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POModelChoiceField , removing the blank choice
 

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    <p>I want to get rid of the "-------------" choice Django adds in a select input representing a Foreign Key on a ModelForm</p> <p>It's <a href="https://stackoverflow.com/questions/1868211/django-modelchoicefield-remove-default-choice">been answered</a> that you can use the <code>empty_label=none</code> option, but I have a ModelForm, not a regular form and overriding the field is not allowed. </p> <p>I know that I can override the <code>__init__()</code> method of the ModelForm in order to modify a ModelChoiceField's queryset using </p> <pre><code>self.fields['my_foreign_key'].queryset = .... </code></pre> <p>But this would be really ugly, as this happens over +10 foreign_keys on the "Main" model, and there's more than a Modelform based on this model</p> <p>The whole context : </p> <ul> <li>each one of these foreign_key points to the same kind of models : they are particular lists of choices, many models to ease their modification via the admin.</li> <li>all these models are related to the Main model via a "to_field=code" relation, based on a Charfield which contains a three-letter code (hey, not my fault, I had to use a legacy MS Access DB), this CharField has the <code>blank=True, unique=True</code> options, so I could, for each list, create a <code>"---No information yet---"</code> record which has, you bet, a blank value instead of a three letter code...</li> </ul> <p>The situation is now : I get a select input field with two "blank value" choices : the django one and mine, one after the other. I just miss a 'empty_label=none` option here too...</p>
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    1. USDominique Guardiola
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    1. COI think you can redefine/overwrite the field. I do this to change a DateTime model field into a forms TimeField (and add an extra field of DateField). Then I override the clean() method of the form to combine the date and time fields.
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      1. USMatthew Schinckel
 

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