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docs: collect refreshed mongo-ops wiki site (API-correct overhaul, v0.1.5)

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Vishesh 'ironeagle' Bangotra
2026-09-14 13:46:11 +05:30
parent bbd9863d23
commit f406aa2f21
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mongo-ops/03_use_cases/04_pagination/index.html
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@@ -457,7 +457,7 @@
<span class="md-ellipsis">
02 components
Core Components
</span>
@@ -598,6 +598,8 @@
<input class="md-nav__toggle md-toggle" type="checkbox" id="__toc">
<label class="md-nav__link md-nav__link--active" for="__toc">
@@ -630,6 +632,8 @@
<label class="md-nav__title" for="__toc">
<span class="md-nav__icon md-icon"></span>
@@ -638,9 +642,36 @@
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
<li class="md-nav__item">
<a href="#use-case-4-pagination-filtering" class="md-nav__link">
<a href="#whats-new" class="md-nav__link">
<span class="md-ellipsis">
Use Case 4: Pagination &amp; Filtering
📦 What's New?
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#example" class="md-nav__link">
<span class="md-ellipsis">
🚀 Example
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#tips" class="md-nav__link">
<span class="md-ellipsis">
💡 Tips
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#related" class="md-nav__link">
<span class="md-ellipsis">
Related
</span>
</a>
@@ -1004,107 +1035,147 @@
<h1>Pagination</h1>
<h3 id="use-case-4-pagination-filtering">Use Case 4: Pagination &amp; Filtering</h3>
<p><strong>Scenario:</strong> Blog post API with pagination and filtering.</p>
<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>
<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">pydantic</span><span class="w"> </span><span class="kn">import</span> <span class="n">BaseModel</span><span class="p">,</span> <span class="n">Field</span>
<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">typing</span><span class="w"> </span><span class="kn">import</span> <span class="n">List</span><span class="p">,</span> <span class="n">Optional</span><span class="p">,</span> <span class="n">Generic</span><span class="p">,</span> <span class="n">TypeVar</span>
<a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a>
<a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="n">T</span> <span class="o">=</span> <span class="n">TypeVar</span><span class="p">(</span><span class="s2">&quot;T&quot;</span><span class="p">)</span>
<h1 id="use-case-4-pagination-filtering">Use Case 4: Pagination &amp; Filtering</h1>
<p><strong>Scenario:</strong> A blog post API lists posts with page metadata, filtering, and sorting.</p>
<hr />
<h2 id="whats-new">📦 What's New?</h2>
<table>
<thead>
<tr>
<th>Component</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>BaseRepository.get_many</code></td>
<td><code>filter</code>, <code>skip</code>, <code>limit</code>, <code>sort</code> in one call.</td>
</tr>
<tr>
<td><code>BaseRepository.count</code></td>
<td>Total matching documents for page metadata.</td>
</tr>
<tr>
<td><code>PaginatedResponse</code></td>
<td>Reusable generic response wrapper.</td>
</tr>
</tbody>
</table>
<hr />
<h2 id="example">🚀 Example</h2>
<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">typing</span><span class="w"> </span><span class="kn">import</span> <span class="n">Generic</span><span class="p">,</span> <span class="n">TypeVar</span>
<a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a>
<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">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>
<a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></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">BaseModel</span>
<a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></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>
<a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a>
<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">PaginatedResponse</span><span class="p">(</span><span class="n">BaseModel</span><span class="p">,</span> <span class="n">Generic</span><span class="p">[</span><span class="n">T</span><span class="p">]):</span>
<a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a> <span class="n">items</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">T</span><span class="p">]</span>
