><span class="p">)</span> <span class="o">-></span> <span class="n">List</span><span class="p">[</span><span class="n">Product</span><span class="p">]:</span>
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<a id="__codelineno-0-33" name="__codelineno-0-33" href="#__codelineno-0-33"></a><span class="w"> </span><span class="sd">"""Get products with low stock"""</span>
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<a id="__codelineno-0-34" name="__codelineno-0-34" href="#__codelineno-0-34"></a> <span class="k">return</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_many</span><span class="p">(</span>
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<a id="__codelineno-0-35" name="__codelineno-0-35" href="#__codelineno-0-35"></a> <span class="nb">filter</span><span class="o">=</span><span class="p">{</span><span class="s2">"quantity"</span><span class="p">:</span> <span class="p">{</span><span class="s2">"$lt"</span><span class="p">:</span> <span class="n">threshold</span><span class="p">},</span> <span class="s2">"in_stock"</span><span class="p">:</span> <span class="kc">True</span><span class="p">}</span>
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<a id="__codelineno-0-36" name="__codelineno-0-36" href="#__codelineno-0-36"></a> <span class="p">)</span>
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<a id="__codelineno-0-37" name="__codelineno-0-37" href="#__codelineno-0-37"></a>
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<a id="__codelineno-0-38" name="__codelineno-0-38" href="#__codelineno-0-38"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">update_stock</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">product_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">quantity_delta</span><span class="p">:</span> <span class="nb">int</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">Product</span><span class="p">]:</span>
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<a id="__codelineno-0-39" name="__codelineno-0-39" href="#__codelineno-0-39"></a><span class="w"> </span><span class="sd">"""Update product stock (increment/decrement)"""</span>
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<a id="__codelineno-0-40" name="__codelineno-0-40" href="#__codelineno-0-40"></a> <span class="n">result</span> <span class="o">=</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">collection</span><span class="o">.</span><span class="n">find_one_and_update</span><span class="p">(</span>
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<a id="__codelineno-0-41" name="__codelineno-0-41" href="#__codelineno-0-41"></a> <span class="p">{</span><span class="s2">"_id"</span><span class="p">:</span> <span class="n">ObjectId</span><span class="p">(</span><span class="n">product_id</span><span class="p">)},</span>
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<a id="__codelineno-0-42" name="__codelineno-0-42" href="#__codelineno-0-42"></a> <span class="p">{</span><span class="s2">"$inc"</span><span class="p">:</span> <span class="p">{</span><span class="s2">"quantity"</span><span class="p">:</span> <span class="n">quantity_delta</span><span class="p">},</span> <span class="s2">"$set"</span><span class="p">:</span> <span class="p">{</span><span class="s2">"updated_at"</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()}},</span>
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<a id="__codelineno-0-43" name="__codelineno-0-43" href="#__codelineno-0-43"></a> <span class="n">return_document</span><span class="o">=</span><span class="kc">True</span>
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<a id="__codelineno-0-44" name="__codelineno-0-44" href="#__codelineno-0-44"></a> <span class="p">)</span>
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<a id="__codelineno-0-45" name="__codelineno-0-45" href="#__codelineno-0-45"></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="p">(</span><span class="o">**</span><span class="n">result</span><span class="p">)</span> <span class="k">if</span> <span class="n">result</span> <span class="k">else</span> <span class="kc">None</span>
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<a id="__codelineno-0-46" name="__codelineno-0-46" href="#__codelineno-0-46"></a>
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<a id="__codelineno-0-47" name="__codelineno-0-47" href="#__codelineno-0-47"></a><span class="c1"># Usage in FastAPI</span>
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<a id="__codelineno-0-48" name="__codelineno-0-48" href="#__codelineno-0-48"></a><span class="kn">from</span><span class="w"> </span><span class="nn">fastapi</span><span class="w"> </span><span class="kn">import</span> <span class="n">FastAPI</span><span class="p">,</span> <span class="n">Query</span>
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<a id="__codelineno-0-49" name="__codelineno-0-49" href="#__codelineno-0-49"></a>
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<a id="__codelineno-0-50" name="__codelineno-0-50" href="#__codelineno-0-50"></a><span class="n">app</span> <span class="o">=</span> <span class="n">FastAPI</span><span class="p">()</span>
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<a id="__codelineno-0-51" name="__codelineno-0-51" href="#__codelineno-0-51"></a><span class="n">product_repo</span> <span class="o">=</span> <span class="n">ProductRepository</span><span class="p">()</span>
