Module: MotionModel::Validatable
- Defined in:
- lib/motion_model/validatable.rb
Defined Under Namespace
Modules: ClassMethods Classes: RecordInvalid, ValidationSpecificationError
Class Method Summary collapse
Instance Method Summary collapse
-
#add_message(field, message) ⇒ Object
Add a message for
field
to the messages collection. -
#each_validation_for(field) ⇒ Object
nodoc.
-
#error_messages ⇒ Object
Raw array of hashes of error messages.
-
#error_messages_for(field) ⇒ Object
Array of messages for a given field.
-
#save(options = { :validate => true}) ⇒ Object
It doesn’t save when validations fails.
-
#save! ⇒ Object
it fails loudly.
-
#valid? ⇒ Boolean
This has two functions:.
-
#validate_each(validations) ⇒ Object
nodoc.
- #validate_email(field, value, setting) ⇒ Object
-
#validate_for(field, value) ⇒ Object
Validates an arbitrary string against a specific field’s validators.
-
#validate_format(field, value, setting) ⇒ Object
Validates contents of field against a given Regexp.
-
#validate_length(field, value, setting) ⇒ Object
Validates that the length is in a given range of characters.
-
#validate_one(field, validation) ⇒ Object
nodoc.
-
#validate_presence(field, value, setting) ⇒ Object
Validates that something has been endntered in a field.
-
#validation_method(validation_type) ⇒ Object
nodoc.
Class Method Details
.included(base) ⇒ Object
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# File 'lib/motion_model/validatable.rb', line 7 def self.included(base) base.extend(ClassMethods) base.instance_variable_set('@validations', []) end |
Instance Method Details
#add_message(field, message) ⇒ Object
Add a message for field
to the messages collection.
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# File 'lib/motion_model/validatable.rb', line 167 def (field, ) @messages.push({field.to_sym => }) end |
#each_validation_for(field) ⇒ Object
nodoc
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# File 'lib/motion_model/validatable.rb', line 82 def each_validation_for(field) #nodoc self.class.validations.select{|validation| validation.has_key?(field)}.each do |validation| validation.each_pair do |field, validation_hash| yield validation_hash end end end |
#error_messages ⇒ Object
Raw array of hashes of error messages.
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# File 'lib/motion_model/validatable.rb', line 61 def @messages end |
#error_messages_for(field) ⇒ Object
Array of messages for a given field. Results are always an array because a field can fail multiple validations.
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# File 'lib/motion_model/validatable.rb', line 67 def (field) key = field.to_sym .select{|| .has_key?(key)}.map{|| [key]} end |
#save(options = { :validate => true}) ⇒ Object
It doesn’t save when validations fails
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# File 'lib/motion_model/validatable.rb', line 36 def save(={ :validate => true}) (valid? || ![:validate]) ? super : false end |
#save! ⇒ Object
it fails loudly
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# File 'lib/motion_model/validatable.rb', line 41 def save! raise RecordInvalid.new('failed validation') unless valid? save end |
#valid? ⇒ Boolean
This has two functions:
-
First, it triggers validations.
-
Second, it returns the result of performing the validations.
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# File 'lib/motion_model/validatable.rb', line 51 def valid? @messages = [] @valid = true self.class.validations.each do |validations| validate_each(validations) end @valid end |
#validate_each(validations) ⇒ Object
nodoc
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# File 'lib/motion_model/validatable.rb', line 72 def validate_each(validations) #nodoc validations.each_pair do |field, validation| @valid &&= validate_one field, validation end end |
#validate_email(field, value, setting) ⇒ Object
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# File 'lib/motion_model/validatable.rb', line 150 def validate_email(field, value, setting) if value.is_a?(String) || value.nil? result = value.nil? || value.match(/\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i).nil? (field, "#{field.to_s} does not appear to be an email address.") if result end return !result end |
#validate_for(field, value) ⇒ Object
Validates an arbitrary string against a specific field’s validators. Useful before setting the value of a model’s field. I.e., you get data from a form, do a validate_for(:my_field, that_data)
and if it succeeds, you do obj.my_field = that_data
.
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# File 'lib/motion_model/validatable.rb', line 94 def validate_for(field, value) @messages = [] key = field.to_sym result = true each_validation_for(key) do |validation| validation.each_pair do |validation_type, setting| method = validation_method(validation_type) if self.respond_to? method value.strip! if value.is_a?(String) result &&= self.send(method, field, value, setting) end end end result end |
#validate_format(field, value, setting) ⇒ Object
Validates contents of field against a given Regexp. This can be tricky because you need to anchor both sides in most cases using A and Z to get a reliable match.
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# File 'lib/motion_model/validatable.rb', line 160 def validate_format(field, value, setting) result = value.nil? || setting.match(value).nil? (field, "#{field.to_s} does not appear to be in the proper format.") if result return !result end |
#validate_length(field, value, setting) ⇒ Object
Validates that the length is in a given range of characters. E.g.,
validate :name, :length => 5..8
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# File 'lib/motion_model/validatable.rb', line 141 def validate_length(field, value, setting) if value.is_a?(String) || value.nil? result = value.nil? || (value.length < setting.first || value.length > setting.last) (field, "incorrect value supplied for #{field.to_s} -- should be between #{setting.first} and #{setting.last} characters long.") if result return !result end return false end |
#validate_one(field, validation) ⇒ Object
nodoc
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# File 'lib/motion_model/validatable.rb', line 110 def validate_one(field, validation) #nodoc result = true validation.each_pair do |validation_type, setting| if self.respond_to? validation_method(validation_type) value = self.send(field) result &&= self.send(validation_method(validation_type), field, value.is_a?(String) ? value.strip : value, setting) else ex = ValidationSpecificationError.new("unknown validation type :#{validation_type.to_s}") end end result end |
#validate_presence(field, value, setting) ⇒ Object
Validates that something has been endntered in a field. Should catch Fixnums, Bignums and Floats. Nils and Strings should be handled as well, Arrays, Hashes and other datatypes will not.
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# File 'lib/motion_model/validatable.rb', line 126 def validate_presence(field, value, setting) if(value.is_a?(Numeric)) return true elsif value.is_a?(String) || value.nil? result = value.nil? || ((value.length == 0) == setting) = setting ? "non-empty" : "non-empty" (field, "incorrect value supplied for #{field.to_s.humanize} -- should be #{}.") if result return !result end return false end |
#validation_method(validation_type) ⇒ Object
nodoc
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# File 'lib/motion_model/validatable.rb', line 78 def validation_method(validation_type) #nodoc validation_method = "validate_#{validation_type}".to_sym end |