Question

My Post model in schema.yml (Symfony 1.4) looks like this:

Post:
  columns:
    id: { type: bigint, notnull: true, primary: true }
    blog_id: { type: bigint, notnull: true, primary: true }
    user_id: { type: bigint, notnull: true }
    subject: { type: string(255), notnull: true }
    short_body: { type: text, notnull: true }
    long_body: { type: text }

as you can see Post has a multi-column PK. My question is “How can I create n:1 relationship with this model?”

As an example, I want something like this:

PostComment:
  columns:
    post_id: { type: bigint, notnull: true }
    blog_id: { type: bigint, notnull: true }
    name: { type: string(255), notnull: true }
    email: { type: string(255) }
    text: { type: text, notnull: true }
  relations:
    Post:
      #Here is my problem. What should I write here?
      local: ????
      foreign: ????
      foreignAlias: Comments
      onDelete: cascade
      onUpdate: cascade

How can I handle this type of relationship?

Answer 1

You can’t.
You can add another primary key to your Post model, and keeping another couple of fields as unique. If you do so, I strongly advice to make “id” your primary key and use another field name as unique along with “blog_id”.
Then, just use relations as usual from PostComment.