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<h1 id="use-case-2-custom-repository-with-business-logic">Use Case 2: Custom Repository with Business Logic</h1>
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<p><strong>Scenario:</strong> An e-commerce product catalog needs search, filtering, and stock updates without Mongo leaking into routes.</p>
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<hr />
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<h2 id="whats-new">📦 What's New?</h2>
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<table>
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<thead>
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<tr>
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<th>Component</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>Repository methods</td>
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<td>Encapsulate queries (<code>$regex</code>, filters, <code>$inc</code>) behind domain methods.</td>
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</tr>
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<tr>
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<td><code>get_many</code></td>
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<td>Filtering + default pagination via the base repository.</td>
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</tr>
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<tr>
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<td>Direct <code>collection</code> access</td>
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<td>For operations with no base-repo helper (regex search, atomic <code>$inc</code>).</td>
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</tr>
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</tbody>
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</table>
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<hr />
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<h2 id="example">🚀 Example</h2>
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<div class="language-python highlight"><span class="filename">Python</span><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">fastapi</span><span class="w"> </span><span class="kn">import</span> <span class="n">FastAPI</span><span class="p">,</span> <span class="n">HTTPException</span><span class="p">,</span> <span class="n">Query</span>
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<a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="kn">from</span><span class="w"> </span><span class="nn">mongo_ops</span><span class="w"> </span><span class="kn">import</span> <span class="n">BaseDocument</span><span class="p">,</span> <span class="n">BaseRepository</span>
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<a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a>
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<a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="c1"># ---------------------------</span>
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<a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="c1"># Model</span>
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<a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a><span class="c1"># ---------------------------</span>
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<a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a><span class="k">class</span><span class="w"> </span><span class="nc">Product</span><span class="p">(</span><span class="n">BaseDocument</span><span class="p">):</span>
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<a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a> <span class="n">name</span><span class="p">:</span> <span class="nb">str</span>
|
||||
<a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a> <span class="n">description</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">""</span>
|
||||
<a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a> <span class="n">price</span><span class="p">:</span> <span class="nb">float</span> <span class="o">=</span> <span class="mf">0.0</span>
|
||||
<a id="__codelineno-0-11" name="__codelineno-0-11" href="#__codelineno-0-11"></a> <span class="n">category</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">""</span>
|
||||
<a id="__codelineno-0-12" name="__codelineno-0-12" href="#__codelineno-0-12"></a> <span class="n">in_stock</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span>
|
||||
<a id="__codelineno-0-13" name="__codelineno-0-13" href="#__codelineno-0-13"></a> <span class="n">quantity</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</span>
|
||||
<a id="__codelineno-0-14" name="__codelineno-0-14" href="#__codelineno-0-14"></a> <span class="n">tags</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
|
||||
<a id="__codelineno-0-15" name="__codelineno-0-15" href="#__codelineno-0-15"></a>
|
||||
<a id="__codelineno-0-16" name="__codelineno-0-16" href="#__codelineno-0-16"></a>
|
||||
<a id="__codelineno-0-17" name="__codelineno-0-17" href="#__codelineno-0-17"></a><span class="c1"># ---------------------------</span>
|
||||
<a id="__codelineno-0-18" name="__codelineno-0-18" href="#__codelineno-0-18"></a><span class="c1"># Repository</span>