<a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a> <span class="n">total</span><span class="p">:</span> <span class="nb">int</span>
<a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a> <span class="n">page</span><span class="p">:</span> <span class="nb">int</span>
<a id="__codelineno-0-11" name="__codelineno-0-11" href="#__codelineno-0-11"></a> <span class="n">page_size</span><span class="p">:</span> <span class="nb">int</span>
<a id="__codelineno-0-12" name="__codelineno-0-12" href="#__codelineno-0-12"></a> <span class="n">total_pages</span><span class="p">:</span> <span class="nb">int</span>
<a id="__codelineno-0-13" name="__codelineno-0-13" href="#__codelineno-0-13"></a> <span class="n">has_next</span><span class="p">:</span> <span class="nb">bool</span>
<a id="__codelineno-0-14" name="__codelineno-0-14" href="#__codelineno-0-14"></a> <span class="n">has_prev</span><span class="p">:</span> <span class="nb">bool</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><span class="k">class</span><span class="w"> </span><span class="nc">BlogPost</span><span class="p">(</span><span class="n">BaseDocument</span><span class="p">):</span>
<a id="__codelineno-0-17" name="__codelineno-0-17" href="#__codelineno-0-17"></a> <span class="n">title</span><span class="p">:</span> <span class="nb">str</span>
<a id="__codelineno-0-18" name="__codelineno-0-18" href="#__codelineno-0-18"></a> <span class="n">content</span><span class="p">:</span> <span class="nb">str</span>
<a id="__codelineno-0-19" name="__codelineno-0-19" href="#__codelineno-0-19"></a> <span class="n">author_id</span><span class="p">:</span> <span class="nb">str</span>
<a id="__codelineno-0-20" name="__codelineno-0-20" href="#__codelineno-0-20"></a> <span class="n">published</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span>
<a id="__codelineno-0-21" name="__codelineno-0-21" href="#__codelineno-0-21"></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>
<a id="__codelineno-0-22" name="__codelineno-0-22" href="#__codelineno-0-22"></a> <span class="n">views</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</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">class</span><span class="w"> </span><span class="nc">BlogPostRepository</span><span class="p">(</span><span class="n">BaseRepository</span><span class="p">[</span><span class="n">BlogPost</span><span class="p">]):</span>
<a id="__codelineno-0-25" name="__codelineno-0-25" href="#__codelineno-0-25"></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-0-26" name="__codelineno-0-26" href="#__codelineno-0-26"></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">&quot;blog_posts&quot;</span><span class="p">,</span> <span class="n">BlogPost</span><span class="p">)</span>
<a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a><span class="n">T</span> <span class="o">=</span> <span class="n">TypeVar</span><span class="p">(</span><span class="s2">&quot;T&quot;</span><span class="p">)</span>
<a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a>
<a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a>
<a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a><span class="k">class</span><span class="w"> </span><span class="nc">PaginatedResponse</span><span class="p">(</span><span class="n">BaseModel</span><span class="p">,</span> <span class="n">Generic</span><span class="p">[</span><span class="n">T</span><span class="p">]):</span>
<a id="__codelineno-0-11" name="__codelineno-0-11" href="#__codelineno-0-11"></a> <span class="n">items</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="n">T</span><span class="p">]</span>
<a id="__codelineno-0-12" name="__codelineno-0-12" href="#__codelineno-0-12"></a> <span class="n">total</span><span class="p">:</span> <span class="nb">int</span>
<a id="__codelineno-0-13" name="__codelineno-0-13" href="#__codelineno-0-13"></a> <span class="n">page</span><span class="p">:</span> <span class="nb">int</span>
<a id="__codelineno-0-14" name="__codelineno-0-14" href="#__codelineno-0-14"></a> <span class="n">page_size</span><span class="p">:</span> <span class="nb">int</span>
<a id="__codelineno-0-15" name="__codelineno-0-15" href="#__codelineno-0-15"></a> <span class="n">total_pages</span><span class="p">:</span> <span class="nb">int</span>
<a id="__codelineno-0-16" name="__codelineno-0-16" href="#__codelineno-0-16"></a> <span class="n">has_next</span><span class="p">:</span> <span class="nb">bool</span>
