Changes between Version 254 and Version 255 of BackwardsIncompatibleChanges


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Timestamp:
08/27/08 03:11:40 (7 years ago)
Author:
mtredinnick
Comment:

Added note about [8618][

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  • BackwardsIncompatibleChanges

    v254 v255  
    12541254 * Removed `django.core.validators`:
    12551255   * Moved `ValidationError` exception to `django.core.exceptions`.
     1256
     1257== ModelForms made more like Forms ==
     1258
     1259This is a very subtle change that will only affect people accessing formfields as attributes on a `ModelForm`. After [8618], this is no longer possible. It has never been possible on a `Form` class and was an oversight for `ModelForm`. For most people, no change is required and templates will work exactly as they did before.
     1260
     1261The code change for those affected is
     1262{{{
     1263#!python
     1264
     1265class MyForm(forms.ModelForm):
     1266   foo = forms.CharField(...)
     1267
     1268myform = MyForm()
     1269
     1270# Bad. Don't do this.
     1271myform.foo         # Previously possible on ModelForms, but only worked by accident.
     1272
     1273# Good!
     1274myform['foo']      # Has always worked. Works for Forms and ModelForms.
     1275}}}
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