method
build_constraint
v4.2.1 -
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- Class:
ActiveRecord::Associations::JoinDependency::JoinAssociation
build_constraint(klass, table, key, foreign_table, foreign_key)public
Builds equality condition.
Example:
class Physician < ActiveRecord::Base
has_many :appointments
end
If I execute `Physician.joins(:appointments).to_a` then
klass # => Physician table # => #<Arel::Table @name="appointments" ...> key # => physician_id foreign_table # => #<Arel::Table @name="physicians" ...> foreign_key # => id