|
||||
<a id="__codelineno-0-19" name="__codelineno-0-19" href="#__codelineno-0-19"></a><span class="c1"># ---------------------------</span>
|
||||
<a id="__codelineno-0-20" name="__codelineno-0-20" href="#__codelineno-0-20"></a><span class="k">class</span><span class="w"> </span><span class="nc">ProductRepository</span><span class="p">(</span><span class="n">BaseRepository</span><span class="p">[</span><span class="n">Product</span><span class="p">]):</span>
|
||||
<a id="__codelineno-0-21" name="__codelineno-0-21" href="#__codelineno-0-21"></a> <span class="k">def</span><span class="w"> </span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
||||
<a id="__codelineno-0-22" name="__codelineno-0-22" href="#__codelineno-0-22"></a> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="s2">"products"</span><span class="p">,</span> <span class="n">Product</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-23" name="__codelineno-0-23" href="#__codelineno-0-23"></a>
|
||||
<a id="__codelineno-0-24" name="__codelineno-0-24" href="#__codelineno-0-24"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">search_by_name</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">query</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="nb">list</span><span class="p">[</span><span class="n">Product</span><span class="p">]:</span>
|
||||
<a id="__codelineno-0-25" name="__codelineno-0-25" href="#__codelineno-0-25"></a><span class="w"> </span><span class="sd">"""Case-insensitive name search."""</span>
|
||||
<a id="__codelineno-0-26" name="__codelineno-0-26" href="#__codelineno-0-26"></a> <span class="n">docs</span> <span class="o">=</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">collection</span><span class="o">.</span><span class="n">find</span><span class="p">(</span>
|
||||
<a id="__codelineno-0-27" name="__codelineno-0-27" href="#__codelineno-0-27"></a> <span class="p">{</span><span class="s2">"name"</span><span class="p">:</span> <span class="p">{</span><span class="s2">"$regex"</span><span class="p">:</span> <span class="n">query</span><span class="p">,</span> <span class="s2">"$options"</span><span class="p">:</span> <span class="s2">"i"</span><span class="p">}}</span>
|
||||
<a id="__codelineno-0-28" name="__codelineno-0-28" href="#__codelineno-0-28"></a> <span class="p">)</span><span class="o">.</span><span class="n">to_list</span><span class="p">(</span><span class="n">length</span><span class="o">=</span><span class="mi">100</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-29" name="__codelineno-0-29" href="#__codelineno-0-29"></a> <span class="k">return</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="p">(</span><span class="o">**</span><span class="n">doc</span><span class="p">)</span> <span class="k">for</span> <span class="n">doc</span> <span class="ow">in</span> <span class="n">docs</span><span class="p">]</span>
|
||||
<a id="__codelineno-0-30" name="__codelineno-0-30" href="#__codelineno-0-30"></a>
|
||||
<a id="__codelineno-0-31" name="__codelineno-0-31" href="#__codelineno-0-31"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">get_by_category</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">category</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">in_stock_only</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="nb">list</span><span class="p">[</span><span class="n">Product</span><span class="p">]:</span>
|
||||
<a id="__codelineno-0-32" name="__codelineno-0-32" href="#__codelineno-0-32"></a> <span class="n">filter_query</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"category"</span><span class="p">:</span> <span class="n">category</span><span class="p">}</span>
|
||||
<a id="__codelineno-0-33" name="__codelineno-0-33" href="#__codelineno-0-33"></a> <span class="k">if</span> <span class="n">in_stock_only</span><span class="p">:</span>
|
||||
<a id="__codelineno-0-34" name="__codelineno-0-34" href="#__codelineno-0-34"></a> <span class="n">filter_query</span><span class="p">[</span><span class="s2">"in_stock"</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
|
||||
<a id="__codelineno-0-35" name="__codelineno-0-35" href="#__codelineno-0-35"></a> <span class="k">return</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_many</span><span class="p">(</span><span class="nb">filter</span><span class="o">=</span><span class="n">filter_query</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-36" name="__codelineno-0-36" href="#__codelineno-0-36"></a>
|
||||
<a id="__codelineno-0-37" name="__codelineno-0-37" href="#__codelineno-0-37"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">get_low_stock</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">threshold</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">10</span><span class="p">)</span> <span class="o">-></span> <span class="nb">list</span><span class="p">[</span><span class="n">Product</span><span class="p">]:</span>
|
||||
<a id="__codelineno-0-38" name="__codelineno-0-38" href="#__codelineno-0-38"></a> <span class="k">return</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_many</span><span class="p">(</span><span class="nb">filter</span><span class="o">=</span><span class="p">{</span><span class="s2">"quantity"</span><span class="p">:</span> <span class="p">{</span><span class="s2">"$lt"</span><span class="p">:</span> <span class="n">threshold</span><span class="p">},</span> <span class="s2">"in_stock"</span><span class="p">:</span> <span class="kc">True</span><span class="p">})</span>
