Field Readonly After Save

get_readonly_fields

If you want to make a field editable before save and readonly after save. You can override get_readonly_fields in admin.py to realize it

• Definition

  get_readonly_fields(self, request, obj=None)
  

• Usage

  • Make Appointed Fields Readonly

    from django.contrib import admin
    
    class MyModelAdmin(admin.ModelAdmin):
        def get_readonly_fields(self, request, obj=None):
            if obj:  # editing an existing object
                return self.readonly_fields + ('field1', 'field2')
            return self.readonly_fields
    

    • field1 and field2 will be editable before save and readonly after save

  • Make All Fields Readonly

    from django.contrib import admin
    
    class MyModelAdmin(admin.ModelAdmin):
        def get_readonly_fields(self, request, obj=None):
            if obj:  # editing an existing object
                return self.readonly_fields + tuple(obj._meta.get_all_field_names())
                # return self.readonly_fields + tuple(f.name for f in self.model._meta.fields)
                # return self.readonly_fields + tuple(f.name for f in obj._meta.fields)
            return self.readonly_fields
    

    • get_all_field_names() removed in Django 1.10

References

[1] yprez@StackOverflow, Django admin - make all fields readonly ​