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Class: ActiveModel::LazyAttributeSet

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, AttributeSet
Instance Chain:
self, AttributeSet
Inherits: ActiveModel::AttributeSet
Defined in: activemodel/lib/active_model/attribute_set.rb

Class Method Summary

AttributeSet - Inherited

.new

Instance Attribute Summary

AttributeSet - Inherited

#each_value, #except, #fetch, #read_only, #read_only?, #attributes

Instance Method Summary

AttributeSet - Inherited

#==, #[], #[]=, #accessed, #cast_types, #deep_dup, #fetch_value,
#fetch_value!

Like #fetch_value, but raises MissingAttributeError if the attribute is uninitialized.
#freeze,
#include?

Alias for AttributeSet#key?.
#initialize_clone, #initialize_dup, #key?, #keys, #map, #reset, #reverse_merge!,
#to_h

Alias for AttributeSet#to_hash.
#to_hash, #values, #values_before_type_cast, #values_for_database, #write_cast_value, #write_from_database, #write_from_user, #default_attribute

Constructor Details

.new(values, types, additional_types, default_attributes, attributes, default_keys) ⇒ LazyAttributeSet

[ GitHub ] 

  


# File 'activemodel/lib/active_model/attribute_set.rb', line 209



def initialize(values, types, additional_types, default_attributes, attributes, default_keys)
  super(attributes)
  @values = values
  @types = types
  @additional_types = additional_types
  @default_attributes = default_attributes
  @default_keys = default_keys
  @casted_values = values.is_a?(IndexedRow) ? values.new_empty_mutable_row : {}
  @materialized = false
end


  







Instance Attribute Details



  

    #additional_types   (readonly, private)
  

  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/attribute_set.rb', line 309



attr_reader :values, :types, :additional_types, :default_attributes


  








  

    #default_attributes   (readonly, private)
  

  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/attribute_set.rb', line 309



attr_reader :values, :types, :additional_types, :default_attributes


  








  

    #types   (readonly, private)
  

  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/attribute_set.rb', line 309



attr_reader :values, :types, :additional_types, :default_attributes


  








  

    #values   (readonly, private)
  

  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/attribute_set.rb', line 309



attr_reader :values, :types, :additional_types, :default_attributes


  







Instance Method Details



  

    #attributes   (protected)
  

  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/attribute_set.rb', line 289



def attributes
  unless @materialized
    if @attributes.empty?
      values.each_key { |key| self[key] }
      types.each_key { |key| self[key] }
    else
      assigned_attributes = @attributes
      @attributes = {}

      (values.keys | types.keys | assigned_attributes.keys).each do |key|
        @attributes[key] = assigned_attributes[key] || self[key]
      end
    end

    @materialized = true
  end
  @attributes
end


  








  

    #deep_dup  
  

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# File 'activemodel/lib/active_model/attribute_set.rb', line 266



def deep_dup
  LazyAttributeSet.new(
    values.dup,
    types.dup,
    additional_types.dup,
    default_attributes.dup,
    attributes.transform_values(&:deep_dup),
    @default_keys
  )
end


  








  

    #default_attribute(name, value_present = true, value = values.fetch(name) { value_present = false })   (private)
  

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# File 'activemodel/lib/active_model/attribute_set.rb', line 311



def default_attribute(
  name,
  value_present = true,
  value = values.fetch(name) { value_present = false }
)
  type = additional_types.fetch(name, types[name])

  if value_present
    @attributes[name] = Attribute.from_database(name, value, type, @casted_values[name])
  elsif types.key?(name)
    if (@default_keys.nil? || @default_keys.include?(name)) && (attr = default_attributes[name])
      @attributes[name] = attr.dup
    else
      @attributes[name] = Attribute.uninitialized(name, type)
    end
  else
    Attribute.null(name)
  end
end


  








  

    #fetch_value(name, &block)  
  

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# File 'activemodel/lib/active_model/attribute_set.rb', line 229



def fetch_value(name, &block)
  if attr = @attributes[name]
    return attr.value(&block)
  end

  @casted_values.fetch(name) do
    value_present = true
    value = values.fetch(name) { value_present = false }

    if value_present
      type = additional_types.fetch(name, types[name])
      @casted_values[name] = type.deserialize(value)
    else
      attr = default_attribute(name, value_present, value)
      attr.value(&block)
    end
  end
end


  








  

    #fetch_value!(name)  
  

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# File 'activemodel/lib/active_model/attribute_set.rb', line 248



def fetch_value!(name)
  if attr = @attributes[name]
    return attr.value!
  end

  @casted_values.fetch(name) do
    value_present = true
    value = values.fetch(name) { value_present = false }

    if value_present
      type = additional_types.fetch(name, types[name])
      @casted_values[name] = type.deserialize(value)
    else
      default_attribute(name, value_present, value).value!
    end
  end
end


  








  

    #key?(name)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activemodel/lib/active_model/attribute_set.rb', line 220



def key?(name)
  values.key?(name) || ((types.key?(name) || @attributes.key?(name)) && self[name].initialized?)
end


  








  

    #keys  
  

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# File 'activemodel/lib/active_model/attribute_set.rb', line 224



def keys
  keys = values.keys | types.keys | @attributes.keys
  keys.keep_if { |name| self[name].initialized? }
end


  








  

    #map(&block)  
  

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# File 'activemodel/lib/active_model/attribute_set.rb', line 277



def map(&block)
  LazyAttributeSet.new(
    values,
    types,
    additional_types,
    default_attributes,
    attributes.transform_values(&block),
    @default_keys
  )
end