|
||||
<a id="__codelineno-0-39" name="__codelineno-0-39" href="#__codelineno-0-39"></a>
|
||||
<a id="__codelineno-0-40" name="__codelineno-0-40" href="#__codelineno-0-40"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">update_stock</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">product_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">quantity_delta</span><span class="p">:</span> <span class="nb">int</span><span class="p">)</span> <span class="o">-></span> <span class="n">Product</span> <span class="o">|</span> <span class="kc">None</span><span class="p">:</span>
|
||||
<a id="__codelineno-0-41" name="__codelineno-0-41" href="#__codelineno-0-41"></a><span class="w"> </span><span class="sd">"""Atomically increment/decrement stock."""</span>
|
||||
<a id="__codelineno-0-42" name="__codelineno-0-42" href="#__codelineno-0-42"></a> <span class="kn">from</span><span class="w"> </span><span class="nn">bson</span><span class="w"> </span><span class="kn">import</span> <span class="n">ObjectId</span>
|
||||
<a id="__codelineno-0-43" name="__codelineno-0-43" href="#__codelineno-0-43"></a> <span class="kn">from</span><span class="w"> </span><span class="nn">datetime</span><span class="w"> </span><span class="kn">import</span> <span class="n">datetime</span>
|
||||
<a id="__codelineno-0-44" name="__codelineno-0-44" href="#__codelineno-0-44"></a>
|
||||
<a id="__codelineno-0-45" name="__codelineno-0-45" href="#__codelineno-0-45"></a> <span class="n">result</span> <span class="o">=</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">collection</span><span class="o">.</span><span class="n">find_one_and_update</span><span class="p">(</span>
|
||||
<a id="__codelineno-0-46" name="__codelineno-0-46" href="#__codelineno-0-46"></a> <span class="p">{</span><span class="s2">"_id"</span><span class="p">:</span> <span class="n">ObjectId</span><span class="p">(</span><span class="n">product_id</span><span class="p">)},</span>
|
||||
<a id="__codelineno-0-47" name="__codelineno-0-47" href="#__codelineno-0-47"></a> <span class="p">{</span><span class="s2">"$inc"</span><span class="p">:</span> <span class="p">{</span><span class="s2">"quantity"</span><span class="p">:</span> <span class="n">quantity_delta</span><span class="p">},</span> <span class="s2">"$set"</span><span class="p">:</span> <span class="p">{</span><span class="s2">"updated_at"</span><span class="p">:</span> <span class="n">datetime</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()}},</span>
|
||||
<a id="__codelineno-0-48" name="__codelineno-0-48" href="#__codelineno-0-48"></a> <span class="n">return_document</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span>
|
||||
<a id="__codelineno-0-49" name="__codelineno-0-49" href="#__codelineno-0-49"></a> <span class="p">)</span>
|
||||
<a id="__codelineno-0-50" name="__codelineno-0-50" href="#__codelineno-0-50"></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">model</span><span class="p">(</span><span class="o">**</span><span class="n">result</span><span class="p">)</span> <span class="k">if</span> <span class="n">result</span> <span class="k">else</span> <span class="kc">None</span>
|
||||
<a id="__codelineno-0-51" name="__codelineno-0-51" href="#__codelineno-0-51"></a>
|
||||
<a id="__codelineno-0-52" name="__codelineno-0-52" href="#__codelineno-0-52"></a>
|
||||
<a id="__codelineno-0-53" name="__codelineno-0-53" href="#__codelineno-0-53"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"/products/search"</span><span class="p">,</span> <span class="n">response_model</span><span class="o">=</span><span class="n">List</span><span class="p">[</span><span class="n">Product</span><span class="p">])</span>
|
||||
<a id="__codelineno-0-54" name="__codelineno-0-54" href="#__codelineno-0-54"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">search_products</span><span class="p">(</span><span class="n">q</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="n">Query</span><span class="p">(</span><span class="o">...</span><span class="p">,</span> <span class="n">min_length</span><span class="o">=</span><span class="mi">1</span><span class="p">)):</span>
|
||||
<a id="__codelineno-0-55" name="__codelineno-0-55" href="#__codelineno-0-55"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">product_repo</span><span class="o">.</span><span class="n">search_by_name</span><span class="p">(</span><span class="n">q</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-53" name="__codelineno-0-53" href="#__codelineno-0-53"></a><span class="n">app</span> <span class="o">=</span> <span class="n">FastAPI</span><span class="p">()</span>
|
||||
<a id="__codelineno-0-54" name="__codelineno-0-54" href="#__codelineno-0-54"></a><span class="n">product_repo</span> <span class="o">=</span> <span class="n">ProductRepository</span><span class="p">()</span>
|
||||
<a id="__codelineno-0-55" name="__codelineno-0-55" href="#__codelineno-0-55"></a>
|
||||
<a id="__codelineno-0-56" name="__codelineno-0-56" href="#__codelineno-0-56"></a>
|
||||
