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<div class="document" id="base-many2many-custom-field">
<h1 class="title">Base Many2many Custom Field</h1>
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<p><a class="reference external image-reference" href="https://odoo-community.org/page/development-status"><img alt="Beta" src="https://img.shields.io/badge/maturity-Beta-yellow.png" /></a> <a class="reference external image-reference" href="http://www.gnu.org/licenses/agpl-3.0-standalone.html"><img alt="License: AGPL-3" src="https://img.shields.io/badge/licence-AGPL--3-blue.png" /></a> <a class="reference external image-reference" href="https://github.com/OCA/server-tools/tree/16.0/base_m2m_custom_field"><img alt="OCA/server-tools" src="https://img.shields.io/badge/github-OCA%2Fserver--tools-lightgray.png?logo=github" /></a> <a class="reference external image-reference" href="https://translation.odoo-community.org/projects/server-tools-16-0/server-tools-16-0-base_m2m_custom_field"><img alt="Translate me on Weblate" src="https://img.shields.io/badge/weblate-Translate%20me-F47D42.png" /></a> <a class="reference external image-reference" href="https://runboat.odoo-community.org/builds?repo=OCA/server-tools&amp;target_branch=16.0"><img alt="Try me on Runboat" src="https://img.shields.io/badge/runboat-Try%20me-875A7B.png" /></a></p>
<p>This module adds a new Many2many custom field with a <cite>create_table</cite> attribute.</p>
<p><strong>Table of contents</strong></p>
<div class="contents local topic" id="contents">
<ul class="simple">
<li><a class="reference internal" href="#usage" id="toc-entry-1">Usage</a></li>
<li><a class="reference internal" href="#bug-tracker" id="toc-entry-2">Bug Tracker</a></li>
<li><a class="reference internal" href="#credits" id="toc-entry-3">Credits</a><ul>
<li><a class="reference internal" href="#authors" id="toc-entry-4">Authors</a></li>
<li><a class="reference internal" href="#contributors" id="toc-entry-5">Contributors</a></li>
<li><a class="reference internal" href="#maintainers" id="toc-entry-6">Maintainers</a></li>
</ul>
</li>
</ul>
</div>
<div class="section" id="usage">
<h1><a class="toc-backref" href="#toc-entry-1">Usage</a></h1>
<p>Many2manyCustom field is useful when a direct access to the relational table
is needed, for example to be editable in a dedicated tree view.</p>
<p>Let’s consider following models:</p>
<pre class="code python literal-block">
<span class="k">class</span> <span class="nc">MyModelA</span><span class="p">(</span><span class="n">models</span><span class="o">.</span><span class="n">Model</span><span class="p">):</span><span class="w">
</span> <span class="n">_name</span> <span class="o">=</span> <span class="s1">'my.model.a'</span><span class="w">
</span> <span class="n">my_model_b_ids</span> <span class="o">=</span> <span class="n">fields</span><span class="o">.</span><span class="n">Many2manyCustom</span><span class="p">(</span><span class="w">
</span> <span class="s1">'my.model.b'</span><span class="p">,</span><span class="w">
</span> <span class="s1">'my_model_a_b_rel'</span><span class="p">,</span><span class="w">
</span> <span class="s1">'my_model_a_id'</span><span class="p">,</span><span class="w">
</span> <span class="s1">'my_model_b_id'</span><span class="p">,</span><span class="w">
</span> <span class="n">create_table</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span><span class="w">
</span> <span class="p">)</span><span class="w">
</span><span class="k">class</span> <span class="nc">MyModelB</span><span class="p">(</span><span class="n">models</span><span class="o">.</span><span class="n">Model</span><span class="p">):</span><span class="w">
</span> <span class="n">_name</span> <span class="o">=</span> <span class="s1">'my.model.b'</span><span class="w">
</span> <span class="n">my_model_a_ids</span> <span class="o">=</span> <span class="n">fields</span><span class="o">.</span><span class="n">Many2manyCustom</span><span class="p">(</span><span class="w">
</span> <span class="s1">'my.model.a'</span><span class="p">,</span><span class="w">
</span> <span class="s1">'my_model_a_b_rel'</span><span class="p">,</span><span class="w">
</span> <span class="s1">'my_model_b_id'</span><span class="p">,</span><span class="w">
</span> <span class="s1">'my_model_a_id'</span><span class="p">,</span><span class="w">
</span> <span class="n">create_table</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span><span class="w">
</span> <span class="p">)</span><span class="w">
</span><span class="k">class</span> <span class="nc">MyModelABRel</span><span class="p">(</span><span class="n">models</span><span class="o">.</span><span class="n">Model</span><span class="p">):</span><span class="w">
</span> <span class="n">_name</span> <span class="o">=</span> <span class="s1">'my.model.a.b.rel'</span><span class="w">
</span> <span class="n">my_model_a_id</span> <span class="o">=</span> <span class="n">fields</span><span class="o">.</span><span class="n">Many2one</span><span class="p">(</span><span class="w">
</span> <span class="s1">'my.model.a'</span><span class="p">,</span><span class="w">
</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span><span class="w">
