Class: YiffSpace::Utils::ParameterBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/yiffspace/utils/parameter_builder.rb

Class Method Summary collapse

Class Method Details

.get_includes_array(only_array, model_name, seen_objects = []) ⇒ Object 



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# File 'lib/yiffspace/utils/parameter_builder.rb', line 61

def self.get_includes_array(only_array, model_name, seen_objects = [])
  is_root = seen_objects.empty?
  include_array = []
  model = Kernel.const_get(model_name)
  available_includes = model.available_includes
  # Attributes and/or methods may be included in the final pass, but not includes
  seen_objects << model_name
  only_array.each do |item|
    match = item.match(/(\w+)\[(.+?)\]$/)
    item = (match || [])[1] || item
    item_sym = item.to_sym
    was_seen = inclusion_seen?(item, model, seen_objects)
    if match && available_includes.include?(item_sym) && (!was_seen || is_root)
      item_array = split_only_string(match[2])
      model.associated_models(item).each do |m|
        item_array = get_includes_array(item_array, m, seen_objects.clone)
        include_array << (item_array.empty? ? item_sym : { item_sym => item_array })
      end
    elsif available_includes.include?(item_sym) && (!was_seen || is_root)
      include_array << item_sym
    end
  end
  include_array
end

.get_only_hash(only_array, object, options = {}, seen_objects = []) ⇒ Object 



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# File 'lib/yiffspace/utils/parameter_builder.rb', line 11

def self.get_only_hash(only_array, object, options = {}, seen_objects = [])
  return {} if object.nil?

  is_root = seen_objects.empty?
  only_hash = { only: [], include: [], methods: [] }
  available_includes = object.available_includes
  attributes, methods = object.api_attributes(options[:user]).partition { |attr| object.has_attribute?(attr) }
  methods -= available_includes
  # Attributes and/or methods may be included in the final pass, but not includes
  seen_objects << object.class.name
  underscore = false
  only_array.each do |item|
    if item == "_"
      underscore = true
      next
    end
    match = item.match(/(\w+)\[(.+?)\]$/)
    item = (match || [])[1] || item
    item_sym = item.to_sym
    was_seen = inclusion_seen?(item, object.class, seen_objects)
    if match && available_includes.include?(item_sym) && (!was_seen || is_root)
      item_object = object.send(item_sym)
      next if item_object.nil?

      item_object = item_object[0] if item_object.is_a?(ActiveRecord::Relation)
      item_array = split_only_string(match[2])
      item_hash = get_only_hash(item_array, item_object, options, seen_objects.clone)
      only_hash[:include] << { item_sym => item_hash }
    elsif available_includes.include?(item_sym) && (!was_seen || is_root)
      only_hash[:include] << item_sym
    elsif attributes.include?(item_sym)
      only_hash[:only] << item_sym
    elsif methods.include?(item_sym)
      only_hash[:methods] << item_sym
      only_hash[:only] << item_sym
    end
  end
  only_hash.delete(:include) if only_hash[:include].empty?
  only_hash.delete(:methods) if only_hash[:methods].empty?
  only_hash[:only].unshift("_") if underscore
  only_hash
end

.includes_parameters(only_string, model_name) ⇒ Object 



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# File 'lib/yiffspace/utils/parameter_builder.rb', line 54

def self.includes_parameters(only_string, model_name)
  return [] if only_string.blank?

  only_array = split_only_string(only_string)
  get_includes_array(only_array, model_name)
end

.inclusion_seen?(inclusion, class_object, seen_objects) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/yiffspace/utils/parameter_builder.rb', line 86

def self.inclusion_seen?(inclusion, class_object, seen_objects)
  if class_object.reflections[inclusion]
    inclusion_class = class_object.reflections[inclusion].class_name
    max_seen = (class_object.multiple_includes.include?(inclusion.to_sym) ? 1 : 0)
    seen_objects.count(inclusion_class) > max_seen
  else
    false
  end
end

.serial_parameters(only_string, object, options = {}) ⇒ Object 



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# File 'lib/yiffspace/utils/parameter_builder.rb', line 6

def self.serial_parameters(only_string, object, options = {})
  only_array = split_only_string(only_string)
  get_only_hash(only_array, object, options)
end

.split_only_string(only_string) ⇒ Object 



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# File 'lib/yiffspace/utils/parameter_builder.rb', line 96

def self.split_only_string(only_string)
  only_array = []
  offset = 0
  position = 0
  level = 0
  loop do
    str = only_string[Range.new(position, -1)]
    match = str.match(/[,\[\]]/)
    break unless match

    start_pos, end_pos = match.offset(0)
    if match[0] == "," && level.zero?
      only_array << only_string[Range.new(offset, position + start_pos - 1)]
      offset = position + end_pos
    elsif match[0] == "["
      level += 1
    elsif match[0] == "]"
      level -= 1
    end
    position += end_pos
  end
  only_array << only_string[Range.new(offset, -1)]
end