<a id="__codelineno-0-57" name="__codelineno-0-57" href="#__codelineno-0-57"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"/products/category/</span><span class="si">{category}</span><span class="s2">"</span><span class="p">,</span> <span class="n">response_model</span><span class="o">=</span><span class="n">List</span><span class="p">[</span><span class="n">Product</span><span class="p">])</span>
|
||||
<a id="__codelineno-0-58" name="__codelineno-0-58" href="#__codelineno-0-58"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">products_by_category</span><span class="p">(</span><span class="n">category</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">in_stock</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span>
|
||||
<a id="__codelineno-0-59" name="__codelineno-0-59" href="#__codelineno-0-59"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">product_repo</span><span class="o">.</span><span class="n">get_by_category</span><span class="p">(</span><span class="n">category</span><span class="p">,</span> <span class="n">in_stock</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-57" name="__codelineno-0-57" href="#__codelineno-0-57"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"/products/search"</span><span class="p">,</span> <span class="n">response_model</span><span class="o">=</span><span class="nb">list</span><span class="p">[</span><span class="n">Product</span><span class="p">])</span>
|
||||
<a id="__codelineno-0-58" name="__codelineno-0-58" href="#__codelineno-0-58"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">search_products</span><span class="p">(</span><span class="n">q</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="n">Query</span><span class="p">(</span><span class="o">...</span><span class="p">,</span> <span class="n">min_length</span><span class="o">=</span><span class="mi">1</span><span class="p">)):</span>
|
||||
<a id="__codelineno-0-59" name="__codelineno-0-59" href="#__codelineno-0-59"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">product_repo</span><span class="o">.</span><span class="n">search_by_name</span><span class="p">(</span><span class="n">q</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-60" name="__codelineno-0-60" href="#__codelineno-0-60"></a>
|
||||
<a id="__codelineno-0-61" name="__codelineno-0-61" href="#__codelineno-0-61"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"/products/low-stock"</span><span class="p">,</span> <span class="n">response_model</span><span class="o">=</span><span class="n">List</span><span class="p">[</span><span class="n">Product</span><span class="p">])</span>
|
||||
<a id="__codelineno-0-62" name="__codelineno-0-62" href="#__codelineno-0-62"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">low_stock_products</span><span class="p">(</span><span class="n">threshold</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">10</span><span class="p">):</span>
|
||||
<a id="__codelineno-0-63" name="__codelineno-0-63" href="#__codelineno-0-63"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">product_repo</span><span class="o">.</span><span class="n">get_low_stock</span><span class="p">(</span><span class="n">threshold</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-64" name="__codelineno-0-64" href="#__codelineno-0-64"></a>
|
||||
<a id="__codelineno-0-65" name="__codelineno-0-65" href="#__codelineno-0-65"></a><span class="nd">@app</span><span class="o">.</span><span class="n">patch</span><span class="p">(</span><span class="s2">"/products/</span><span class="si">{product_id}</span><span class="s2">/stock"</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-66" name="__codelineno-0-66" href="#__codelineno-0-66"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">update_product_stock</span><span class="p">(</span><span class="n">product_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">quantity_delta</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span>
|
||||
<a id="__codelineno-0-67" name="__codelineno-0-67" href="#__codelineno-0-67"></a> <span class="n">product</span> <span class="o">=</span> <span class="k">await</span> <span class="n">product_repo</span><span class="o">.</span><span class="n">update_stock</span><span class="p">(</span><span class="n">product_id</span><span class="p">,</span> <span class="n">quantity_delta</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-68" name="__codelineno-0-68" href="#__codelineno-0-68"></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">product</span><span class="p">:</span>
|
||||
<a id="__codelineno-0-69" name="__codelineno-0-69" href="#__codelineno-0-69"></a> <span class="k">raise</span> <span class="n">HTTPException</span><span class="p">(</span><span class="n">status_code</span><span class="o">=</span><span class="mi">404</span><span class="p">,</span> <span class="n">detail</span><span class="o">=</span><span class="s2">"Product not found"</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-70" name="__codelineno-0-70" href="#__codelineno-0-70"></a> <span class="k">return</span> <span class="n">product</span>
|
||||
<a id="__codelineno-0-61" name="__codelineno-0-61" href="#__codelineno-0-61"></a>
|
||||
