Class: HungryForm::Elements::Base::ActiveElement

Inherits:
Element
  • Object
show all
Defined in:
lib/hungryform/elements/base/active_element.rb

Overview

The ActiveElement class is used as a base class for all form fields that can contain values and be validated

Direct Known Subclasses

OptionsElement, CheckboxField, TextArea, TextField

Instance Attribute Summary collapse

Attributes inherited from Element

#attributes, #dependency, #label, #name, #placeholders, #resolver, #visible

Instance Method Summary collapse

Methods inherited from Element

#dependency_json

Methods included from Hashable

included, #to_hash

Constructor Details

#initialize(name, parent, resolver, attributes = {}, &block) ⇒ ActiveElement

Returns a new instance of ActiveElement.



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# File 'lib/hungryform/elements/base/active_element.rb', line 12

def initialize(name, parent, resolver, attributes = {}, &block)
  super

  clear_error

  if parent.visible?
    self.required = @attributes[:required] || false
  else
    self.required = false
  end

  # Determine validation attributes
  # They can be only the methods of the HungryForm::Validator class
  # or methods of the Validator module of the current class 
  methods = HungryForm::Validator.singleton_class.instance_methods(false)
  if self.class.const_defined?(:Validator)
    methods += self.class.const_get(:Validator).instance_methods(false)
  end

  @validation_rules = @attributes.select { |key, _| methods.include?(key) }
  @attributes.delete_if { |key, _| @validation_rules.key?(key) }

  set_value
end

Instance Attribute Details

#error ⇒ Object

Returns the value of attribute error.



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# File 'lib/hungryform/elements/base/active_element.rb', line 7

def error
  @error
end

#required ⇒ Object Also known as: required?

Returns the value of attribute required.



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# File 'lib/hungryform/elements/base/active_element.rb', line 7

def required
  @required
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/hungryform/elements/base/active_element.rb', line 7

def value
  @value
end

Instance Method Details

#clear_error ⇒ Object 



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# File 'lib/hungryform/elements/base/active_element.rb', line 86

def clear_error
  self.error = ''
end

#invalid? ⇒ Boolean

Element invalid? Performs elemen validation

Returns:

  • (Boolean) 


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# File 'lib/hungryform/elements/base/active_element.rb', line 57

def invalid?
  !valid?
end

#set_value ⇒ Object 



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# File 'lib/hungryform/elements/base/active_element.rb', line 82

def set_value
  self.value = resolver.params[name] || attributes.delete(:value)
end

#valid? ⇒ Boolean

Element valid? Performs element validation

Returns:

  • (Boolean) 


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# File 'lib/hungryform/elements/base/active_element.rb', line 39

def valid?
  clear_error
  return true unless visible?

  @validation_rules.each do |key, rule|
    validate_rule(key, rule)

    unless error.empty?
      self.error = "This field #{error}"
      return false
    end
  end

  true
end

#validate_rule(attribute, rule) ⇒ Object

Validate a particular validation rule Searches for the validation attribute in the Validator module of the element’s class or in the global Validator module

Sample: text_field :txt, :required => true will search for the “required” singleton method in the HungryForm::Elements::TextField::Validator and in the HungryGorm::Validator



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# File 'lib/hungryform/elements/base/active_element.rb', line 70

def validate_rule(attribute, rule)
  if self.class.const_defined?(:Validator)
    validator = self.class.const_get(:Validator)
  end
  
  if validator.nil? || !validator.singleton_class.instance_methods(false).include?(attribute)
    validator = HungryForm::Validator
  end

  self.error = validator.send(attribute, self, rule) || ''
end