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Hmm - yeah the docs are sort of unclear, if you're not familiar with the convention. :categories_suppliers implies that the table is a join table (a many-to-ma
by rahoulb 15y ago
Hmm - yeah the docs are sort of unclear, if you're not familiar with the convention.
:categories_suppliers implies that the table is a join table (a many-to-many join between categories and suppliers) - which is why it has no ID and why it only has the two foreign key fields with no other data.
- trebor 15y agoYet the assumption that all models require an ID is a fallacy. I was generating reports unique to the day, therefore a simple Date field was adequate as an index/ID. I don't know about other ORMs but when working directly with the SQL it'd be no issue. I hold out that it's a problem in the design of ActiveRecord to assume that there will always be a primary key. That said, if I can just tell the model "identify yourself by this key" WITHOUT setting it as the primary key I would be happy.