diff options
Diffstat (limited to 'activerecord/lib/active_record/validations/uniqueness.rb')
| -rw-r--r-- | activerecord/lib/active_record/validations/uniqueness.rb | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/activerecord/lib/active_record/validations/uniqueness.rb b/activerecord/lib/active_record/validations/uniqueness.rb index bf863c7063..cc3d123cea 100644 --- a/activerecord/lib/active_record/validations/uniqueness.rb +++ b/activerecord/lib/active_record/validations/uniqueness.rb @@ -78,7 +78,7 @@ module ActiveRecord end module ClassMethods - # Validates whether the value of the specified attributes are unique across the system. + # Validates whether the value of the specified attributes are unique across the system. # Useful for making sure that only one user # can be named "davidhh". # @@ -86,16 +86,16 @@ module ActiveRecord # validates_uniqueness_of :user_name, :scope => :account_id # end # - # It can also validate whether the value of the specified attributes are unique based on multiple - # scope parameters. For example, making sure that a teacher can only be on the schedule once + # It can also validate whether the value of the specified attributes are unique based on multiple + # scope parameters. For example, making sure that a teacher can only be on the schedule once # per semester for a particular class. # # class TeacherSchedule < ActiveRecord::Base # validates_uniqueness_of :teacher_id, :scope => [:semester_id, :class_id] # end # - # When the record is created, a check is performed to make sure that no record exists in the database - # with the given value for the specified attribute (that maps to a column). When the record is updated, + # When the record is created, a check is performed to make sure that no record exists in the database + # with the given value for the specified attribute (that maps to a column). When the record is updated, # the same check is made but disregarding the record itself. # # Configuration options: @@ -105,11 +105,11 @@ module ActiveRecord # * <tt>:allow_nil</tt> - If set to true, skips this validation if the attribute is +nil+ (default is +false+). # * <tt>:allow_blank</tt> - If set to true, skips this validation if the attribute is blank (default is +false+). # * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should - # occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). + # occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). # The method, proc or string should return or evaluate to a true or false value. # * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should - # not occur (e.g. <tt>:unless => :skip_validation</tt>, or - # <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The method, proc or string should + # not occur (e.g. <tt>:unless => :skip_validation</tt>, or + # <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The method, proc or string should # return or evaluate to a true or false value. # # === Concurrency and integrity @@ -162,7 +162,7 @@ module ActiveRecord # ActiveRecord::ConnectionAdapters::SchemaStatements#add_index. In the # rare case that a race condition occurs, the database will guarantee # the field's uniqueness. - # + # # When the database catches such a duplicate insertion, # ActiveRecord::Base#save will raise an ActiveRecord::StatementInvalid # exception. You can either choose to let this error propagate (which @@ -171,7 +171,7 @@ module ActiveRecord # that the title already exists, and asking him to re-enter the title). # This technique is also known as optimistic concurrency control: # http://en.wikipedia.org/wiki/Optimistic_concurrency_control - # + # # Active Record currently provides no way to distinguish unique # index constraint errors from other types of database errors, so you # will have to parse the (database-specific) exception message to detect |