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  1. PO
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    <p>You're right, those docs are not very useful. It's a recent addition after all!</p> <p>My guess is that the normal usage of error_messages is for ModelForms, so I'd look here for a list of acceptable error keys per field: <a href="http://docs.djangoproject.com/en/dev/ref/forms/fields/#error-messages" rel="noreferrer">http://docs.djangoproject.com/en/dev/ref/forms/fields/#error-messages</a></p> <p><strong>But, if you want to be really safe and not assume anything...</strong></p> <p>The most reliable way for now is going to be looking at the source at <code>django/db/models/fields/__init__.py</code> where you'll see each of the <code>default_error_messages</code> that can be specified and the actual calls to <code>self.error_messages['invalid']</code></p> <pre><code># Field (base class) default_error_messages = { 'invalid_choice': _(u'Value %r is not a valid choice.'), 'null': _(u'This field cannot be null.'), 'blank': _(u'This field cannot be blank.'), } # AutoField default_error_messages = { 'invalid': _(u'This value must be an integer.'), } </code></pre> <p>Here's the doc on model validation: <a href="http://docs.djangoproject.com/en/dev/ref/models/instances/#validating-objects" rel="noreferrer">http://docs.djangoproject.com/en/dev/ref/models/instances/#validating-objects</a></p> <h1>Update:</h1> <p>Just tested this in a shell session and it appears to be working. Whats up?</p> <p>I just defined a simple model:</p> <pre><code>class SubscriptionGroup(models.Model): name = models.CharField(max_length=255, error_messages={'blank': 'INVALID!!11', 'null': 'NULL11!'}) # shell &gt;&gt;&gt; s = SubscriptionGroup() &gt;&gt;&gt; s.full_clean() ValidationError: {'name': [u'INVALID!!11']} </code></pre>
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    1. POHow do I use error_messages on models in Django
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    1. USYuji 'Tomita' Tomita
    1. USYuji 'Tomita' Tomita
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    1. COI took a peek in the source files you mentioned and came to the same conclusion. As you see in my example I pass a key 'required' in error_messages but it does not work. Maby I've done something wrong somewhere, I'll have to continue testing. Thank you!
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      1. USJoelbitar
    2. COHmm, it works for me! Care to post your code? I'm updating mine to show my shell session just now.
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      1. USYuji 'Tomita' Tomita
    3. COThat is so wierd, I'v added my code that is used in the app. For now I'm using the method that I'v tried to avoid. However, your example clearly works and is the right way to do it.
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