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module GraphitiGql
module Loaders
class ManyToMany < Many
def assign(parent_records, proxy)
thru = @sideload.foreign_key.keys.first
fk = @sideload.foreign_key[thru]
add_join_table_magic(proxy)
records = proxy.data
parent_records.each do |pr|
corresponding = records.select do |record|
record.send(:"_edge_#{fk}") == pr.send(@sideload.primary_key)
end
fulfill(pr, [corresponding, proxy])
end
end
private
def thru_model
thru = @sideload.foreign_key.keys.first
reflection = @sideload.parent_resource.model.reflect_on_association(thru)
reflection.klass
end
def add_join_table_magic(proxy)
return unless @sideload.edge_magic
if defined?(ActiveRecord) && proxy.resource.model.ancestors.include?(ActiveRecord::Base)
thru_table_name = @sideload.join_table_alias || thru_model.table_name
names = thru_model.column_names.map do |n|
next if n == :id
"#{thru_table_name}.#{n} as _edge_#{n}"
end
scope = proxy.scope.object
scope = scope.select(["#{proxy.resource.model.table_name}.*"] + names)
proxy.scope.object = scope
end
end
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems