return values from static files to django admin

[dc]

I have declared a charfield 'choice_text' in one of my models. I want to convert it to a dropdown box in django admin. The choices in the dropdown list depend on user input to a textbox defined in another model class. I have a javascript (declared  as Media class inside a ModelAdmin class) that reads user input in the textbox. But I am unable to this choice list back from .js file to django admin. How do I do that? Thanks in advance.

I have tried this.

models.py

class Routing(models.Model):

    choice_text = models.CharField(_('Choices'), max_length=100, default="(any)", null=False)

admin.py

class AdminRoutingInlineForm(forms.ModelForm):

    def __init__(self, *args, **kwargs):

        super(AdminRoutingInlineForm, self).__init__(*args, **kwargs)

        CHOICES = [('a', 'any'),('b', 'blah'),]      // override this with choices from populate_dropdown.js (code below)

        self.fields['choice_text'].choices = CHOICES

class RoutingInlineAdmin(StackedInline):

    form = AdminRoutingInlineForm    

    fields = (('choice_text', 'next'),)

    model = Routing

class FormModelAdmin(ModelAdmin):

    inlines = [RoutingInlineAdmin]

    class Media:

        js= ("sforms/admin/populate_dropdown.js",)

populate_dropdown.js

(function($) {

    $(document).ready(function() {

       

        $("[id^=id_fields-][id$=_options_0]").each(function(){       // user input from this field will be used as choices

        choices = '(any),' + $(this).val().split("\n");

        alert(choices);

        

        // send this choices back to admin.py and override CHOICES in AdminRoutingInlineForm class

        });  

});

 

[dc]

Any lead will be extremely helpful. I am still stuck. :(

[Andreas Kuhne]

Hi,

What you are suggesting doesn't work. You can't communicate with the django backend via javascript if you don't use a lot of ajax requests. I would check django-smart-selects and see if you could use that?

Regards,

Andréas

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[dc]

Thanks a lot. Let me look into it.

Is there any other way I can populate my choice list with user input?

[Andreas Kuhne]

Hi,

Yes you could just populate the dropdown list with javascript. 

Regards,

Andréas

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[ananya choudhury]

I tried that. But in that case I need to declare choices in models.py for that field (so that the field is displayed as a dropdown in admin) and then django doesn't accept any string that's not part of the choices list. I am pretty sure I am missing something here.

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[Collin Anderson]

Hi,

You may need to also calculate the possible options in python. Some hacky code that might help:

class AdminRoutingInlineForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(AdminRoutingInlineForm, self).__init__(*args, **kwargs)

        field1 = self.data.get('field1', '')
        CHOICES = [('a', '%s any' % field1),('b', '%s blah' % field1),]
        self.fields['choice_text'].choices = CHOICES

Collin