Class: ActiveRecord::Validations::DatabaseConstraintsValidator
- Inherits:
-
ActiveModel::EachValidator
- Object
- ActiveModel::EachValidator
- ActiveRecord::Validations::DatabaseConstraintsValidator
- Defined in:
- lib/active_record/validations/database_constraints.rb
Constant Summary collapse
- VALID_CONSTRAINTS =
Set[:size, :basic_multilingual_plane, :not_null, :range]
- SIZE_VALIDATORS_FOR_TYPE =
{ characters: ActiveModel::Validations::LengthValidator, bytes: ActiveModel::Validations::BytesizeValidator, }
Instance Attribute Summary collapse
-
#constraints ⇒ Object
readonly
Returns the value of attribute constraints.
Instance Method Summary collapse
- #attribute_validators(klass, attribute) ⇒ Object
- #basic_multilingual_plane_validator(klass, column) ⇒ Object
- #check_validity! ⇒ Object
-
#initialize(options = {}) ⇒ DatabaseConstraintsValidator
constructor
A new instance of DatabaseConstraintsValidator.
- #not_null_validator(klass, column) ⇒ Object
- #range_validator(klass, column) ⇒ Object
- #size_validator(klass, column) ⇒ Object
- #validate_each(record, attribute, _value) ⇒ Object
Constructor Details
#initialize(options = {}) ⇒ DatabaseConstraintsValidator
Returns a new instance of DatabaseConstraintsValidator.
17 18 19 20 21 |
# File 'lib/active_record/validations/database_constraints.rb', line 17 def initialize( = {}) @constraints = Set.new(Array.wrap([:in]) + Array.wrap([:with])) @constraint_validators = {} super end |
Instance Attribute Details
#constraints ⇒ Object (readonly)
Returns the value of attribute constraints.
8 9 10 |
# File 'lib/active_record/validations/database_constraints.rb', line 8 def constraints @constraints end |
Instance Method Details
#attribute_validators(klass, attribute) ⇒ Object
64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 |
# File 'lib/active_record/validations/database_constraints.rb', line 64 def attribute_validators(klass, attribute) @constraint_validators[attribute] ||= begin column_definition = klass.columns_hash[attribute.to_s] unless column_definition raise ArgumentError.new("Model #{klass.name} does not have column #{attribute.to_s}!") end column = ActiveRecord::Validations::TypedColumn.new(column_definition) [ not_null_validator(klass, column), size_validator(klass, column), basic_multilingual_plane_validator(klass, column), range_validator(klass, column), ].compact end end |
#basic_multilingual_plane_validator(klass, column) ⇒ Object
58 59 60 61 62 |
# File 'lib/active_record/validations/database_constraints.rb', line 58 def basic_multilingual_plane_validator(klass, column) return unless constraints.include?(:basic_multilingual_plane) return unless column.text? && column.collation =~ /\Autf8(?:mb3)?_/ ActiveModel::Validations::BasicMultilingualPlaneValidator.new(attributes: [column.name.to_sym], class: klass) end |
#check_validity! ⇒ Object
23 24 25 26 27 28 |
# File 'lib/active_record/validations/database_constraints.rb', line 23 def check_validity! invalid_constraints = constraints - VALID_CONSTRAINTS raise ArgumentError, "You have to specify what constraints to validate for." if constraints.empty? raise ArgumentError, "#{invalid_constraints.map(&:inspect).join(',')} is not a valid constraint." unless invalid_constraints.empty? end |
#not_null_validator(klass, column) ⇒ Object
30 31 32 33 34 35 |
# File 'lib/active_record/validations/database_constraints.rb', line 30 def not_null_validator(klass, column) return unless constraints.include?(:not_null) return if column.null ActiveModel::Validations::NotNullValidator.new(attributes: [column.name.to_sym], class: klass) end |
#range_validator(klass, column) ⇒ Object
49 50 51 52 53 54 55 56 |
# File 'lib/active_record/validations/database_constraints.rb', line 49 def range_validator(klass, column) return unless constraints.include?(:range) return unless column.number? args = { attributes: [column.name.to_sym], class: klass, allow_nil: true } args.merge!(ActiveRecord::DatabaseValidations::MySQL.column_range(column)) ActiveModel::Validations::NumericalityValidator.new(args) end |
#size_validator(klass, column) ⇒ Object
37 38 39 40 41 42 43 44 45 46 47 |
# File 'lib/active_record/validations/database_constraints.rb', line 37 def size_validator(klass, column) return unless constraints.include?(:size) return unless column.text? || column.binary? maximum, type, encoding = ActiveRecord::DatabaseValidations::MySQL.column_size_limit(column) validator_class = SIZE_VALIDATORS_FOR_TYPE[type] if validator_class && maximum validator_class.new(attributes: [column.name.to_sym], class: klass, maximum: maximum, encoding: encoding) end end |
#validate_each(record, attribute, _value) ⇒ Object
83 84 85 86 87 |
# File 'lib/active_record/validations/database_constraints.rb', line 83 def validate_each(record, attribute, _value) attribute_validators(record.class, attribute).each do |validator| validator.validate(record) end end |