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<h1>OpenERP Objects<a class="headerlink" href="#openerp-objects" title="Permalink to this headline">¶</a></h1>
<div class="section" id="introduction">
<h2>Introduction<a class="headerlink" href="#introduction" title="Permalink to this headline">¶</a></h2>
<p>All the ERP’s pieces of data are accessible through “objects”. As an example, there is a res.partner object to access the data concerning the partners, an account.invoice object for the data concerning the invoices, etc...</p>
<p>Please note that there is an object for every type of resource, and not an object per resource. We have thus a res.partner object to manage all the partners and not a @@res.partner@@ object per partner. If we talk in “object oriented” terms, we could also say that there is an object per level.</p>
<p>The direct consequences is that all the methods of objects have a common parameter: the “ids” parameter. This specifies on which resources (for example, on which partner) the method must be applied. Precisely, this parameter contains a list of resource ids on which the method must be applied.</p>
<p>For example, if we have two partners with the identifiers 1 and 5, and we want to call the res_partner method “send_email”, we will write something like:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="n">res_partner</span><span class="o">.</span><span class="n">send_email</span><span class="p">(</span><span class="o">...</span> <span class="p">,</span> <span class="p">[</span><span class="mf">1</span><span class="p">,</span> <span class="mf">5</span><span class="p">],</span> <span class="o">...</span><span class="p">)</span>
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<p>We will see the exact syntax of object method calls further in this document.</p>
<p>In the following section, we will see how to define a new object. Then, we will check out the different methods of doing this.</p>
<p>For developers:</p>
<ul class="simple">
<li>Open ERP “objects” are usually called classes in object oriented programming.</li>
<li>A Open ERP “resource” is usually called an object in OO programming, instance of a class.</li>
</ul>
<p>It’s a bit confusing when you try to program inside Open ERP, because the language used is Python, and Python is a fully object oriented language, and has objects and instances ...</p>
<p>Luckily, an Open ERP “resource” can be converted magically into a nice Python object using the “browse” class method (Open ERP object method).</p>
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