Foreign Key

Thanks for a really nicely implemented project. Annotated source code is always a deity-send. I have a few questions:

Is there a way to create foreign keys to other tables? The source code has a function foreign with the comment “Specify a foreign key for the table.” within the SchemaBuilder, but there doesn’t seem to be a way to specify a table and column for the foreign key, and the documentation doesn’t mention anything.

Is there a way to specify that two or more columns must be unique together?

Is there a way to define indexes on non-integer columns?

Thanks!

[davethesoftwaredev]

Edit: jtremback has this in his above as well.

In order to get this work, I had to do the following:

1. Create the parent tables first, then create the child tables (parallel issue mentioned above)
2. I’m using table.increments(‘id’) to create the primary key of the parent tables, and this creates them as unsigned auto_increment integers.
3. To have it actually create the foreign key, I had to something like:

table.integer('parentid').unsigned().references('id').inTable('parent'); 

Where parentid is the field in the child table that should reference the field id in the parent table.

The unsigned part in step 3 was key. MySql wouldn’t create the foreign key if the type didn’t match, and it also seemed to silently fail in that case, though that could be a problem with my error handling.

[bendrucker]

You might want to take a look at #148 for an example of how I do migrations. Your best bet is to create tables and their primary keys / regular columns in one migration and then add the foreign key columns in a second one. Any other way creates a huge mess.