<a id="__codelineno-0-17" name="__codelineno-0-17" href="#__codelineno-0-17"></a> <span class="n">has_prev</span><span class="p">:</span> <span class="nb">bool</span>
<a id="__codelineno-0-18" name="__codelineno-0-18" href="#__codelineno-0-18"></a>
<a id="__codelineno-0-19" name="__codelineno-0-19" href="#__codelineno-0-19"></a>
<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">BlogPost</span><span class="p">(</span><span class="n">BaseDocument</span><span class="p">):</span>
<a id="__codelineno-0-21" name="__codelineno-0-21" href="#__codelineno-0-21"></a> <span class="n">title</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span>
<a id="__codelineno-0-22" name="__codelineno-0-22" href="#__codelineno-0-22"></a> <span class="n">content</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span>
<a id="__codelineno-0-23" name="__codelineno-0-23" href="#__codelineno-0-23"></a> <span class="n">author_id</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span>
<a id="__codelineno-0-24" name="__codelineno-0-24" href="#__codelineno-0-24"></a> <span class="n">published</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span>
<a id="__codelineno-0-25" name="__codelineno-0-25" href="#__codelineno-0-25"></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-0-26" name="__codelineno-0-26" href="#__codelineno-0-26"></a> <span class="n">views</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</span>
<a id="__codelineno-0-27" name="__codelineno-0-27" href="#__codelineno-0-27"></a>
<a id="__codelineno-0-28" name="__codelineno-0-28" href="#__codelineno-0-28"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">paginate</span><span class="p">(</span>
<a id="__codelineno-0-29" name="__codelineno-0-29" href="#__codelineno-0-29"></a> <span class="bp">self</span><span class="p">,</span>
<a id="__codelineno-0-30" name="__codelineno-0-30" href="#__codelineno-0-30"></a> <span class="n">page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span>
<a id="__codelineno-0-31" name="__codelineno-0-31" href="#__codelineno-0-31"></a> <span class="n">page_size</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-0-32" name="__codelineno-0-32" href="#__codelineno-0-32"></a> <span class="n">filter_dict</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">dict</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
<a id="__codelineno-0-33" name="__codelineno-0-33" href="#__codelineno-0-33"></a> <span class="n">sort_by</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">&quot;created_at&quot;</span><span class="p">,</span>
<a id="__codelineno-0-34" name="__codelineno-0-34" href="#__codelineno-0-34"></a> <span class="n">sort_order</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="o">-</span><span class="mi">1</span>
<a id="__codelineno-0-35" name="__codelineno-0-35" href="#__codelineno-0-35"></a> <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">PaginatedResponse</span><span class="p">[</span><span class="n">BlogPost</span><span class="p">]:</span>
<a id="__codelineno-0-36" name="__codelineno-0-36" href="#__codelineno-0-36"></a><span class="w"> </span><span class="sd">&quot;&quot;&quot;Get paginated blog posts&quot;&quot;&quot;</span>
<a id="__codelineno-0-37" name="__codelineno-0-37" href="#__codelineno-0-37"></a> <span class="n">filter_dict</span> <span class="o">=</span> <span class="n">filter_dict</span> <span class="ow">or</span> <span class="p">{}</span>
<a id="__codelineno-0-38" name="__codelineno-0-38" href="#__codelineno-0-38"></a> <span class="n">skip</span> <span class="o">=</span> <span class="p">(</span><span class="n">page</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="o">*</span> <span class="n">page_size</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="c1"># Get total count</span>
<a id="__codelineno-0-41" name="__codelineno-0-41" href="#__codelineno-0-41"></a> <span class="n">total</span> <span class="o">=</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">count</span><span class="p">(</span><span class="n">filter_dict</span><span class="p">)</span>
<a id="__codelineno-0-42" name="__codelineno-0-42" href="#__codelineno-0-42"></a>
<a id="__codelineno-0-43" name="__codelineno-0-43" href="#__codelineno-0-43"></a> <span class="c1"># Get items</span>
<a id="__codelineno-0-28" name="__codelineno-0-28" href="#__codelineno-0-28"></a>
