I have two models, Product and Category and ManytoMany field in Product. The Category appear as key on ProductCreate View.
I need to customize the widget and field for Categories.
I checked in Django source Fields and Widgets but I don't see a reference(class) for ManyToMany.
To what type of Field and Widget ManyToMany relationship corresponds(I presume is Charfield as save or SelectField)? Where I can find the code ? (an example to customize field/widget in this case)
A model ManyToManyField is represented as a MultipleChoiceField and the default widget is SelectMultiple But, we can customise it.
You can find it in below references.
[1]https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#field-types
[2]https://docs.djangoproject.com/en/dev/ref/forms/widgets/#setting-arguments-for-widgets
from django import forms
from . import models
class ProductForm(forms.ModelForm):
class Meta:
model = models.Post
fields = [<fields-for-your-product-form>]
categories = forms.ModelMultipleChoiceField(
queryset=models.Category.objects.all(),
widget=forms.CheckboxSelectMultiple
)
This will render checkboxes in your form but you can substitute it with your preferred widget.
I've done something similiar where I was adding tags to blog posts. I wrote a tutorial for it- goes into more detail: https://ctrlzblog.com/how-to-add-tags-to-your-blog-a-django-manytomanyfield-example/