Initialize forms.Select wizard

Using Django Forms & APIs
1

I would like to initialize a form field (owner) with a 2-tuple in get_form_initial. For testing purposes, I’ve hardcoded initial to the tuple, but the owner select field is never populated. I eventually will retrieve data from the db for initializing the owner field.

However, I am able to initialize the owner field with a single value when forms.Select is changed to forms.TextInput, but never with a 2-tuple when owner is defined as a forms.Select.

I will really appreciate any help on this.

Thanks

models.py (partial)

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forms.py (partial)

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views.py

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2

The initial data for a form represent the existing values of the data, not the options available to be selected.

Where are you setting the choices attribute for the owner field?

3

Ken, still learning Django, but now I understand.

I initially thought I could just define the model and form field, and then in the wizard step, pre-populate the owner field in the form. Would it be best to perform a queryset in the form, and then assign the choice values to owner?

Thanks for your assistance!

4

I’m not sure I’m quite following you. You can prepopulate the value of the owner field. However, if the field is a Select field, then the value being set must be one of the choices.

When you use a Select field, it will assign the value selected in the form to the model field. That’s not something you need to do yourself.

5

Thanks, Ken. I’m going to investigate changing owner to ChoiceField.

Cheers

6

Again, I’m not sure I’m following you here. First, I mistakenly called Choice field a “Select” field. (It’s a mistake I make often.) The field is a Choice field, the widget is the Select widget.

So there’s nothing to be “changed” here in the form.

7

Hi Ken, got it working!!! Much appreciated for your insight.

I changed my owner field to:

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and it now updates dynamically. One issue though. I lost my formatting for my owner widget.

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Any ideas how this can be implemented?

Thanks again!

Cheers

8

Include the attrs attribute in your forms.Select( constructor with the choices=... attribute.

9

Formatting is back - thanks!

I did try this initially, but I inadvertently added the attributes outside of the enclosed “choices”, instead of within the Select params.

Take care, and thanks again.

Cheers,
Dave