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Versions: 21
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Stored size: 1.36 KB
Contents
module ActiveRecord
module Associations
class Preloader
class HasAndBelongsToMany
def records_for(ids)
# CPK
# scope = super
predicate = cpk_in_predicate(join_table, reflection.foreign_key, ids)
scope = build_scope.where(predicate)
klass.connection.select_all(scope.arel.to_sql, 'SQL', scope.bind_values)
end
def join
# CPK
#condition = table[reflection.association_primary_key].eq(
# join_table[reflection.association_foreign_key])
condition = cpk_join_predicate(table, reflection.association_primary_key,
join_table, reflection.association_foreign_key)
table.create_join(join_table, table.create_on(condition))
end
def association_key_alias(field)
"ar_association_key_name_#{field.to_s}"
end
def join_select
# CPK
# association_key.as(Arel.sql(association_key_name))
Array(reflection.foreign_key).map do |key|
join_table[key].as(Arel.sql(association_key_alias(key)))
end
end
def association_key_name
# CPK
# 'ar_association_key_name'
Array(reflection.foreign_key).map do |key|
association_key_alias(key)
end
end
end
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems