diff options
Diffstat (limited to 'activerecord/lib/active_record/relation/spawn_methods.rb')
-rw-r--r-- | activerecord/lib/active_record/relation/spawn_methods.rb | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/activerecord/lib/active_record/relation/spawn_methods.rb b/activerecord/lib/active_record/relation/spawn_methods.rb index 648a02f1cc..db5f1af5ca 100644 --- a/activerecord/lib/active_record/relation/spawn_methods.rb +++ b/activerecord/lib/active_record/relation/spawn_methods.rb @@ -3,10 +3,11 @@ require 'active_support/core_ext/object/blank' module ActiveRecord module SpawnMethods def merge(r) - merged_relation = clone - return merged_relation unless r + return self unless r return to_a & r if r.is_a?(Array) + merged_relation = clone + Relation::ASSOCIATION_METHODS.each do |method| value = r.send(:"#{method}_values") @@ -24,31 +25,36 @@ module ActiveRecord merged_relation.send(:"#{method}_values=", merged_relation.send(:"#{method}_values") + value) if value.present? end - merged_relation = merged_relation.joins(r.joins_values) + merged_relation.joins_values += r.joins_values merged_wheres = @where_values + r.where_values - # Remove duplicates, last one wins. - seen = {} - merged_wheres = merged_wheres.reverse.reject { |w| - nuke = false - if w.respond_to?(:operator) && w.operator == :== - name = w.left.name - nuke = seen[name] - seen[name] = true - end - nuke - }.reverse + unless @where_values.empty? + # Remove duplicates, last one wins. + seen = Hash.new { |h,table| h[table] = {} } + merged_wheres = merged_wheres.reverse.reject { |w| + nuke = false + if w.respond_to?(:operator) && w.operator == :== + name = w.left.name + table = w.left.relation.name + nuke = seen[table][name] + seen[table][name] = true + end + nuke + }.reverse + end merged_relation.where_values = merged_wheres - (Relation::SINGLE_VALUE_METHODS - [:lock]).each do |method| + (Relation::SINGLE_VALUE_METHODS - [:lock, :create_with]).each do |method| value = r.send(:"#{method}_value") merged_relation.send(:"#{method}_value=", value) unless value.nil? end merged_relation.lock_value = r.lock_value unless merged_relation.lock_value + merged_relation = merged_relation.create_with(r.create_with_value) if r.create_with_value + # Apply scope extension modules merged_relation.send :apply_modules, r.extensions @@ -94,7 +100,7 @@ module ActiveRecord options.assert_valid_keys(VALID_FIND_OPTIONS) finders = options.dup - finders.delete_if { |key, value| value.nil? } + finders.delete_if { |key, value| value.nil? && key != :limit } ([:joins, :select, :group, :order, :having, :limit, :offset, :from, :lock, :readonly] & finders.keys).each do |finder| relation = relation.send(finder, finders[finder]) |