django-select-by [This project is under development]

Description

Project, which brings a widget, which has the function of loading a select list from another select list.

Requirements

1. This project was made for Django projects.
2. The two fields involved must be linked to by forekeys.

Step by step

1. To install you should use the command pip install django_select_by
2. In your form.py file you must import the django_select_by lib and used in the field to be populated, it must be of type ModelChoiceField using the SelectBy widget (select_by = 'bank') passing the parent.

fromt django_select_by.widget import SelectBy

class MyForm(forms.Form):
   
    banco = forms.ModelChoiceField(label='Banco', required=CADASTRAL, widget=forms.Select(),
                                   queryset=Banco.objects.all())
    agencia = forms.ModelChoiceField(label='Agência', required=CADASTRAL, widget=SelectBy(select_by='banco'),
                                     queryset=Agencia.objects.all())

3. In your template you must include the file select_by.js and use in your change method of the parent field the select_by method

{% include 'django_select_by/select_by.html' %}

(function($)
{
    $('#id_banco').change(function()
    {
        var agencia = $('#id_agencia').val();

        if($(this).val() && $(this).val() > 0)
            select_by('id_agencia', $(this).val());

        $('#id_agencia').val(agencia);
    })
    .trigger('change');
})
(jQuery);