diff options
Diffstat (limited to 'activerecord/lib/active_record/relation.rb')
| -rw-r--r-- | activerecord/lib/active_record/relation.rb | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb index 3821c6122a..b57bd90709 100644 --- a/activerecord/lib/active_record/relation.rb +++ b/activerecord/lib/active_record/relation.rb @@ -296,6 +296,8 @@ module ActiveRecord # # Update all books that match conditions, but limit it to 5 ordered by date # Book.where('title LIKE ?', '%Rails%').order(:created_at).limit(5).update_all(:author => 'David') def update_all(updates) + raise ArgumentError, "Empty list of attributes to change" if updates.blank? + stmt = Arel::UpdateManager.new(arel.engine) stmt.set Arel.sql(@klass.send(:sanitize_sql_for_assignment, updates)) @@ -483,7 +485,7 @@ module ActiveRecord # Returns sql statement for the relation. # # Users.where(name: 'Oscar').to_sql - # # => SELECT "users".* FROM "users" WHERE "users"."name" = 'Oscar' + # # => SELECT "users".* FROM "users" WHERE "users"."name" = 'Oscar' def to_sql @to_sql ||= klass.connection.to_sql(arel, bind_values.dup) end |