How do you populate an update form in a Bootstrap Modal?
Michael Chenetz
Matthew Pava
Hi Mike,
Make sure you are setting the instance argument when you instantiate the form.
Typically, you would pass in a pk to the view.
def my_update_view(request, pk):
obj = get_object_or_404(MyModel, pk=pk)
form = MyForm(request.POST or None, instance=obj)
….
I hope this helps you.
Best wishes,
Matthew
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Michael Chenetz
Matthew Pava
I see. We are using Bootbox for our modals, but I’m sure the concept is the same.
We have a separate template of the form that we include when we initialize the page. We have an event listener on the modal button, so that when it is clicked, it replaces the HTML inside the form with the HTML returned by our ajax view. In order to get a specific object, we use the querystring to pass the PK of the object to retrieve in the ajax view. We have a save button on our modal form, and that POSTs back to the same ajax view. If it does not validate, we return the HTML of the form with validation errors; otherwise, we send back a success message so that the event handler on the save button can close the modal or reload the page or do something else.
That is probably as clear as mud…
From: django...@googlegroups.com [mailto:django...@googlegroups.com] On Behalf Of Michael Chenetz
Sent: Friday, March 3, 2017 2:37 PM
To: Django users
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Michael Chenetz
Mike
Melvyn Sopacua
Hi Michael,
Disclaimer: leaving the Javascript side of things out of scope.
On Friday 03 March 2017 12:07:16 Michael Chenetz wrote:
> I am trying to figure out how to populate the update model form in a
> Bootstrap Modal. I can add to a form no problem but update does not
> seem to pre-populate the form when it is viewed.
Look at how ModelFormMixin does it:
- get_content_data from FormMixin calls get_form()
- this gets the form class and calls get_form_kwargs()
- ModelFormMixin injects the 'instance' keyword argument for the ModelForm
So, in order to prepopulate the form in the modal you need to provide the instance argument and assign it the model instance. I assume you know what model instance you need to update.
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Melvyn Sopacua
Michael Chenetz
Melvyn Sopacua
On Sunday 05 March 2017 13:40:44 Michael Chenetz wrote:
> Thanks Melvyn... I am not having issues with a generic update form.
The important stuff is in the last line. I was explaining how you can do it and where to look for inspiration.
> The problem is when using it in a Bootstrap Modal. I think it is a
> javascript/ajax issue. That is the piece I need to figure out.
That depends on your workflow. You can fill the form using an Ajax call, yes. But - you don't have to.
The above is part of code I'm working on. I am actually working on handling duplicated form media in the AdditionalFormsManager, so it certainly isn't production quality yet - but it will work just fine for illustration purposes or base for your own code.
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Melvyn Sopacua