Module: DynamicValidations::Validations

Defined in:
lib/dynamic_validations/validations.rb

Constant Summary collapse

DEFAULT_VALIDATION_OPTIONS = 
{
  :on => :save,
  :allow_nil => false,
  :allow_blank => false,
  :message => nil
}.freeze
ALL_RANGE_OPTIONS = 
[ :is, :within, :in, :minimum, :maximum ].freeze
ALL_NUMERICALITY_CHECKS = 
{ :greater_than => '>', :greater_than_or_equal_to => '>=',
:equal_to => '==', :less_than => '<', :less_than_or_equal_to => '<=',
:odd => 'odd?', :even => 'even?' }.freeze

Instance Method Summary collapse

Instance Method Details

#validate ⇒ Object 



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# File 'lib/dynamic_validations/validations.rb', line 15

def validate
  validation_rules = ValidationRule.find( :all, :conditions => { :is_active => true, :account_id => self., 
    :entity_type => self.class.name }, :order => "attribute, validation", :select => "id, attribute, validation, description, message" )

  #validation_rules.group_by(&:validation).each do |validation, validation_rules|
  validation_rules.each do |validation_rule|
    desc = YAML.load( validation_rule.description ) unless validation_rule.description.nil?
    if desc.nil?
      self.send( "validate_#{validation_rule.validation}".to_sym, validation_rule.attribute )
    else
      self.send( "validate_#{validation_rule.validation}".to_sym, validation_rule.attribute, desc )
    end
    #self.send( "validate_#{validation}".to_sym, *(validation_rules.map { |rule| rule.attribute }) )
  end
end

#validate_length(*args) ⇒ Object 



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# File 'lib/dynamic_validations/validations.rb', line 37

def validate_length( *args )
  # Merge given options with defaults.
  options = {
    :tokenizer => lambda {|value| value.split(//)}
  }.merge(DEFAULT_VALIDATION_OPTIONS)
  options.update(args.extract_options!.symbolize_keys)
  attr = args[0]
  
  # Ensure that one and only one range option is specified.
  range_options = ALL_RANGE_OPTIONS & options.keys
  case range_options.size
    when 0
      raise ArgumentError, 'Range unspecified.  Specify the :within, :maximum, :minimum, or :is option.'
    when 1
      # Valid number of options; do nothing.
    else
      raise ArgumentError, 'Too many range options specified.  Choose only one.'
  end

  # Get range option and value.
  option = range_options.first
  option_value = options[range_options.first]
  key = {:is => :wrong_length, :minimum => :too_short, :maximum => :too_long}[option]
  custom_message = options[:message] || options[key]
  value = self.send( "#{attr}".to_sym )
  
  case option
    when :within, :in
      raise ArgumentError, ":#{option} must be a Range" unless option_value.is_a?( Range )

      #self.class.validates_each(attrs, options) do |record, attr, value|
        value = options[:tokenizer].call( value ) if value.kind_of?( String )
        if value.nil? or value.size < option_value.begin.to_i
          self.errors.add( attr, :too_short, :default => custom_message || options[:too_short], :count => option_value.begin )
        elsif value.size > option_value.end.to_i
          self.errors.add( attr, :too_long, :default => custom_message || options[:too_long], :count => option_value.end )
        end
      #end
    when :is, :minimum, :maximum
      raise ArgumentError, ":#{option} must be a nonnegative Integer" unless option_value.is_a?( Integer ) and option_value >= 0

      # Declare different validations per option.
      validity_checks = { :is => "==", :minimum => ">=", :maximum => "<=" }

      #self.class.validates_each(attrs, options) do |record, attr, value|
        value = options[:tokenizer].call( value ) if value.kind_of?( String )
        unless !value.nil? and value.size.method( validity_checks[option] )[option_value]
          self.errors.add( attr, key, :default => custom_message, :count => option_value ) 
        end
      #end
  end
end

