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<h1 id="ormar">Ormar<a class="headerlink" href="#ormar" title="Permanent link"></a></h1>
<p><strong>FastAPI Users</strong> provides the necessary tools to work with ormar.</p>
<h2 id="installation">Installation<a class="headerlink" href="#installation" title="Permanent link"></a></h2>
<p>Install the database driver that corresponds to your DBMS:</p>
<div class="highlight"><pre><span></span><code>pip install asyncpg psycopg2
</code></pre></div>
<div class="highlight"><pre><span></span><code>pip install aiomysql pymysql
</code></pre></div>
<div class="highlight"><pre><span></span><code>pip install aiosqlite
</code></pre></div>
<p>For the sake of this tutorial from now on, we'll use a simple SQLite database.</p>
<h2 id="setup-user-table">Setup User table<a class="headerlink" href="#setup-user-table" title="Permanent link"></a></h2>
<p>Let's declare our User ORM model.</p>
<div class="highlight"><pre><span></span><code><span class="kn">import</span> <span class="nn">databases</span>
<span class="kn">import</span> <span class="nn">sqlalchemy</span>
<span class="kn">from</span> <span class="nn">fastapi_users.db</span> <span class="kn">import</span> <span class="n">OrmarBaseUserModel</span><span class="p">,</span> <span class="n">OrmarUserDatabase</span>
<span class="kn">from</span> <span class="nn">.models</span> <span class="kn">import</span> <span class="n">UserDB</span>
<span class="n">DATABASE_URL</span> <span class="o">=</span> <span class="s2">"sqlite:///test.db"</span>
<span class="n">metadata</span> <span class="o">=</span> <span class="n">sqlalchemy</span><span class="o">.</span><span class="n">MetaData</span><span class="p">()</span>
<span class="n">database</span> <span class="o">=</span> <span class="n">databases</span><span class="o">.</span><span class="n">Database</span><span class="p">(</span><span class="n">DATABASE_URL</span><span class="p">)</span>
<span class="hll"><span class="k">class</span> <span class="nc">UserModel</span><span class="p">(</span><span class="n">OrmarBaseUserModel</span><span class="p">):</span>
</span><span class="hll"> <span class="k">class</span> <span class="nc">Meta</span><span class="p">:</span>
</span><span class="hll"> <span class="n">tablename</span> <span class="o">=</span> <span class="s2">"users"</span>
</span><span class="hll"> <span class="n">metadata</span> <span class="o">=</span> <span class="n">metadata</span>
</span><span class="hll"> <span class="n">database</span> <span class="o">=</span> <span class="n">database</span>
</span>
<span class="n">engine</span> <span class="o">=</span> <span class="n">sqlalchemy</span><span class="o">.</span><span class="n">create_engine</span><span class="p">(</span><span class="n">DATABASE_URL</span><span class="p">)</span>
<span class="n">metadata</span><span class="o">.</span><span class="n">create_all</span><span class="p">(</span><span class="n">engine</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">get_user_db</span><span class="p">():</span>
<span class="k">yield</span> <span class="n">OrmarUserDatabase</span><span class="p">(</span><span class="n">UserDB</span><span class="p">,</span> <span class="n">UserModel</span><span class="p">)</span>
</code></pre></div>
<p>As you can see, <strong>FastAPI Users</strong> provides an abstract model that will
include base fields for our User table. You can of course add you own fields
there to fit to your needs!</p>
<h2 id="create-the-database-adapter">Create the database adapter<a class="headerlink" href="#create-the-database-adapter" title="Permanent link"></a></h2>
<p>The database adapter of <strong>FastAPI Users</strong> makes the link between your
database configuration and the users logic. It should be generated by a FastAPI dependency.</p>
<div class="highlight"><pre><span></span><code><span class="kn">import</span> <span class="nn">databases</span>
<span class="kn">import</span> <span class="nn">sqlalchemy</span>
<span class="kn">from</span> <span class="nn">fastapi_users.db</span> <span class="kn">import</span> <span class="n">OrmarBaseUserModel</span><span class="p">,</span> <span class="n">OrmarUserDatabase</span>
<span class="kn">from</span> <span class="nn">.models</span> <span class="kn">import</span> <span class="n">UserDB</span>
<span class="n">DATABASE_URL</span> <span class="o">=</span> <span class="s2">"sqlite:///test.db"</span>
<span class="n">metadata</span> <span class="o">=</span> <span class="n">sqlalchemy</span><span class="o">.</span><span class="n">MetaData</span><span class="p">()</span>
<span class="n">database</span> <span class="o">=</span> <span class="n">databases</span><span class="o">.</span><span class="n">Database</span><span class="p">(</span><span class="n">DATABASE_URL</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">UserModel</span><span class="p">(</span><span class="n">OrmarBaseUserModel</span><span class="p">):</span>
<span class="k">class</span> <span class="nc">Meta</span><span class="p">:</span>
<span class="n">tablename</span> <span class="o">=</span> <span class="s2">"users"</span>
<span class="n">metadata</span> <span class="o">=</span> <span class="n">metadata</span>
<span class="n">database</span> <span class="o">=</span> <span class="n">database</span>
<span class="n">engine</span> <span class="o">=</span> <span class="n">sqlalchemy</span><span class="o">.</span><span class="n">create_engine</span><span class="p">(</span><span class="n">DATABASE_URL</span><span class="p">)</span>
<span class="n">metadata</span><span class="o">.</span><span class="n">create_all</span><span class="p">(</span><span class="n">engine</span><span class="p">)</span>
<span class="hll"><span class="k">def</span> <span class="nf">get_user_db</span><span class="p">():</span>
</span><span class="hll"> <span class="k">yield</span> <span class="n">OrmarUserDatabase</span><span class="p">(</span><span class="n">UserDB</span><span class="p">,</span> <span class="n">UserModel</span><span class="p">)</span>
</span></code></pre></div>
<p>Notice that we pass a reference to your <a href="../model.md"><code>UserDB</code> model</a>.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>In production, it's strongly recommended to setup a migration system to
update your SQL schemas. See
<a href="https://alembic.sqlalchemy.org/en/latest/">Alembic</a>.</p>
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