[ACCEPTED]-How to set choices in dynamic with Django choicefield?-django

Accepted answer

Score: 24

I often set the choices dynamicly in the 1 constructor:

class MyForm(BaseForm):
    afield = forms.ChoiceField(choices=INITIAL_CHOICES)

    def __init__(self, *args, **kwargs):
        super(MyForm, self).__init__(*args, **kwargs)
        self.fields['afield'].choices = my_computed_choices

Score: 3

The key is to realise that choices can be any iterable:

import uuid
from itertools import count
class MyForm(BaseForm):

    counter = count(1)

    @staticmethod
    def my_choices():
        yield (uuid.uuid1, next(counter)) 

    afield = forms.ChoiceField(choices=my_choices)

Or 1 whatever logic you like inside my_choices.

Score: 2

In a view you could do the following

--views.py

lstChoices = _getMyChoices()

form.fields['myChoiceField'].choices = lstChoices

where 2 lstChoices is list of dynamically generated 1 tuples for your choices.

Score: 0

Use the constructor to set dynamic choices 4 as shown below:

class DateForm(forms.ModelForm):    
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        # Write the code here to set dynamic choices

        self.fields['month'].choices = dynamic_choices

In addition, I recommend 3 to add the empty label '("", "---------")' to dynamic choices so that the dynamic 2 choices works properly as the default behavior 1 of the select box in Django.

Source: stackoverflow.com

Django equivalent for count and group by

A QuerySet by aggregate field value

Django ORM: Selecting related set

django error 'too many values to unpack'

Serve a dynamically generated image with Django

Returning Matplotlib image as string

Django: Why do some model fields clash with each other?

How do I hide the field label for a HiddenInput widget in Django Admin?

Using Python Regular Expression in Django

searching all fields in a table in django

Cookie Warning

We use cookies to improve the performance of the site. By staying on our site, you agree to the terms of use of cookies.