CODEWITHSUNDEEP
djangodjango-modelsdjango-forms
David542
David542

Reputation: 110502

Displaying a specific field in a django form

I have the following field in a django form:

position = forms.ModelChoiceField(Position.objects.order_by('-ordering'),
                                    empty_label='Select Position',)

In my Position model, I am using the unicode field to display the field called "position". However, in this particular form, I want the output to be a different field in the model called "position-select". How would I do this without altering the default output of the unicode field?

Thank you.

Upvotes: 1

Views: 1384

Answers (3)

Lucas B
Lucas B

Reputation: 2538

In one line inside the init method of your Form :

self.fields['position'].label_from_instance = lambda obj: f"{obj.position_select}"

Upvotes: 0

David542
David542

Reputation: 110502

This is what worked:

class PositionSelect(forms.ModelChoiceField):
    def label_from_instance(self, obj):
        return obj.select_display

class Position(forms.Form):
    position = PositionSelect(Position.objects.order_by('-ordering'),
                                    empty_label='Select Position',)

Upvotes: 3

imm
imm

Reputation: 5919

Try "subclassing ModelChoiceField and override label_from_instance", per the example at https://docs.djangoproject.com/en/dev/ref/forms/fields/#modelchoicefield. You could specify a reference to the __unicode__ function of your other field within that overridden class.

Upvotes: 1

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