diff options
Diffstat (limited to 'activerecord/lib/active_record/relation/finder_methods.rb')
| -rw-r--r-- | activerecord/lib/active_record/relation/finder_methods.rb | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb index 8cef4e5554..7eeb3dde70 100644 --- a/activerecord/lib/active_record/relation/finder_methods.rb +++ b/activerecord/lib/active_record/relation/finder_methods.rb @@ -114,7 +114,7 @@ module ActiveRecord def first(*args) if args.any? if args.first.kind_of?(Integer) || (loaded? && !args.first.kind_of?(Hash)) - to_a.first(*args) + limit(*args).to_a else apply_finder_options(args.first).first end @@ -134,7 +134,11 @@ module ActiveRecord def last(*args) if args.any? if args.first.kind_of?(Integer) || (loaded? && !args.first.kind_of?(Hash)) - to_a.last(*args) + if order_values.empty? && reorder_value.nil? + order("#{primary_key} DESC").limit(*args).reverse + else + to_a.last(*args) + end else apply_finder_options(args.first).last end @@ -180,7 +184,9 @@ module ActiveRecord # Person.exists?(:name => "David") # Person.exists?(['name LIKE ?', "%#{query}%"]) # Person.exists? - def exists?(id = nil) + def exists?(id = false) + return false if id.nil? + id = id.id if ActiveRecord::Base === id join_dependency = construct_join_dependency_for_association_find @@ -193,8 +199,8 @@ module ActiveRecord else relation = relation.where(table[primary_key].eq(id)) if id end - - connection.select_value(relation.to_sql, "#{name} Exists") ? true : false + + connection.select_value(relation, "#{name} Exists") ? true : false end protected @@ -202,7 +208,7 @@ module ActiveRecord def find_with_associations join_dependency = construct_join_dependency_for_association_find relation = construct_relation_for_association_find(join_dependency) - rows = connection.select_all(relation.to_sql, 'SQL', relation.bind_values) + rows = connection.select_all(relation, 'SQL', relation.bind_values) join_dependency.instantiate(rows) rescue ThrowResult [] |