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Contents
class Graphiti::Sideload::ManyToMany < Graphiti::Sideload::HasMany
def type
:many_to_many
end
def through
foreign_key.keys.first
end
def true_foreign_key
foreign_key.values.first
end
def base_filter(parents)
{true_foreign_key => ids_for_parents(parents).join(",")}
end
def infer_foreign_key
raise "You must explicitly pass :foreign_key for many-to-many relationships, or override in subclass to return a hash."
end
def performant_assign?
false
end
# Override in subclass
def polymorphic?
false
end
def apply_belongs_to_many_filter
self_ref = self
fk_type = parent_resource_class.attributes[:id][:type]
fk_type = :hash if polymorphic?
resource_class.filter true_foreign_key, fk_type do
eq do |scope, value|
self_ref.belongs_to_many_filter(scope, value)
end
end
end
def assign_each(parent, children)
children.select do |c|
match = ->(ct) { ct.send(true_foreign_key) == parent.send(primary_key) }
c.send(through).any?(&match)
end
end
end
Version data entries
33 entries across 33 versions & 1 rubygems