Hi
On Thu, May 19, 2016, at 19:21, Johnny Stewart wrote:
> I have changed the primary key on a table “statuses” to now be
> entity_id
>
> In my status model I have:
>
> self.primary_key = 'entity_id'
>
> when I try to render a collection of comments associated with a status
> like so:
>
> <%= render @comments %>
>
> I get this error:
>
> PG::UndefinedColumn: ERROR: column comments.status_id does not exist
> LINE 1: SELECT "comments".* FROM "comments" WHERE "comments"."status_id"
>
> I'm assuming when the above call is constructed by rails it is assuming
> the table statuses has primary key status.id by convention..
>
All it does is taking the model name and suffix it with _id. Specifying
:foreign_key option should work.
:foreign_key
Specify the foreign key used for the association. By default this is
guessed to be the name of this class in lower-case and “_id”
suffixed. So a Person class that makes a has_and_belongs_to_many
association to Project will use “person_id” as the default
:foreign_key.
http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html
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