<a id="__codelineno-0-29" name="__codelineno-0-29" href="#__codelineno-0-29"></a><span class="k">class</span><span class="w"> </span><span class="nc">BlogPostRepository</span><span class="p">(</span><span class="n">BaseRepository</span><span class="p">[</span><span class="n">BlogPost</span><span class="p">]):</span>
<a id="__codelineno-0-30" name="__codelineno-0-30" href="#__codelineno-0-30"></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-0-31" name="__codelineno-0-31" href="#__codelineno-0-31"></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">&quot;blog_posts&quot;</span><span class="p">,</span> <span class="n">BlogPost</span><span class="p">)</span>
<a id="__codelineno-0-32" name="__codelineno-0-32" href="#__codelineno-0-32"></a>
<a id="__codelineno-0-33" name="__codelineno-0-33" href="#__codelineno-0-33"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">paginate</span><span class="p">(</span>
<a id="__codelineno-0-34" name="__codelineno-0-34" href="#__codelineno-0-34"></a> <span class="bp">self</span><span class="p">,</span>
<a id="__codelineno-0-35" name="__codelineno-0-35" href="#__codelineno-0-35"></a> <span class="n">page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span>
<a id="__codelineno-0-36" name="__codelineno-0-36" href="#__codelineno-0-36"></a> <span class="n">page_size</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-0-37" name="__codelineno-0-37" href="#__codelineno-0-37"></a> <span class="n">filter_dict</span><span class="p">:</span> <span class="nb">dict</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
<a id="__codelineno-0-38" name="__codelineno-0-38" href="#__codelineno-0-38"></a> <span class="n">sort_by</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">&quot;created_at&quot;</span><span class="p">,</span>
<a id="__codelineno-0-39" name="__codelineno-0-39" href="#__codelineno-0-39"></a> <span class="n">sort_order</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="o">-</span><span class="mi">1</span><span class="p">,</span>
<a id="__codelineno-0-40" name="__codelineno-0-40" href="#__codelineno-0-40"></a> <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">PaginatedResponse</span><span class="p">[</span><span class="n">BlogPost</span><span class="p">]:</span>
<a id="__codelineno-0-41" name="__codelineno-0-41" href="#__codelineno-0-41"></a> <span class="n">filter_dict</span> <span class="o">=</span> <span class="n">filter_dict</span> <span class="ow">or</span> <span class="p">{}</span>
<a id="__codelineno-0-42" name="__codelineno-0-42" href="#__codelineno-0-42"></a> <span class="n">skip</span> <span class="o">=</span> <span class="p">(</span><span class="n">page</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="o">*</span> <span class="n">page_size</span>
<a id="__codelineno-0-43" name="__codelineno-0-43" href="#__codelineno-0-43"></a> <span class="n">total</span> <span class="o">=</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">count</span><span class="p">(</span><span class="n">filter_dict</span><span class="p">)</span>
<a id="__codelineno-0-44" name="__codelineno-0-44" href="#__codelineno-0-44"></a> <span class="n">items</span> <span class="o">=</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>
<a id="__codelineno-0-45" name="__codelineno-0-45" href="#__codelineno-0-45"></a> <span class="nb">filter</span><span class="o">=</span><span class="n">filter_dict</span><span class="p">,</span>
<a id="__codelineno-0-46" name="__codelineno-0-46" href="#__codelineno-0-46"></a> <span class="n">skip</span><span class="o">=</span><span class="n">skip</span><span class="p">,</span>
<a id="__codelineno-0-47" name="__codelineno-0-47" href="#__codelineno-0-47"></a> <span class="n">limit</span><span class="o">=</span><span class="n">page_size</span><span class="p">,</span>
<a id="__codelineno-0-48" name="__codelineno-0-48" href="#__codelineno-0-48"></a> <span class="n">sort</span><span class="o">=</span><span class="p">[(</span><span class="n">sort_by</span><span class="p">,</span> <span class="n">sort_order</span><span class="p">)]</span>
<a id="__codelineno-0-48" name="__codelineno-0-48" href="#__codelineno-0-48"></a> <span class="n">sort</span><span class="o">=</span><span class="p">[(</span><span class="n">sort_by</span><span class="p">,</span> <span class="n">sort_order</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>
