How to set the default/initial value for a field in a Django AdminForm?

Question

I have a Django admin form. And now I want to fill it's initial field with data based on my model. So I tried this:

class OrderForm(forms.ModelForm): class Meta: model = Order email = CharField(initial="null", widget=Textarea(attrs={'rows': 30, 'cols': 100})) def __init__(self, *args, **kwargs): self.request = kwargs.pop('request', None) products = kwargs['instance'].products.all() self.message = purchase_message % ( "".join(["<li>" + p.name + ": " + str(p.price) + "</li>" for p in products]), reduce(lambda x, y:x + y.price, products, 0) ) # and here I have a message in self.message variable super(OrderForm, self).__init__(*args, **kwargs)

At this point i don't know how to access email field to set it's initial value before widget is rendered. How can i do this?

Paul Kenjora · Accepted Answer · 2013-01-29 20:10:29Z

Assuming the value is based on 'request' you should use this:

class MyModelAdmin(admin.ModelAdmin): def get_form(self, request, obj=None, **kwargs): form = super(MyModelAdmin, self).get_form(request, obj, **kwargs) form.base_fields['my_field_name'].initial = 'abcd' return form

Wtower · Accepted Answer · 2017-05-11 10:09:11Z

52

Since Django 1.7 there is a function get_changeform_initial_data in ModelAdmin that sets initial form values:

def get_changeform_initial_data(self, request): return {'name': 'custom_initial_value'}

EDIT: Apart from that, @Paul Kenjora's answer applies anyway, which might be useful if you already override get_form.

In case of inline (InlineModelAdmin) there is no get_changeform_initial_data. You can override get_formset and set formset.form.base_fields['my_field_name'].initial.

edited May 11, 2017 at 10:09

answered Nov 11, 2015 at 10:39

Wtower

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6 Comments

Ozgur Vatansever Over a year ago

It doesn't work if you are using a custom form class for the model admin

Wtower Over a year ago

@ozgur naturally. If you use a custom form class then just use get_form as recommended in another answer. If not though, there is absolutely no reason to do so.

FistOfFury Over a year ago

thanks, this helped me. so many other posts have way more complicated ways of doing this.

djvg Over a year ago

Note that get_changeform_initial_data() is only called when adding new objects, not when changing existing ones. See source (Django 3.2).

Mahmoud Adel Over a year ago

Thank you for mentioning what to do in case of inline, I have been searching about it for a while

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Timmy O'Mahony · Accepted Answer · 2011-05-29 11:48:54Z

I'm not too sure what you need to set email to, but You can set the initial values in lots of different places.

Your function def init() isn't indented correctly which i guess is a typo? Also, why are you specifically giving the email form field a TextInput? It already renders this widget by default

You can set the email's initial value in your form's initialized (def __ init __(self))

(self.fields['email'].widget).initial_value = "something"

or in the model.py

email = models.CharField(default="something")

or as you have in forms.py

email = models.CharField(initial="something")

toto_tico · Accepted Answer · 2012-03-18 20:19:09Z

I needed the first solution of pastylegs since the other ones overwrite the whole Widget including, for example, the help text. However, it didn't work for me as he posted it. Instead, I had to do this:

self.fields['email'].initial = 'something'

In my case, I was trying to do a personalized auto-increment(based on current data and not a simple default) in a field of a django admin form.

valex · Accepted Answer · 2018-04-04 09:56:30Z

This code is worked for me (Django 1.11):

from django import forms class MyAdminForm(forms.ModelForm): def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.initial['field_name'] = 'initial_value'

Alex_FIR_IT · Accepted Answer · 2024-05-28 14:07:27Z

I don't know why but form.base_fields['my_field_name'].initial = 'abcd' doesn't really work in my case at all. I came up with the following code below after a few days.

models.py:

class Record(SaveMixin, models.Model): class ViewStatus(models.IntegerChoices): DRAFT = 0, "Черновик" PUBLISHED = 1, "Опубликовано" is_published = models.BooleanField(choices=ViewStatus.choices, verbose_name="Статус", default=ViewStatus.DRAFT )

admin.py:

def get_form(self, request, obj=None, **kwargs): form = super(MealRecordAdmin, self).get_form(request, obj, **kwargs) if obj: if obj.is_published: initial_choices = form.base_fields['is_published'].choices published_choice = initial_choices.pop(Record.ViewStatus.PUBLISHED) initial_choices.insert(0, published_choice) return form

Now, if user changes an already existing model instance through admin panel, the default value for "is_published" is being taken from DataBase. If I'm wrong about anything, tell me, please, about it

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