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pythondjangodjango-formsdjango-admindjango-modeladmin
Amal chempazhanthy
Amal chempazhanthy

Reputation: 53

How To Edit ManyToManyField In Django Admin list Display Page?

I want to add Many2Many fields editable in Django admin list_display page. The model structure as below,

class Genre(models.Model):
    name = models.CharField(max_length=250, unique=True)


class Movie(models.Model):
    name = models.CharField(max_length=250)
    genre = models.ManyToManyField(Genre)

And I tried as,

class MovieAdmin(admin.ModelAdmin):
    list_display = ['name', 'genre']
    list_editable = ['genre']

Above throws an error.

Upvotes: 5

Views: 7879

Answers (2)

Prashant Yengantiwar
Prashant Yengantiwar

Reputation: 156

Django by default won't allow to add ManyToManyField in list_editable in ModelAdmin. So we need to override model admin methods.

On looking your models you need to follow below steps to get the ManyToManyField editable in list display page.

In apps/forms.py you need to define which ManyToMany fields you need to make editable in list display page. As below,

from django import forms
from app.models import Genre


class MovieChangeListForm(forms.ModelForm):

    # here we only need to define the field we want to be editable
    genre = forms.ModelMultipleChoiceField(queryset=Genre.objects.all(), 
        required=False)

In app/admin.py you need to override methods of model admin. As below,

from django.contrib import admin
from django.contrib.admin.views.main import ChangeList
from app.models import Movie
from app.forms import MovieChangeListForm

class MovieChangeList(ChangeList):

    def __init__(self, request, model, list_display,
        list_display_links, list_filter, date_hierarchy,
        search_fields, list_select_related, list_per_page,
        list_max_show_all, list_editable, model_admin):

        super(MovieChangeList, self).__init__(request, model,
            list_display, list_display_links, list_filter,
            date_hierarchy, search_fields, list_select_related,
            list_per_page, list_max_show_all, list_editable, 
            model_admin)

        # these need to be defined here, and not in MovieAdmin
        self.list_display = ['action_checkbox', 'name', 'genre']
        self.list_display_links = ['name']
        self.list_editable = ['genre']


class MovieAdmin(admin.ModelAdmin):

    def get_changelist(self, request, **kwargs):
        return MovieChangeList

    def get_changelist_form(self, request, **kwargs):
        return MovieChangeListForm


admin.site.register(Movie, MovieAdmin)

Now you all set to check the changes, run server and check django admin for Movie model. You can edit ManyToMany field directly from list display page.

Note : If you are going to use muliptle ManyToManyFields editable in list then, you need to set DATA_UPLOAD_MAX_NUMBER_FIELDS in settings.py .

Upvotes: 3

DeprecatedAPI
DeprecatedAPI

Reputation: 124

As far as I understand, you want to add the model in your admin page.

to do so, you need to simply do this in your admin.py file inside your django app

admin.site.register(MovieAdmin)

It is automatically editable. Hope this helps.

Upvotes: 0

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