Class: Webmate::Presenters::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/webmate/presenters/base.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object, options = {}) ⇒ Base

Returns a new instance of Base.



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# File 'lib/webmate/presenters/base.rb', line 5

def initialize(object, options = {})
  @object, @options = object, options.with_indifferent_access
  @attrs = {}
end

Instance Attribute Details

#attrs ⇒ Object (readonly)

Returns the value of attribute attrs.



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# File 'lib/webmate/presenters/base.rb', line 3

def attrs
  @attrs
end

Instance Method Details

#attribute(attr, &block) ⇒ Object 



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# File 'lib/webmate/presenters/base.rb', line 55

def attribute(attr, &block)
  self.attrs[attr.to_s] = yield
end

#attributes(*attrs, &block) ⇒ Object 



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# File 'lib/webmate/presenters/base.rb', line 42

def attributes(*attrs, &block)
  if @object.blank?
    object = attrs.last
    attrs.delete(attrs.last)
    raise ArgumentError, "Object was not specified" if object.is_a?(Symbol)
  end

  target = object || @object
  Array.wrap(attrs).flatten.each do |attribute|
    self.attrs[attribute.to_s] = target.send(attribute.to_s)
  end
end

#namespace(name, &block) ⇒ Object 



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# File 'lib/webmate/presenters/base.rb', line 10

def namespace(name, &block)
  serializer = self.class.new(@object, @options)
  serializer.instance_exec(@object, &block)
  self.attrs[name] = serializer.attrs
end

#resource(name, object = nil, &block) ⇒ Object 



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# File 'lib/webmate/presenters/base.rb', line 16

def resource(name, object = nil, &block)
  raise "You should set name for resource" if name.blank?
  raise "You should specify object" if @object.nil? && object.nil?
  nested_name = name.to_s
  nested_object = object || @object.send(nested_name)
  if nested_object.blank?
    self.attrs[nested_name] = {}
  else
    self.attrs[nested_name] = nested_resource(nested_name, nested_object, @options, &block)
  end
end

#resources(name, objects = nil, &block) ⇒ Object 



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# File 'lib/webmate/presenters/base.rb', line 28

def resources(name, objects = nil, &block)
  raise "You should specify object" if @object.nil? && objects.nil?
  objects = objects.flatten unless objects.nil?
  nested_objects = objects || @object.send(name.to_s)
  if nested_objects.blank?
    self.attrs[name.to_s] = []
  else
    self.attrs[name.to_s] = (nested_objects || []).inject([]) do |result, obj|
      resource = nested_resource(name, obj, @options, &block)
      resource.empty? ? result : (result << resource)
    end
  end
end