iXce's blog » Django http://guillaume.segu.in/blog Stuff that doesn’t matter Mon, 28 Feb 2011 22:28:27 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 Tip of the day: Dynamic forms with Django newforms http://guillaume.segu.in/blog/home/116/tip-of-the-day-dynamic-forms-with-django-newforms/ http://guillaume.segu.in/blog/home/116/tip-of-the-day-dynamic-forms-with-django-newforms/#comments Sun, 06 Apr 2008 21:03:57 +0000 iXce http://guillaume.segu.in/blog/?p=116 Building dynamic forms with Django newforms module is quite undocumented, though it’s quite easy to do. All you need to do is to hook up the __init__ function of the form, raise the __init__ to the parent forms.Form class and then add your dynamically generated fields to self.fields dict.

Here is a quick snippet demonstrating it, which will create a form with n integer fields named from 0 to (n – 1), but you will easily be able to heavily extend it.

from django import newforms as forms
 
class MyForm (forms.Form):
 
    def __init__ (self, n, *args, **kwargs):
        forms.Form.__init__ (self, *args, **kwargs)
        for i in range (0, n):
            field = forms.IntegerField (label = "%d" % i, required = True,
                                        min_value = 0, max_value = 200)
            self.fields["%d" % i] = field
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