<a id="__codelineno-0-51" name="__codelineno-0-51" href="#__codelineno-0-51"></a> <span class="n">total_pages</span> <span class="o">=</span> <span class="p">(</span><span class="n">total</span> <span class="o">+</span> <span class="n">page_size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="o">//</span> <span class="n">page_size</span>
<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="k">return</span> <span class="n">PaginatedResponse</span><span class="p">(</span>
<a id="__codelineno-0-54" name="__codelineno-0-54" href="#__codelineno-0-54"></a> <span class="n">items</span><span class="o">=</span><span class="n">items</span><span class="p">,</span>
<a id="__codelineno-0-55" name="__codelineno-0-55" href="#__codelineno-0-55"></a> <span class="n">total</span><span class="o">=</span><span class="n">total</span><span class="p">,</span>
<a id="__codelineno-0-56" name="__codelineno-0-56" href="#__codelineno-0-56"></a> <span class="n">page</span><span class="o">=</span><span class="n">page</span><span class="p">,</span>
<a id="__codelineno-0-57" name="__codelineno-0-57" href="#__codelineno-0-57"></a> <span class="n">page_size</span><span class="o">=</span><span class="n">page_size</span><span class="p">,</span>
<a id="__codelineno-0-58" name="__codelineno-0-58" href="#__codelineno-0-58"></a> <span class="n">total_pages</span><span class="o">=</span><span class="n">total_pages</span><span class="p">,</span>
<a id="__codelineno-0-59" name="__codelineno-0-59" href="#__codelineno-0-59"></a> <span class="n">has_next</span><span class="o">=</span><span class="n">page</span> <span class="o">&lt;</span> <span class="n">total_pages</span><span class="p">,</span>
<a id="__codelineno-0-60" name="__codelineno-0-60" href="#__codelineno-0-60"></a> <span class="n">has_prev</span><span class="o">=</span><span class="n">page</span> <span class="o">&gt;</span> <span class="mi">1</span>
<a id="__codelineno-0-61" name="__codelineno-0-61" href="#__codelineno-0-61"></a> <span class="p">)</span>
<a id="__codelineno-0-62" name="__codelineno-0-62" href="#__codelineno-0-62"></a>
<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">get_by_author</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">author_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">published_only</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="w"> </span><span class="sd">&quot;&quot;&quot;Get posts by author&quot;&quot;&quot;</span>
<a id="__codelineno-0-65" name="__codelineno-0-65" href="#__codelineno-0-65"></a> <span class="n">filter_dict</span> <span class="o">=</span> <span class="p">{</span><span class="s2">&quot;author_id&quot;</span><span class="p">:</span> <span class="n">author_id</span><span class="p">}</span>
<a id="__codelineno-0-66" name="__codelineno-0-66" href="#__codelineno-0-66"></a> <span class="k">if</span> <span class="n">published_only</span><span class="p">:</span>
<a id="__codelineno-0-67" name="__codelineno-0-67" href="#__codelineno-0-67"></a> <span class="n">filter_dict</span><span class="p">[</span><span class="s2">&quot;published&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
<a id="__codelineno-0-68" name="__codelineno-0-68" href="#__codelineno-0-68"></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_dict</span><span class="p">,</span> <span class="n">sort</span><span class="o">=</span><span class="p">[(</span><span class="s2">&quot;created_at&quot;</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">)])</span>
<a id="__codelineno-0-50" name="__codelineno-0-50" href="#__codelineno-0-50"></a> <span class="n">total_pages</span> <span class="o">=</span> <span class="p">(</span><span class="n">total</span> <span class="o">+</span> <span class="n">page_size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="o">//</span> <span class="n">page_size</span>
<a id="__codelineno-0-51" name="__codelineno-0-51" href="#__codelineno-0-51"></a> <span class="k">return</span> <span class="n">PaginatedResponse</span><span class="p">(</span>
<a id="__codelineno-0-52" name="__codelineno-0-52" href="#__codelineno-0-52"></a> <span class="n">items</span><span class="o">=</span><span class="n">items</span><span class="p">,</span>
<a id="__codelineno-0-53" name="__codelineno-0-53" href="#__codelineno-0-53"></a> <span class="n">total</span><span class="o">=</span><span class="n">total</span><span class="p">,</span>