<a id="__codelineno-0-62" name="__codelineno-0-62" href="#__codelineno-0-62"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"/products/category/</span><span class="si">{category}</span><span class="s2">"</span><span class="p">,</span> <span class="n">response_model</span><span class="o">=</span><span class="nb">list</span><span class="p">[</span><span class="n">Product</span><span class="p">])</span>
|
||||
<a id="__codelineno-0-63" name="__codelineno-0-63" href="#__codelineno-0-63"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">products_by_category</span><span class="p">(</span><span class="n">category</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">in_stock</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span>
|
||||
<a id="__codelineno-0-64" name="__codelineno-0-64" href="#__codelineno-0-64"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">product_repo</span><span class="o">.</span><span class="n">get_by_category</span><span class="p">(</span><span class="n">category</span><span class="p">,</span> <span class="n">in_stock</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-65" name="__codelineno-0-65" href="#__codelineno-0-65"></a>
|
||||
<a id="__codelineno-0-66" name="__codelineno-0-66" href="#__codelineno-0-66"></a>
|
||||
<a id="__codelineno-0-67" name="__codelineno-0-67" href="#__codelineno-0-67"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"/products/low-stock"</span><span class="p">,</span> <span class="n">response_model</span><span class="o">=</span><span class="nb">list</span><span class="p">[</span><span class="n">Product</span><span class="p">])</span>
|
||||
<a id="__codelineno-0-68" name="__codelineno-0-68" href="#__codelineno-0-68"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">low_stock_products</span><span class="p">(</span><span class="n">threshold</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">10</span><span class="p">):</span>
|
||||
<a id="__codelineno-0-69" name="__codelineno-0-69" href="#__codelineno-0-69"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">product_repo</span><span class="o">.</span><span class="n">get_low_stock</span><span class="p">(</span><span class="n">threshold</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-70" name="__codelineno-0-70" href="#__codelineno-0-70"></a>
|
||||
<a id="__codelineno-0-71" name="__codelineno-0-71" href="#__codelineno-0-71"></a>
|
||||
<a id="__codelineno-0-72" name="__codelineno-0-72" href="#__codelineno-0-72"></a><span class="nd">@app</span><span class="o">.</span><span class="n">patch</span><span class="p">(</span><span class="s2">"/products/</span><span class="si">{product_id}</span><span class="s2">/stock"</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-73" name="__codelineno-0-73" href="#__codelineno-0-73"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">update_product_stock</span><span class="p">(</span><span class="n">product_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">quantity_delta</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span>
|
||||
<a id="__codelineno-0-74" name="__codelineno-0-74" href="#__codelineno-0-74"></a> <span class="n">product</span> <span class="o">=</span> <span class="k">await</span> <span class="n">product_repo</span><span class="o">.</span><span class="n">update_stock</span><span class="p">(</span><span class="n">product_id</span><span class="p">,</span> <span class="n">quantity_delta</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-75" name="__codelineno-0-75" href="#__codelineno-0-75"></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">product</span><span class="p">:</span>
|
||||
<a id="__codelineno-0-76" name="__codelineno-0-76" href="#__codelineno-0-76"></a> <span class="k">raise</span> <span class="n">HTTPException</span><span class="p">(</span><span class="n">status_code</span><span class="o">=</span><span class="mi">404</span><span class="p">,</span> <span class="n">detail</span><span class="o">=</span><span class="s2">"Product not found"</span><span class="p">)</span>
|
||||
<a id="__codelineno-0-77" name="__codelineno-0-77" href="#__codelineno-0-77"></a> <span class="k">return</span> <span class="n">product</span>
|
||||
</code></pre></div>
|
||||
<blockquote>
|
||||
<p><strong>Note:</strong> this snippet omits the FastAPI <code>lifespan</code> connection wiring for brevity — copy it from <a href="../01_basic_crud/">use case 01</a> so <code>ProductRepository()</code> is created only after <code>MongoConnectionManager.connect()</code>.</p>
|
||||
</blockquote>
|
||||
<hr />
|
||||
<h2 id="tips">💡 Tips</h2>
|
||||
<ul>
|
||||
<li>Methods that hit <code>self.collection</code> directly (regex search, <code>$inc</code>) <strong>bypass</strong> the caching and population layers. If a feature composes them — extend <code>CachedBaseRepository</code> or <code>PopulatingRepository</code> instead and add the domain methods there.</li>
|
||||
<li>Prefer <code>get_many(filter=...)</code> over raw <code>find</code> when you want pagination/sort defaults for free.</li>
|
||||
<li>Reuse <code>self.model(**doc)</code> to convert raw dicts to model instances consistently.</li>
|
||||
</ul>
|
||||
<hr />
|
||||
<h2 id="related">Related</h2>
|
||||
<ul>
|
||||
<li><a href="../01_basic_crud/">01 – Basic CRUD</a> · <a href="../04_pagination/">04 – Pagination</a> · <a href="../05_soft_deletes/">05 – Soft deletes</a></li>
|
||||
</ul>
|
||||
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user