diff options
Diffstat (limited to 'activerecord/lib/active_record/relation')
4 files changed, 58 insertions, 19 deletions
diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb index 4f60704790..64e1ff9a6a 100644 --- a/activerecord/lib/active_record/relation/calculations.rb +++ b/activerecord/lib/active_record/relation/calculations.rb @@ -82,7 +82,7 @@ module ActiveRecord # puts values["Drake"] # # => 43 # - # drake = Family.find_by_last_name('Drake') + # drake = Family.find_by(last_name: 'Drake') # values = Person.group(:family).maximum(:age) # Person belongs_to :family # puts values[drake] # # => 43 diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb index e2685d0478..72e9272cd7 100644 --- a/activerecord/lib/active_record/relation/finder_methods.rb +++ b/activerecord/lib/active_record/relation/finder_methods.rb @@ -130,8 +130,8 @@ module ActiveRecord last or raise RecordNotFound end - # Returns +true+ if a record exists in the table that matches the +id+ or - # conditions given, or +false+ otherwise. The argument can take six forms: + # Returns truthy if a record exists in the table that matches the +id+ or + # conditions given, or falsy otherwise. The argument can take six forms: # # * Integer - Finds the record with this primary key. # * String - Finds the record with a primary key corresponding to this @@ -176,6 +176,28 @@ module ActiveRecord false end + # This method is called whenever no records are found with either a single + # id or multiple ids and raises a +ActiveRecord::RecordNotFound+ exception. + # + # The error message is different depending on whether a single id or + # multiple ids are provided. If multiple ids are provided, then the number + # of results obtained should be provided in the +result_size+ argument and + # the expected number of results should be provided in the +expected_size+ + # argument. + def raise_record_not_found_exception!(ids, result_size, expected_size) #:nodoc: + conditions = arel.where_sql + conditions = " [#{conditions}]" if conditions + + if Array(ids).size == 1 + error = "Couldn't find #{@klass.name} with #{primary_key}=#{ids}#{conditions}" + else + error = "Couldn't find all #{@klass.name.pluralize} with IDs " + error << "(#{ids.join(", ")})#{conditions} (found #{result_size} results, but was looking for #{expected_size})" + end + + raise RecordNotFound, error + end + protected def find_with_associations @@ -259,11 +281,7 @@ module ActiveRecord relation.bind_values += [[column, id]] record = relation.take - unless record - conditions = arel.where_sql - conditions = " [#{conditions}]" if conditions - raise RecordNotFound, "Couldn't find #{@klass.name} with #{primary_key}=#{id}#{conditions}" - end + raise_record_not_found_exception!(id, 0, 1) unless record record end @@ -286,12 +304,7 @@ module ActiveRecord if result.size == expected_size result else - conditions = arel.where_sql - conditions = " [#{conditions}]" if conditions - - error = "Couldn't find all #{@klass.name.pluralize} with IDs " - error << "(#{ids.join(", ")})#{conditions} (found #{result.size} results, but was looking for #{expected_size})" - raise RecordNotFound, error + raise_record_not_found_exception!(ids, result.size, expected_size) end end diff --git a/activerecord/lib/active_record/relation/merger.rb b/activerecord/lib/active_record/relation/merger.rb index eb23e92fb8..936b83261e 100644 --- a/activerecord/lib/active_record/relation/merger.rb +++ b/activerecord/lib/active_record/relation/merger.rb @@ -39,7 +39,7 @@ module ActiveRecord end class Merger # :nodoc: - attr_reader :relation, :values + attr_reader :relation, :values, :other def initialize(relation, other) if other.default_scoped? && other.klass != relation.klass @@ -48,11 +48,12 @@ module ActiveRecord @relation = relation @values = other.values + @other = other end NORMAL_VALUES = Relation::SINGLE_VALUE_METHODS + Relation::MULTI_VALUE_METHODS - - [:where, :order, :bind, :reverse_order, :lock, :create_with, :reordering, :from] # :nodoc: + [:joins, :where, :order, :bind, :reverse_order, :lock, :create_with, :reordering, :from] # :nodoc: def normal_values NORMAL_VALUES @@ -66,12 +67,39 @@ module ActiveRecord merge_multi_values merge_single_values + merge_joins relation end private + def merge_joins + return if values[:joins].blank? + + if other.klass == relation.klass + relation.joins!(*values[:joins]) + else + joins_dependency, rest = values[:joins].partition do |join| + case join + when Hash, Symbol, Array + true + else + false + end + end + + join_dependency = ActiveRecord::Associations::JoinDependency.new(other.klass, + joins_dependency, + []) + relation.joins! rest + + join_dependency.join_associations.each do |association| + @relation = association.join_relation(relation) + end + end + end + def merge_multi_values relation.where_values = merged_wheres relation.bind_values = merged_binds diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 7a9225da53..6ee3711052 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -933,9 +933,7 @@ module ActiveRecord association_joins = buckets[:association_join] || [] stashed_association_joins = buckets[:stashed_join] || [] join_nodes = (buckets[:join_node] || []).uniq - string_joins = (buckets[:string_join] || []).map { |x| - x.strip - }.uniq + string_joins = (buckets[:string_join] || []).map { |x| x.strip }.uniq join_list = join_nodes + custom_join_ast(manager, string_joins) |