Re: EmailField: unable to make it mandatory?

i looked into database directly:
foo=> \d eventsmgmt_subscription
                                         Table « public.eventsmgmt_subscription »
       Colonne       |           Type           |         Modificateurs
---------------------+--------------------------+--------------------------------------------------------------------------
 id                  | integer                  | non NULL Par défaut, nextval('eventsmgmt_subscription_id_seq'::regclass)
 created_by_id       | integer                  | non NULL
 email               | character varying(75)    | non NULL

as you can see, "not NULL" is in the table


thanks for reply,

--
Gérard Henry

*smacks forehead* Yes, you're right. I apologize for the red herring. I forgot that we're dealing with a CharField.

It dawned on me as soon as I read this. TheCharField (and others) will use an empty string ("") as their 'empty' value, as opposed to None/null. This is a design decision of Django: 

https://docs.djangoproject.com/en/1.9/ref/models/fields/#null

That means if you want to enforce having any CharField to be required at the model level, you'll need to define a custom validation function to do so.

https://docs.djangoproject.com/en/1.9/ref/models/fields/#validators

https://docs.djangoproject.com/en/1.9/ref/validators/

In general, though, this type of validation is usually done at the form and sometimes view level where end-user input is filtered before being sent to the model code, since the models can sometimes be populated by other sources such as a CSV import that may have different requirements than a standard end-user. But that may not be applicable in your case. 

-James

 

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