</span> <span class="n">index</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="c1"># Index is mandatory here</span><span class="w">
</span> <span class="p">)</span><span class="w">
</span> <span class="n">my_model_b_id</span> <span class="o">=</span> <span class="n">fields</span><span class="o">.</span><span class="n">Many2one</span><span class="p">(</span><span class="w">
</span> <span class="s1">'my.model.b'</span><span class="p">,</span><span class="w">
</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span><span class="w">
</span> <span class="n">index</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="c1"># Index is mandatory here</span><span class="w">
</span> <span class="p">)</span>
</pre>
<p>By setting <cite>create_table=False</cite> on the Many2manyCustom field, and using the
relational table name, as <cite>_name</cite> for the relational model, we’re able to
define a dedicated tree view for <cite>my.model.a.b.rel</cite>.</p>
<pre class="code xml literal-block">
<span class="nt">&lt;record</span><span class="w"> </span><span class="na">id=</span><span class="s">&quot;my_model_a_b_rel_tree_view&quot;</span><span class="w"> </span><span class="na">model=</span><span class="s">&quot;ir.ui.view&quot;</span><span class="nt">&gt;</span><span class="w">
</span><span class="nt">&lt;field</span><span class="w"> </span><span class="na">name=</span><span class="s">&quot;name&quot;</span><span class="nt">&gt;</span>my.model.a.b.rel.tree.view<span class="nt">&lt;/field&gt;</span><span class="w">
</span><span class="nt">&lt;field</span><span class="w"> </span><span class="na">name=</span><span class="s">&quot;model&quot;</span><span class="nt">&gt;</span>my.model.a.b.rel<span class="nt">&lt;/field&gt;</span><span class="w">
</span><span class="nt">&lt;field</span><span class="w"> </span><span class="na">name=</span><span class="s">&quot;arch&quot;</span><span class="w"> </span><span class="na">type=</span><span class="s">&quot;xml&quot;</span><span class="nt">&gt;</span><span class="w">
</span><span class="nt">&lt;tree</span><span class="w"> </span><span class="na">editable=</span><span class="s">&quot;top&quot;</span><span class="nt">&gt;</span><span class="w">
</span><span class="nt">&lt;field</span><span class="w"> </span><span class="na">name=</span><span class="s">&quot;my_model_a_id&quot;</span><span class="w"> </span><span class="nt">/&gt;</span><span class="w">
</span><span class="nt">&lt;field</span><span class="w"> </span><span class="na">name=</span><span class="s">&quot;my_model_b_id&quot;</span><span class="w"> </span><span class="nt">/&gt;</span><span class="w">
</span><span class="nt">&lt;/tree&gt;</span><span class="w">
</span><span class="nt">&lt;/field&gt;</span><span class="w">
</span><span class="nt">&lt;/record&gt;</span>
</pre>
</div>
<div class="section" id="bug-tracker">
<h1><a class="toc-backref" href="#toc-entry-2">Bug Tracker</a></h1>
<p>Bugs are tracked on <a class="reference external" href="https://github.com/OCA/server-tools/issues">GitHub Issues</a>.
In case of trouble, please check there if your issue has already been reported.
If you spotted it first, help us to smash it by providing a detailed and welcomed
<a class="reference external" href="https://github.com/OCA/server-tools/issues/new?body=module:%20base_m2m_custom_field%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**">feedback</a>.</p>
<p>Do not contact contributors directly about support or help with technical issues.</p>
</div>
<div class="section" id="credits">
<h1><a class="toc-backref" href="#toc-entry-3">Credits</a></h1>
<div class="section" id="authors">
<h2><a class="toc-backref" href="#toc-entry-4">Authors</a></h2>
<ul class="simple">
<li>Camptocamp</li>
</ul>
</div>
<div class="section" id="contributors">
<h2><a class="toc-backref" href="#toc-entry-5">Contributors</a></h2>
<ul class="simple">
<li>Akim Juillerat &lt;<a class="reference external" href="mailto:akim.juillerat&#64;camptocamp.com">akim.juillerat&#64;camptocamp.com</a>&gt;</li>
<li>Fernando La Chica &lt;<a class="reference external" href="mailto:fernandolachica&#64;gmail.com">fernandolachica&#64;gmail.com</a>&gt;</li>
<li>Denis Roussel &lt;<a class="reference external" href="mailto:denis.roussel&#64;acsone.eu">denis.roussel&#64;acsone.eu</a>&gt;</li>
</ul>
</div>
<div class="section" id="maintainers">
<h2><a class="toc-backref" href="#toc-entry-6">Maintainers</a></h2>
<p>This module is maintained by the OCA.</p>
<a class="reference external image-reference" href="https://odoo-community.org"><img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" /></a>
<p>OCA, or the Odoo Community Association, is a nonprofit organization whose
mission is to support the collaborative development of Odoo features and
promote its widespread use.</p>
<p>This module is part of the <a class="reference external" href="https://github.com/OCA/server-tools/tree/16.0/base_m2m_custom_field">OCA/server-tools</a> project on GitHub.</p>
<p>You are welcome to contribute. To learn how please visit <a class="reference external" href="https://odoo-community.org/page/Contribute">https://odoo-community.org/page/Contribute</a>.</p>
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