Class: ActiveSet::AttributeInstruction

Inherits:
Object
  • Object
show all
Defined in:
lib/active_set/attribute_instruction.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(keypath, value) ⇒ AttributeInstruction

Returns a new instance of AttributeInstruction.



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# File 'lib/active_set/attribute_instruction.rb', line 8

def initialize(keypath, value)
  # `keypath` can be an Array (e.g. [:parent, :child, :grandchild, :attribute])
  # or a String (e.g. 'parent.child.grandchild.attribute')
  @keypath = Array(keypath).map(&:to_s).flat_map { |x| x.split('.') }
  @value = value
  @processed = false
end

Instance Attribute Details

#keypath ⇒ Object (readonly)

Returns the value of attribute keypath.



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# File 'lib/active_set/attribute_instruction.rb', line 6

def keypath
  @keypath
end

#processed ⇒ Object

Returns the value of attribute processed.



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# File 'lib/active_set/attribute_instruction.rb', line 5

def processed
  @processed
end

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/active_set/attribute_instruction.rb', line 6

def value
  @value
end

Instance Method Details

#associations_array ⇒ Object 



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# File 'lib/active_set/attribute_instruction.rb', line 34

def associations_array
  return [] unless @keypath.any?

  @keypath.slice(0, @keypath.length - 1)
end

#associations_hash ⇒ Object 



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# File 'lib/active_set/attribute_instruction.rb', line 40

def associations_hash
  return {} unless @keypath.any?

  associations_array.reverse.reduce({}) do |hash, association|
    { association => hash }
  end
end

#attribute ⇒ Object 



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# File 'lib/active_set/attribute_instruction.rb', line 20

def attribute
  attribute = @keypath.last
  return attribute.sub(operator_regex, '') if attribute&.match operator_regex

  attribute
end

#operator(default: '==') ⇒ Object 



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# File 'lib/active_set/attribute_instruction.rb', line 27

def operator(default: '==')
  attribute = @keypath.last
  return attribute[operator_regex, 1] if attribute&.match operator_regex

  default
end

#processed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_set/attribute_instruction.rb', line 16

def processed?
  @processed
end

#resource_for(item:) ⇒ Object 



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# File 'lib/active_set/attribute_instruction.rb', line 56

def resource_for(item:)
  associations_array.reduce(item) do |resource, association|
    return nil unless resource.respond_to? association

    resource.public_send(association)
  end
rescue StandardError
  # :nocov:
  nil
  # :nocov:
end

#value_for(item:) ⇒ Object 



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# File 'lib/active_set/attribute_instruction.rb', line 48

def value_for(item:)
  resource_for(item: item).public_send(attribute)
rescue StandardError
  # :nocov:
  nil
  # :nocov:
end