<a id="__codelineno-0-54" name="__codelineno-0-54" href="#__codelineno-0-54"></a> <span class="n">page</span><span class="o">=</span><span class="n">page</span><span class="p">,</span>
<a id="__codelineno-0-55" name="__codelineno-0-55" href="#__codelineno-0-55"></a> <span class="n">page_size</span><span class="o">=</span><span class="n">page_size</span><span class="p">,</span>
<a id="__codelineno-0-56" name="__codelineno-0-56" href="#__codelineno-0-56"></a> <span class="n">total_pages</span><span class="o">=</span><span class="n">total_pages</span><span class="p">,</span>
<a id="__codelineno-0-57" name="__codelineno-0-57" href="#__codelineno-0-57"></a> <span class="n">has_next</span><span class="o">=</span><span class="n">page</span> <span class="o">&lt;</span> <span class="n">total_pages</span><span class="p">,</span>
<a id="__codelineno-0-58" name="__codelineno-0-58" href="#__codelineno-0-58"></a> <span class="n">has_prev</span><span class="o">=</span><span class="n">page</span> <span class="o">&gt;</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="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="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">get_by_author</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">author_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">published_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">-&gt;</span> <span class="nb">list</span><span class="p">[</span><span class="n">BlogPost</span><span class="p">]:</span>
<a id="__codelineno-0-62" name="__codelineno-0-62" href="#__codelineno-0-62"></a> <span class="n">filter_dict</span> <span class="o">=</span> <span class="p">{</span><span class="s2">&quot;author_id&quot;</span><span class="p">:</span> <span class="n">author_id</span><span class="p">}</span>
<a id="__codelineno-0-63" name="__codelineno-0-63" href="#__codelineno-0-63"></a> <span class="k">if</span> <span class="n">published_only</span><span class="p">:</span>
<a id="__codelineno-0-64" name="__codelineno-0-64" href="#__codelineno-0-64"></a> <span class="n">filter_dict</span><span class="p">[</span><span class="s2">&quot;published&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
<a id="__codelineno-0-65" name="__codelineno-0-65" href="#__codelineno-0-65"></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_dict</span><span class="p">,</span> <span class="n">sort</span><span class="o">=</span><span class="p">[(</span><span class="s2">&quot;created_at&quot;</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">)])</span>
<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="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">search_by_tags</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <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">-&gt;</span> <span class="nb">list</span><span class="p">[</span><span class="n">BlogPost</span><span class="p">]:</span>
<a id="__codelineno-0-68" name="__codelineno-0-68" href="#__codelineno-0-68"></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">&quot;tags&quot;</span><span class="p">:</span> <span class="p">{</span><span class="s2">&quot;$in&quot;</span><span class="p">:</span> <span class="n">tags</span><span class="p">},</span> <span class="s2">&quot;published&quot;</span><span class="p">:</span> <span class="kc">True</span><span class="p">})</span>
<a id="__codelineno-0-69" name="__codelineno-0-69" href="#__codelineno-0-69"></a>
<a id="__codelineno-0-70" name="__codelineno-0-70" href="#__codelineno-0-70"></a> <span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">search_by_tags</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">tags</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">])</span> <span class="o">-&gt;</span> <span class="n">List</span><span class="p">[</span><span class="n">BlogPost</span><span class="p">]:</span>
<a id="__codelineno-0-71" name="__codelineno-0-71" href="#__codelineno-0-71"></a><span class="w"> </span><span class="sd">&quot;&quot;&quot;Search posts by tags&quot;&quot;&quot;</span>
