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# File 'lib/empty_eye/associations/shard_association_scope.rb', line 11
def add_constraints(scope)
tables = construct_tables
chain.each_with_index do |reflection, i|
table, foreign_table = tables.shift, tables.first
if reflection.source_macro == :has_and_belongs_to_many
join_table = tables.shift
scope = scope.joins(join(
join_table,
table[reflection.association_primary_key].
eq(join_table[reflection.association_foreign_key])
))
table, foreign_table = join_table, tables.first
end
if reflection.source_macro == :belongs_to
if reflection.options[:polymorphic]
key = reflection.association_primary_key(klass)
else
key = reflection.association_primary_key
end
foreign_key = reflection.foreign_key
else
key = reflection.foreign_key
foreign_key = reflection.active_record_primary_key
end
conditions = self.conditions[i]
if reflection == chain.last
scope = scope.where(table[key].eq(owner[foreign_key]))
if reflection.type
scope = scope.where(table[reflection.type].eq(owner.master_class.base_class.name))
end
conditions.each do |condition|
if options[:through] && condition.is_a?(Hash)
condition = { table.name => condition }
end
scope = scope.where(interpolate(condition))
end
else
constraint = table[key].eq(foreign_table[foreign_key])
if reflection.type
type = chain[i + 1].klass.base_class.name
constraint = constraint.and(table[reflection.type].eq(type))
end
scope = scope.joins(join(foreign_table, constraint))
unless conditions.empty?
scope = scope.where(sanitize(conditions, table))
end
end
end
scope
end
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