How to translate dynamic form choices

Question

I am using the same form and changing the choices.

All of the choices have a translation.

Do I need to specify something in the form?

forms.py

class QuestionForm(forms.Form):
    selection = forms.ChoiceField(widget=forms.RadioSelect())

views.py

from django.utils.translation import ugettext as _
form = QuestionForm(request.POST)
choices = [(_(i.choice), i.choice) for i in question.choices.all()]
form.fields['selection'].choices = choices

template

<form method="post">{% csrf_token %}
    {{ form.selection }}
    <input type="submit" value="Submit" class="btn"/>
</form>

I tried

{% trans form.selection %}

but got the error"

'BoundField' object has no attribute 'replace'

Answer 1

(_(i.choice), i.choice) is in the wrong order, you won't see a translation. It's the second item that gets displayed, so you want to have: (i.choice, _(i.choice)).

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Also, if you want a dynamic form, you should be creating a dynamic form using a form factory.

Do not play with the form internals after you've created it.

Somewhere in your code:

def make_question_form_class(question):
     choices = [(_(i.choice), i.choice) for i in question.choices.all()]

     class _QuestionForm(forms.Form):
         selection = forms.ChoiceField(choices = choices, widget=forms.RadioSelect())

     return _QuestionForm

In your view:

form_class = make_question_form_class(question)
form = form_class(request.POST)

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See this post by James Bennett himself for more possibilities!