<a id="__codelineno-0-72" name="__codelineno-0-72" href="#__codelineno-0-72"></a> <span class="k">return</span> <span class="k">await</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_many</span><span class="p">(</span><span class="nb">filter</span><span class="o">=</span><span class="p">{</span><span class="s2">&quot;tags&quot;</span><span class="p">:</span> <span class="p">{</span><span class="s2">&quot;$in&quot;</span><span class="p">:</span> <span class="n">tags</span><span class="p">},</span> <span class="s2">&quot;published&quot;</span><span class="p">:</span> <span class="kc">True</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><span class="n">app</span> <span class="o">=</span> <span class="n">FastAPI</span><span class="p">()</span>
<a id="__codelineno-0-72" name="__codelineno-0-72" href="#__codelineno-0-72"></a><span class="n">blog_repo</span> <span class="o">=</span> <span class="n">BlogPostRepository</span><span class="p">()</span>
<a id="__codelineno-0-73" name="__codelineno-0-73" href="#__codelineno-0-73"></a>
<a id="__codelineno-0-74" name="__codelineno-0-74" href="#__codelineno-0-74"></a><span class="c1"># Usage in FastAPI</span>
<a id="__codelineno-0-74" name="__codelineno-0-74" href="#__codelineno-0-74"></a>
<a id="__codelineno-0-75" name="__codelineno-0-75" href="#__codelineno-0-75"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;/posts/&quot;</span><span class="p">,</span> <span class="n">response_model</span><span class="o">=</span><span class="n">PaginatedResponse</span><span class="p">[</span><span class="n">BlogPost</span><span class="p">])</span>
<a id="__codelineno-0-76" name="__codelineno-0-76" href="#__codelineno-0-76"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">list_posts</span><span class="p">(</span>
<a id="__codelineno-0-77" name="__codelineno-0-77" href="#__codelineno-0-77"></a> <span class="n">page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span>
<a id="__codelineno-0-78" name="__codelineno-0-78" href="#__codelineno-0-78"></a> <span class="n">page_size</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-0-79" name="__codelineno-0-79" href="#__codelineno-0-79"></a> <span class="n">published</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">bool</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
<a id="__codelineno-0-80" name="__codelineno-0-80" href="#__codelineno-0-80"></a> <span class="n">author_id</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
<a id="__codelineno-0-79" name="__codelineno-0-79" href="#__codelineno-0-79"></a> <span class="n">published</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
<a id="__codelineno-0-80" name="__codelineno-0-80" href="#__codelineno-0-80"></a> <span class="n">author_id</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
<a id="__codelineno-0-81" name="__codelineno-0-81" href="#__codelineno-0-81"></a><span class="p">):</span>
<a id="__codelineno-0-82" name="__codelineno-0-82" href="#__codelineno-0-82"></a> <span class="n">filter_dict</span> <span class="o">=</span> <span class="p">{}</span>
<a id="__codelineno-0-83" name="__codelineno-0-83" href="#__codelineno-0-83"></a> <span class="k">if</span> <span class="n">published</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<a id="__codelineno-0-84" name="__codelineno-0-84" href="#__codelineno-0-84"></a> <span class="n">filter_dict</span><span class="p">[</span><span class="s2">&quot;published&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="n">published</span>
<a id="__codelineno-0-85" name="__codelineno-0-85" href="#__codelineno-0-85"></a> <span class="k">if</span> <span class="n">author_id</span><span class="p">:</span>
<a id="__codelineno-0-86" name="__codelineno-0-86" href="#__codelineno-0-86"></a> <span class="n">filter_dict</span><span class="p">[</span><span class="s2">&quot;author_id&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="n">author_id</span>
<a id="__codelineno-0-87" name="__codelineno-0-87" href="#__codelineno-0-87"></a>
<a id="__codelineno-0-88" name="__codelineno-0-88" href="#__codelineno-0-88"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">blog_repo</span><span class="o">.</span><span class="n">paginate</span><span class="p">(</span><span class="n">page</span><span class="p">,</span> <span class="n">page_size</span><span class="p">,</span> <span class="n">filter_dict</span><span class="p">)</span>
<a id="__codelineno-0-87" name="__codelineno-0-87" href="#__codelineno-0-87"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">blog_repo</span><span class="o">.</span><span class="n">paginate</span><span class="p">(</span><span class="n">page</span><span class="p">,</span> <span class="n">page_size</span><span class="p">,</span> <span class="n">filter_dict</span><span class="p">)</span>
