[Django]-Django admin: How to populate a new object from GET variables?

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6👍

✅

I managed to figure it out. Thankfully, Django allows you to replace a request‘s GET dict (which it uses to pre-populate the admin form). The following worked for me:

class ArticleAdmin(admin.ModelAdmin):
    # ...

    def add_view(self, request, form_url='', extra_context=None):
        source_id = request.GET.get('source', None)
        if source_id is not None:
            source = FeedPost.objects.get(id=source_id)
            # any extra processing can go here...
            g = request.GET.copy()
            g.update({
                'title': source.title,
                'contents': source.description + u"... \n\n[" + source.url + "]",
            })
            request.GET = g

        return super(ArticleAdmin, self).add_view(request, form_url, extra_context)

This way, I obtain the source object from a URL parameter, do what I want with them, and pre-populate the form.

👤avramov

2👍

You can override method add_view of ModelAdmin instance. Add getting an object there, set object’s pk to None and provide that object as an instance to the form. Object with pk == None will be always inserted as a new object in the database on form’s save()

👤ilvar

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