class Mongoid::Validatable::PresenceValidator
Validates that the specified attributes are not blank (as defined by Object#blank?).
@example Define the presence validator.
class Person include Mongoid::Document field :title validates_presence_of :title end
Public Instance Methods
Validate the document for the attribute and value.
@example Validate the document.
validator.validate_each(doc, :title, "")
@param [ Document
] document The document to validate. @param [ Symbol
] attribute The attribute name. @param [ Object
] value The current value of the field.
@since 2.4.0
# File lib/mongoid/validatable/presence.rb, line 28 def validate_each(document, attribute, value) field = document.fields[attribute.to_s] if field.try(:localized?) && !value.blank? value.each_pair do |_locale, _value| document.errors.add( attribute, :blank_in_locale, options.merge(location: _locale) ) if not_present?(_value) end elsif document.relations.has_key?(attribute.to_s) if relation_or_fk_missing?(document, attribute, value) document.errors.add(attribute, :blank, options) end else document.errors.add(attribute, :blank, options) if not_present?(value) end end
Private Instance Methods
For guarding against false values.
@api private
@example Is the value not present?
validator.not_present?(value)
@param [ Object
] value The value.
@return [ true, false ] If the value is not present.
@since 3.0.5
# File lib/mongoid/validatable/presence.rb, line 81 def not_present?(value) value.blank? && value != false end
Returns true if the relation is blank or the foreign key is blank.
@api private
@example Check is the relation or fk is blank.
validator.relation_or_fk_mising(doc, :name, "")
@param [ Document
] doc The document. @param [ Symbol
] attr The attribute. @param [ Object
] value The value.
@return [ true, false ] If the doc is missing.
@since 3.0.0
# File lib/mongoid/validatable/presence.rb, line 63 def relation_or_fk_missing?(doc, attr, value) return true if value.blank? && doc.send(attr).blank? metadata = doc.relations[attr.to_s] metadata.stores_foreign_key? && doc.send(metadata.foreign_key).blank? end