Question

I am having a problem creating a foreign key in my table. The foreign key table is:

CREATE TABLE `main_app_provider` (
  `provider` varchar(100) NOT NULL DEFAULT '',
  `provider_slug` varchar(100) DEFAULT NULL,
  PRIMARY KEY (`provider`),
  KEY `main_app_provider_75a6f163` (`provider_slug`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

If I do the generic provider = models.ForeignKey('main_app.Provider') I get an errno:150. How would I add a field in django with the exact criteria defined in provider?

Answer 1

Use to_field to specify the field that Django should use as the primary key.

provider = models.ForeignKey('main_app.Provider', to_field='provider')