Djangoadminsite (c) inlinemodeladmin

Inlinemodeladmin

Class Inlinemodeladmin
Class Tabularinline
Class Stackedinline

For example, there are two model:

From django.db import Models

Class Author (models. Model):
Name = models. Charfield (max_length=100)

Class book (Models. Model):
Author = models. ForeignKey (Author)
title = models. Charfield (max_length=100)

If you want to edit book on the author page:

From Django.contrib Import admin

Class Bookinline (admin. Tabularinline):
Model = Book

Class Authoradmin (admin. Modeladmin):
Inlines = [
Bookinline,
]

Django provides a subclass of two inlinemodeladmin:

Tabularinline
Stackedinline
The difference is in the template used.

Inlinemodeladmin Options

The common options for Inlinemodeladmin and Modeladmin are:

Form
FieldSets
Fields
Formfield_overrides
Exclude
Filter_horizontal
Filter_vertical
Ordering
Prepopulated_fields
Get_queryset ()
Radio_fields
Readonly_fields
Raw_id_fields
Formfield_for_choice_field ()
Formfield_for_foreignkey ()
Formfield_for_manytomany ()
Has_add_permission ()
Has_change_permission ()
Has_delete_permission ()

The additional options are:

Inlinemodeladmin.model
The model used for inline is required.

Inlinemodeladmin.fk_name
The name of model, used when there are multiple foreign keys.

Inlinemodeladmin.formset
Default Baseinlineformset.

Inlinemodeladmin.form
Default Modelform. Passed to Inlineformset_factory () when FormSet is created.

Inlinemodeladmin.extra
The extra number of inline.

Inlinemodeladmin.get_extra () also returns the extra number of inline.

Inlinemodeladmin.max_num
The maximum number that can be displayed.

Inlinemodeladmin.get_max_num () also returns this number.

Inlinemodeladmin.min_num
The minimum number that can be displayed.

Inlinemodeladmin.get_min_num () also returns this number.

Inlinemodeladmin.raw_id_fields
With Modeladmin.

Class Bookinline (admin. Tabularinline):
Model = Book
Raw_id_fields = ("pages",)

Inlinemodeladmin.template
The template used.

Inlinemodeladmin.verbose_name
Overwrite the verbose_name in the Meta class.

Inlinemodeladmin.verbose_name_plural
Ditto

Inlinemodeladmin.can_delete
The default is true.

Inlinemodeladmin.get_formset (Request, Obj=none, **kwargs)
Refer to Modeladmin.get_formsets_with_inlines.

Inlinemodeladmin.get_extra (Request, Obj=none, **kwargs)

Class Binarytreeadmin (admin. Tabularinline):
Model = BinaryTree

def get_extra (self, request, Obj=none, **kwargs):
Extra = 2
If obj:
Return Extra-obj.binarytree_set.count ()
Return extra

Inlinemodeladmin.get_max_num (Request, Obj=none, **kwargs)

Class Binarytreeadmin (admin. Tabularinline):
Model = BinaryTree

def get_max_num (self, request, Obj=none, **kwargs):
Max_num = 10
If obj.parent:
Return max_num-5
Return Max_num

Inlinemodeladmin.get_min_num (Request, Obj=none, **kwargs)
See above.

The case of multiple foreignkey chains to the same model

If there are multiple foreign keys:

From django.db import Models

Class friendship (models. Model):
To_person = models. ForeignKey (person, related_name= "friends")
From_person = models. ForeignKey (person, related_name= "From_friends")

Show one of these:

From Django.contrib Import admin
From Myapp.models Import Friendship

Class Friendshipinline (admin. Tabularinline):
Model = Friendship
Fk_name = "To_person"

Class Personadmin (admin. Modeladmin):
Inlines = [
Friendshipinline,
]

Working with Many-to-many Models

Model Example:

From django.db import Models

Class person (models. Model):
Name = models. Charfield (max_length=128)

Class Group (models. Model):
Name = models. Charfield (max_length=128)
Members = models. Manytomanyfield (person, related_name= ' groups ')

Inlines Show:

From Django.contrib Import admin

Class Membershipinline (admin. Tabularinline):
Model = Group.members.through

Class Personadmin (admin. Modeladmin):
Inlines = [
Membershipinline,
]

Class Groupadmin (admin. Modeladmin):
Inlines = [
Membershipinline,
]
Exclude = (' Members ',)

Note:

First, the Membershipinline class points to Group.members.through. The through attribute points to the database that manages the many-to-many relationship.

Second, the groupadmin must exclude the Members field.

Working with Many-to-many intermediary models

An example of an intermediate model is clearly indicated:

From django.db import Models

Class person (models. Model):
Name = models. Charfield (max_length=128)

Class Group (models. Model):
Name = models. Charfield (max_length=128)
Members = models. Manytomanyfield (person, through= ' membership ')

Class Membership (models. Model):
Person = models. ForeignKey (person)
Group = models. ForeignKey (Group)
date_joined = models. Datefield ()
Invite_reason = models. Charfield (max_length=64)

The first step:

Class Membershipinline (admin. Tabularinline):
Model = Membership
Extra = 1

Step Two:

Class Personadmin (admin. Modeladmin):
Inlines = (Membershipinline,)

Class Groupadmin (admin. Modeladmin):
Inlines = (Membershipinline,)

Step Three:

Admin.site.register (person, personadmin)
Admin.site.register (Group, Groupadmin)

Using generic relations as an inline

An inline with generically related objects example:

From django.db import Models
From Django.contrib.contenttypes.fields import Genericforeignkey

Class Image (models. Model):
Image = Models. ImageField (upload_to= "Images")
Content_Type = models. ForeignKey (ContentType)
OBJECT_ID = models. Positiveintegerfield ()
Content_object = Genericforeignkey ("Content_Type", "object_id")

Class Product (models. Model):
Name = models. Charfield (max_length=100)

If you want to edit an image instance on the Product Add/change page, you can use Generictabularinline or genericstackedinline:

From Django.contrib Import admin
From django.contrib.contenttypes.admin import Generictabularinline

From myproject.myapp.models import Image, Product

Class Imageinline (Generictabularinline):
Model = Image

Class Productadmin (admin. Modeladmin):
Inlines = [
Imageinline,
]

Admin.site.register (Product, Productadmin)

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