Django Admin nested inline

by

There has been some movement in https://code.djangoproject.com/ticket/9025 recently, but I wouldn’t hold my breath.

One common way around this is to link to an admin between first and second (or second and third) level by having both a ModelAdmin and an Inline for the same model:

Give Certificate a ModelAdmin with TrainingDate as an inline. Give CertificateInline an additional field “Details” which is a link to its ModelAdmin change form.

models.py:

from django.core import urlresolvers

class Certificate(models.Model):
    
    # ...
    
    def changeform_link(self):
        if self.id:
            # Replace "myapp" with the name of the app containing
            # your Certificate model:
            changeform_url = urlresolvers.reverse(
                'admin:myapp_certificate_change', args=(self.id,)
            )
            return u'<a href="%s" target="_blank">Details</a>' % changeform_url
        return u''
    changeform_link.allow_tags = True
    changeform_link.short_description = ''   # omit column header

admin.py:

# Certificate change form has training dates as inline

class TrainingDateInline(admin.StackedInline):
    model = TrainingDate

class CertificateAdmin(admin.ModelAdmin):
    inlines = [TrainingDateInline,]
admin.site.register(Certificate ,CertificateAdmin)

# Person has Certificates inline but rather
# than nesting inlines (not possible), shows a link to
# its own ModelAdmin's change form, for accessing TrainingDates:

class CertificateLinkInline(admin.TabularInline):
    model = Certificate
    # Whichever fields you want: (I usually use only a couple
    # needed to identify the entry)
    fields = ('cerfificate_no', 'certificate_date', 'changeform_link')
    readonly_fields = ('changeform_link', )

class PersonAdmin(admin.ModelAdmin):
    inlines = [CertificateLinkInline,]
admin.site.register(Person, PersonAdmin)

More Related Contents:

  1. Nested inlines in the Django admin?
  2. Resize fields in Django Admin
  3. Add custom form fields that are not part of the model (Django)
  4. Django auto_now and auto_now_add
  5. Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
  6. Django – No such table: main.auth_user__old
  7. Getting TypeError: __init__() missing 1 required positional argument: ‘on_delete’ when trying to add parent table after child table with entries
  8. Django values_list vs values
  9. How to change ForeignKey display text in the Django Admin?
  10. How to display uploaded images in “Change List” page in Django Admin?
  11. Difference between AbstractUser and AbstractBaseUser in Django?
  12. Django admin file upload with current model id
  13. one-to-many inline select with django admin
  14. Override a form in Django admin
  15. How can I set a default value for a field in a Django model?
  16. Django Admin: Using a custom widget for only one model field
  17. Django Multiple Databases – relation does not exist; LINE 1: SELECT COUNT(*) AS “__count” FROM
  18. Django admin: How to display the field marked as “editable=False” in the model?
  19. How to properly use the “choices” field option in Django
  20. Django admin – inline inlines (or, three model editing at once)
  21. Django dynamic model fields
  22. How to create an object for a Django model with a many to many field?
  23. django abstract models versus regular inheritance
  24. Get all related Django model objects
  25. How to set the timezone in Django
  26. Django Rest Framework and JSONField
  27. Django: OperationalError No Such Table
  28. many-to-many in list display django
  29. How to change the file name of an uploaded file in Django?
  30. Easiest way to rename a model using Django/South?

Leave a Comment