Deform forms select2 and ajax

[Jo G]

Hi, I have a pyramid based application using substanced and deform. I am using a select2 drop down pre-populated with a list of items. The list is very long and takes forever to load. Looking at select2 I should be able to use an Ajax call to a pyramid view to return a subset of the data.
Deform uses an old version of select2 and I'm finding it hard to get it and substanced to play nicely together.
My approach would be:
Define a view that returns a subset of data
Create my own widget based on the select2 widget
Write a new template for the widget
Make the form use Ajax

Anybody done this or can help?

Is there any reason I couldn't use an updated version of select2 jquery?

Is there a better widget I could use? I need to display a text value and return an associated integer ID.

Thanks in advance.

[Thierry Florac]

Hi,

I think "select2" is a perfect candidate for your needs.

I use it in my Pyramid applications but with z3c.form package and it works perfectly with AJAX calls.

The simplest way is probably to create a JSON view which returns a list of objects containing "id" and "text" attributes matching text you started to enter.

I can help you concerning the required HTML, AJAX and Javascript integration, but I don't know "deform" package requirements...

Regards,

Thierry

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[tonthon]

Hi,

starting from the original deform widget, you should be able to build a
custom one fitting your needs.

If you're using deform's requirements to generate the script tags in
your pages, you could set custom widget requirements for a more recent
version of select2.

The original widget's code :
https://github.com/Pylons/deform/blob/master/deform/widget.py
https://github.com/Pylons/deform/blob/master/deform/templates/select2.pt

The docs :
http://docs.pylonsproject.org/projects/deform/en/latest/widget.html#writing-your-own-widget
http://docs.pylonsproject.org/projects/deform/en/latest/widget.html#specifying-widget-requirements

Hope this can help
Regards

Gaston Tjebbes
http://majerti.fr

[Jo G]

Many thanks - we had got that far already and with a bit more effort now have a select2 which returns results from a solr search. Just need to be able to select values now!