Class: SessionAttributes

Inherits:
Object
  • Object
show all
Includes:
ActiveSupport::Callbacks
Defined in:
lib/session_attributes.rb

Constant Summary collapse

INVALID_ATTRIBUTE_NAMES =

:nodoc:

[:set, :reset, :resets, :instance, :before_reset, :after_reset, :reset_all, :clear_all]

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SessionAttributes

Returns a new instance of SessionAttributes.



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# File 'lib/session_attributes.rb', line 121

def initialize
  @attributes = resolve_defaults
end

Class Method Details

.attribute(*names, default: nil) ⇒ Object 



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# File 'lib/session_attributes.rb', line 20

def attribute(*names, default: nil)
  invalid_attribute_names = names.map(&:to_sym) & INVALID_ATTRIBUTE_NAMES
  if invalid_attribute_names.any?
    raise ArgumentError, "Restricted attribute names: #{invalid_attribute_names.join(", ")}"
  end

  ActiveSupport::CodeGenerator.batch(generated_attribute_methods, __FILE__, __LINE__) do |owner|
    names.each do |name|
      owner.define_cached_method(name, namespace: :session_attributes) do |batch|
        batch <<
          "def #{name}" <<
          "attributes[:#{name}]" <<
          "end"
      end
      owner.define_cached_method("#{name}=", namespace: :session_attributes) do |batch|
        batch <<
          "def #{name}=(value)" <<
          "attributes[:#{name}] = value" <<
          "end"
      end
    end
  end

  ActiveSupport::Delegation.generate(singleton_class, names, to: :instance, nilable: false, signature: "")
  ActiveSupport::Delegation.generate(singleton_class, names.map { |n| "#{n}=" }, to: :instance, nilable: false, signature: "value")

  self.defaults = defaults.merge(names.index_with { default })
end

.attributes ⇒ Object 



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# File 'lib/session_attributes.rb', line 74

def attributes
  session_instances[session_instances_key] ||= {}
  session_instances[session_instances_key][:attributes] ||= {}
end

.attributes=(attrs) ⇒ Object 



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# File 'lib/session_attributes.rb', line 69

def attributes=(attrs)
  session_instances[session_instances_key] ||= {}
  session_instances[session_instances_key][:attributes] = attrs
end

.before_reset(*methods) ⇒ Object 



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# File 'lib/session_attributes.rb', line 49

def before_reset(*methods, &)
  set_callback(:reset, :before, *methods, &)
end

.clear_all ⇒ Object

:nodoc:



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# File 'lib/session_attributes.rb', line 64

def clear_all # :nodoc:
  reset_all
  session_instances.clear
end

.instance ⇒ Object 



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# File 'lib/session_attributes.rb', line 16

def instance
  new
end

.reset_all ⇒ Object

:nodoc:



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# File 'lib/session_attributes.rb', line 60

def reset_all # :nodoc:
  session_instances.each_value(&:reset)
end

.resets(*methods) ⇒ Object Also known as: after_reset 



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# File 'lib/session_attributes.rb', line 53

def resets(*methods, &)
  set_callback(:reset, :after, *methods, &)
end

.respond_to_missing?(name, _) ⇒ Boolean

:nodoc: I had to move this to a self. method because it was erroring out with stack level too deep

Returns:

  • (Boolean) 


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# File 'lib/session_attributes.rb', line 115

def self.respond_to_missing?(name, _)
  instance.respond_to?(name)
end

Instance Method Details

#reset ⇒ Object 



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# File 'lib/session_attributes.rb', line 129

def reset
  run_callbacks :reset do
    self.attributes = resolve_defaults
  end
end

#resolve_defaults ⇒ Object 



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# File 'lib/session_attributes.rb', line 107

def resolve_defaults
  defaults.transform_values do |value|
    (Proc === value) ? value.call : value.dup
  end
end

#set(attributes) ⇒ Object 



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# File 'lib/session_attributes.rb', line 125

def set(attributes, &)
  with(**attributes, &)
end