warronbebster

warronbebster

Multiple has_many associations, different name, same struct

I’ve got a Schema “Details” and a Schema “Buildables”. Inside of Details, I want it to have multiple associations (shown below) but they’re all different iterations of the same schema, Buildables. Is this possible or do I have to make a unique schema for each of these associations?

schema "details" do
    has_many :single_family_homes, Buildable
    has_many :multi_family_homes, Buildable
    has_many :apartments, Buildable
    has_many :micro_apartments, Buildable
    has_many :high_rises, Buildable
schema "buildable" do
    field :enabled, :boolean
    field :reason, {:array, :string}
    field :upgrades, :map
    belongs_to :details, MayorGame.City.Details

Most Liked

al2o3cr

al2o3cr

The code shown in your post should certainly work, but it doesn’t include any distinction between the different kinds of Buildable. Assuming there is a type on Buildable as @zwippie did, you could filter the associations with where:

has_many :single_family_homes, Buildable, where: [type: "single_family_home"]
etc

See also the note under “Important!” at the bottom of that section.

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