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
      

References

[1] [email protected], Django admin - make all fields readonly

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