Class: Taksi::Components::Field

Inherits:
Object
  • Object
show all
Defined in:
lib/taksi/components/field.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(skeleton, name, *args, parent: nil, &block) ⇒ Field

Returns a new instance of Field.



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# File 'lib/taksi/components/field.rb', line 8

def initialize(skeleton, name, *args, parent: nil, &block)
  @skeleton = skeleton
  @name = name.to_sym
  @parent = parent

  @value = args.shift.new(skeleton, name, *args) if args.size.positive?
  @nested_fields = []

  instance_exec(&block) if block_given?
  @defined = true
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object 



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# File 'lib/taksi/components/field.rb', line 62

def method_missing(name, *args, &block)
  return super if @defined

  @nested_fields << self.class.new(skeleton, name, *args, parent: self, &block)
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/taksi/components/field.rb', line 6

def name
  @name
end

#parent ⇒ Object (readonly)

Returns the value of attribute parent.



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# File 'lib/taksi/components/field.rb', line 6

def parent
  @parent
end

#skeleton ⇒ Object (readonly)

Returns the value of attribute skeleton.



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# File 'lib/taksi/components/field.rb', line 6

def skeleton
  @skeleton
end

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/taksi/components/field.rb', line 6

def value
  @value
end

Instance Method Details

#as_json ⇒ Object 



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# File 'lib/taksi/components/field.rb', line 36

def as_json
  return {name => @nested_fields.map(&:as_json).inject({}, &:merge)} if nested?

  {name => value.as_json}
end

#fetch_from(data) ⇒ Object 



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# File 'lib/taksi/components/field.rb', line 26

def fetch_from(data)
  return value.as_json if value.static?

  return data[name] if parent.nil? || parent.root?

  parent.fetch_from(data)[name]
rescue NoMethodError
  raise NameError, "Couldn't fetch #{key.inspect} from data: #{data.inspect}"
end

#fields ⇒ Object 



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# File 'lib/taksi/components/field.rb', line 42

def fields
  Enumerator.new do |yielder|
    @nested_fields.each do |field|
      if field.nested?
        field.fields.each(&yielder)
      else
        yielder << field
      end
    end
  end
end

#key ⇒ Object 



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# File 'lib/taksi/components/field.rb', line 20

def key
  return name if parent.nil? || parent.root?

  "#{parent.name}.#{name}"
end

#nested? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/taksi/components/field.rb', line 54

def nested?
  @value.nil?
end

#respond_to_missing?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/taksi/components/field.rb', line 68

def respond_to_missing?(name)
  return super if @defined

  true
end

#root? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/taksi/components/field.rb', line 58

def root?
  @parent.nil?
end