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I'm running into an issue with a foreign key constraint.

I have three models:

PreferredDayTime (join table between users and)

DayTime (a collection of daytimes - connecting a day of the week and time of day)

and Day (each day of the week).

When creating a PreferredDayTime, I get a foreign key constraint, that the specified day_time_id does not exist on the table days.

I think rails is looking for a time_id in the days table, instead of a day_time_id in the day_times table.

How can I specify that the foreign key is not on the days table?

Not sure what to google with respect to the overlapping names

over 4 years ago · Santiago Trujillo

Answer question

Answer 1 · 2022-05-26T13:06:35.253Z

If you want to include foreign key , write

belongs_to: PreferredDayTime

In your DateTime model class

Answer 2 · 2022-05-26T13:06:35.287Z

You can specify foreign key:

has_many :days, class_name: "Days", foreign_key: "any_desirable_key_id"