#validate_numericality(*args) ⇒ Object

def validate_length



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# File 'lib/dynamic_validations/validations.rb', line 90

def validate_numericality( *args )
  configuration = { :on => :save, :only_integer => false, :allow_nil => false }
  configuration.update( args.extract_options!.symbolize_keys )
  attr_name = args[0]
  
  numericality_options = ALL_NUMERICALITY_CHECKS.keys & configuration.keys

  (numericality_options - [ :odd, :even ]).each do |option|
    raise ArgumentError, ":#{option} must be a number" unless configuration[option].is_a?( Numeric )
  end

  raw_value = self.send( "#{attr_name}_before_type_cast" ) || value

  return if configuration[:allow_nil] and raw_value.nil?

  if configuration[:only_integer]
    unless raw_value.to_s =~ /\A[+-]?\d+\Z/
      msg = DYNAMIC_VALIDATIONS_CONFIG[:messages][:numericality][:not_an_integer] || configuration[:message] || "must be an integer"
      self.errors.add( attr_name, :not_a_number, :value => raw_value, :default => msg )
      return
    end
    raw_value = raw_value.to_i
  else
    begin
      raw_value = Kernel.Float( raw_value )
    rescue ArgumentError, TypeError
      msg = DYNAMIC_VALIDATIONS_CONFIG[:messages][:numericality][:not_a_number] || configuration[:message] || "must be a number"
      self.errors.add( attr_name, :not_a_number, :value => raw_value, :default => msg )
      return
    end
  end

  numericality_options.each do |option|
    case option
      when :odd
        unless raw_value.to_i.method( ALL_NUMERICALITY_CHECKS[option] )[]
          msg = DYNAMIC_VALIDATIONS_CONFIG[:messages][:numericality][:even_number] || configuration[:message] || "must be an odd number"
          self.errors.add( attr_name, option, :value => raw_value, :default => msg ) 
        end
      when :even
        unless raw_value.to_i.method( ALL_NUMERICALITY_CHECKS[option] )[]
          msg = DYNAMIC_VALIDATIONS_CONFIG[:messages][:numericality][:odd_number] || configuration[:message] || "must be an even number"
          self.errors.add( attr_name, option, :value => raw_value, :default => msg ) 
        end
      when :greater_than
        unless raw_value.to_i > configuration[:greater_than]
          self.errors.add( attr_name, option, :value => raw_value, :default => "must be a number greater than #{configuration[:greater_than].to_s}" )
        end
      when :greater_than_or_equal_to
        unless raw_value.to_i >= configuration[:greater_than_or_equal_to]
          self.errors.add( attr_name, option, :value => raw_value, :default => "must be a number greater than #{configuration[:greater_than_or_equal_to].to_s}" )
        end
      when :less_than
        unless raw_value.to_i < configuration[:less_than]
          self.errors.add( attr_name, option, :value => raw_value, :default => "must be a number less than #{configuration[:less_than].to_s}" )
        end
      when :less_than_or_equal_to
        unless raw_value.to_i <= configuration[:less_than_or_equal_to]
          self.errors.add( attr_name, option, :value => raw_value, :default => "must be a number less than #{configuration[:less_than_or_equal_to].to_s}" )
        end
      else
        msg = DYNAMIC_VALIDATIONS_CONFIG[:messages][:numericality][:not_a_number] || configuration[:message] || "must be a number"
        self.errors.add( attr_name, option, :default => configuration[:message], :value => raw_value, :count => configuration[option] ) unless raw_value.method( ALL_NUMERICALITY_CHECKS[option] )[configuration[option]]
    end
  end
end

#validate_presence(*args) ⇒ Object 



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# File 'lib/dynamic_validations/validations.rb', line 31

def validate_presence( *args )
  options = args.extract_options!
  attrs = args
  self.errors.add_on_blank( attrs, DYNAMIC_VALIDATIONS_CONFIG[:messages][:presence] || "cannot be blank" )
end