<a id="__codelineno-0-88" name="__codelineno-0-88" href="#__codelineno-0-88"></a>
<a id="__codelineno-0-89" name="__codelineno-0-89" href="#__codelineno-0-89"></a>
<a id="__codelineno-0-90" name="__codelineno-0-90" href="#__codelineno-0-90"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;/posts/author/</span><span class="si">{author_id}</span><span class="s2">&quot;</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">BlogPost</span><span class="p">])</span>
<a id="__codelineno-0-90" name="__codelineno-0-90" href="#__codelineno-0-90"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;/posts/author/</span><span class="si">{author_id}</span><span class="s2">&quot;</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">BlogPost</span><span class="p">])</span>
<a id="__codelineno-0-91" name="__codelineno-0-91" href="#__codelineno-0-91"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">posts_by_author</span><span class="p">(</span><span class="n">author_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">published</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-0-92" name="__codelineno-0-92" href="#__codelineno-0-92"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">blog_repo</span><span class="o">.</span><span class="n">get_by_author</span><span class="p">(</span><span class="n">author_id</span><span class="p">,</span> <span class="n">published</span><span class="p">)</span>
<a id="__codelineno-0-93" name="__codelineno-0-93" href="#__codelineno-0-93"></a>
<a id="__codelineno-0-94" name="__codelineno-0-94" href="#__codelineno-0-94"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;/posts/tags&quot;</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">BlogPost</span><span class="p">])</span>
<a id="__codelineno-0-95" name="__codelineno-0-95" href="#__codelineno-0-95"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">posts_by_tags</span><span class="p">(</span><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="n">Query</span><span class="p">(</span><span class="o">...</span><span class="p">)):</span>
<a id="__codelineno-0-96" name="__codelineno-0-96" href="#__codelineno-0-96"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">blog_repo</span><span class="o">.</span><span class="n">search_by_tags</span><span class="p">(</span><span class="n">tags</span><span class="p">)</span>
<a id="__codelineno-0-94" name="__codelineno-0-94" href="#__codelineno-0-94"></a>
<a id="__codelineno-0-95" name="__codelineno-0-95" href="#__codelineno-0-95"></a><span class="nd">@app</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;/posts/tags&quot;</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">BlogPost</span><span class="p">])</span>
<a id="__codelineno-0-96" name="__codelineno-0-96" href="#__codelineno-0-96"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">posts_by_tags</span><span class="p">(</span><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="n">Query</span><span class="p">(</span><span class="o">...</span><span class="p">)):</span>
<a id="__codelineno-0-97" name="__codelineno-0-97" href="#__codelineno-0-97"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">blog_repo</span><span class="o">.</span><span class="n">search_by_tags</span><span class="p">(</span><span class="n">tags</span><span class="p">)</span>
</code></pre></div>
<blockquote>
<p><strong>Note:</strong> add the <code>lifespan</code> wiring from <a href="../01_basic_crud/">use case 01</a> so <code>blog_repo</code> is created after connection.</p>
</blockquote>
<hr />
<h2 id="tips">💡 Tips</h2>
<ul>
<li><code>get_many</code> calls <code>cursor.to_list(limit)</code>; pass <code>limit=0</code> to skip the limit entirely, otherwise a large explicit limit is safer than unbounded reads.</li>
<li>Always <code>count</code> first for stable metadata — it uses the same filter as the page query.</li>
<li>Combine with <code>sort=[(field, -1|1)]</code> for deterministic ordering; create matching indexes to avoid full collection scans (see <a href="../13_index_creation/">use case 13</a>).</li>
</ul>
<hr />
<h2 id="related">Related</h2>
<ul>
<li><a href="../02_custom_repo/">02 – Custom repository</a> · <a href="../13_index_creation/">13 – Indexes</a> · <a href="../05_soft_deletes/">05 – Soft deletes</a></li>
</ul>