Re: View to edit many-to-many relationship with extra fields

I'm not at all sure that this might help youm, so sorry if I write BS...

Can't you just use form prefixes to kepp the form namespaces seperated?
http://docs.djangoproject.com/en/1.2/ref/forms/api/#prefixes-for-forms

Regards,
Felix

On 01.10.2010 22:22, ses1984 wrote:
> http://docs.djangoproject.com/en/1.2/topics/db/models/#extra-fields-on-many-to-many-relationships
>
> I have two models with a many-to-many relationship through another
> table with extra fields. In this case, I have one extra field which
> represents the weight of the relationship.
>
> I'm working on a view to edit the relationships between the two
> models. If we call the two models left-hand-side and right-hand-side,
> then the view is specific to one instance of the LHS, and the purpose
> of the view is to add relationships from that LHS-row to an arbitrary
> number of pre-existing RHS-rows.
>
> Writing a view that, given an instance of the LHS, adds a single
> weighted relationship to an element on the RHS is pretty trivial.
> Writing view that adds an arbitrary number of relationships to the
> RHS is not that trivial, and that's what I would like to deliver to my
> users.
>
> So far the view for a particular LHS-instance renders a page with a
> form to define a single additional relationship to the RHS. I have
> included a basic ajax function that GETs another form to the page.
> This is where the problem comes up: IDs of the form elements are going
> to overlap, and I won't be able to handle this when the form is
> POSTed.
>
> I have thought of two options I could try to tackle this so far, both
> with javascript. The first would be to increment an index and send
> that through the ajax function to the view that returns a new form.
> The second would be to hook into the POST submission and munge the
> data before it's passed back to django to save model instances.
>
> It seems to me that something like this, while not common, has to have
> been done before in web apps. I was wondering if there were some
> established patterns to do this sort of thing, and if I am on the
> right track. I have searched a few places including django snippets
> and packages to see if something like this has been done before, but I
> couldn't find anything. I'm not sure if I'm using the best search
> terms.
>

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