Class: MotionPrime::AssociationCollection

Inherits:
Array
  • Object
show all
Includes:
FilterMixin
Defined in:
motion-prime/models/association_collection.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from FilterMixin

#filter_array

Constructor Details

#initialize(bag, options, *args) ⇒ AssociationCollection

Returns a new instance of AssociationCollection.



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# File 'motion-prime/models/association_collection.rb', line 8

def initialize(bag, options, *args)
  @bag = bag
  @association_name = options[:association_name]
  bag.bare_class = model_class

  inverse_relation_options = options[:inverse_relation]
  define_inverse_relation(inverse_relation_options)

  @model_inverse_relation_name = (model_class._associations || {}).find do |name, options|
    options[:class_name] == inverse_relation.class_name_without_kvo
  end.try(:first)

  # when use #find() nested children will be reallocated and their bags will be empty
  # data = stored? ? find(*args) : filter(*args)
  data = filter(*args)
  super data
end

Instance Attribute Details

#association_name ⇒ Object (readonly)

Returns the value of attribute association_name.



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# File 'motion-prime/models/association_collection.rb', line 5

def association_name
  @association_name
end

#bag ⇒ Object (readonly)

Returns the value of attribute bag.



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# File 'motion-prime/models/association_collection.rb', line 5

def bag
  @bag
end

#inverse_relation_key ⇒ Object (readonly)

Returns the value of attribute inverse_relation_key.



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# File 'motion-prime/models/association_collection.rb', line 6

def inverse_relation_key
  @inverse_relation_key
end

#inverse_relation_name ⇒ Object (readonly)

Returns the value of attribute inverse_relation_name.



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# File 'motion-prime/models/association_collection.rb', line 6

def inverse_relation_name
  @inverse_relation_name
end

#model_inverse_relation_name ⇒ Object (readonly)

Returns the value of attribute model_inverse_relation_name.



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# File 'motion-prime/models/association_collection.rb', line 6

def model_inverse_relation_name
  @model_inverse_relation_name
end

Instance Method Details

#add(record) ⇒ Object Also known as: <<

Add model record to association collection.

@example:

project.users.new(name: "Bob", age: 10)

Returns:

  • MotionPrime::Model model



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# File 'motion-prime/models/association_collection.rb', line 45

def add(record)
  set_inverse_relation_for(record)
  self.bag << record
  record
end

#all ⇒ Object Also known as: to_a

Return all association records.

@example:

project.users.all



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# File 'motion-prime/models/association_collection.rb', line 58

def all
  data = bag.to_a
  set_inverse_relation_for(data)
  data
end

#delete_all ⇒ Object

Remove all association records.

@example:

project.users.delete_all



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# File 'motion-prime/models/association_collection.rb', line 104

def delete_all
  all.each { |obj| obj.delete }
end

#filter(find_options = {}, sort_options = nil) ⇒ Object 



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# File 'motion-prime/models/association_collection.rb', line 84

def filter(find_options = {}, sort_options = nil)
  find_options = build_find_options(find_options)
  sort_options = build_sort_options(sort_options)

  data = filter_array(bag.to_a, find_options, sort_options)

  set_inverse_relation_for(data)
  data
end

#find(find_options = {}, sort_options = nil) ⇒ Object

Find association records.

@example:

project.users.find(age: 10)



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# File 'motion-prime/models/association_collection.rb', line 73

def find(find_options = {}, sort_options = nil)
  raise "Use `filter` method when bag has not been saved yet" unless stored?

  find_options = build_find_options(find_options)
  sort_options = build_sort_options(sort_options)

  data = bag.find(find_options, sort_options)
  set_inverse_relation_for(data)
  data
end

#model_class ⇒ Object 



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# File 'motion-prime/models/association_collection.rb', line 94

def model_class
  @model_class ||= @association_name.classify.constantize
end

#new(attributes = {}) ⇒ Object

Initialize a new object and add to collection.

@example:

project.users.new(name: "Bob", age: 10)

Returns:

  • MotionPrime::Model unsaved model



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# File 'motion-prime/models/association_collection.rb', line 33

def new(attributes = {})
  record = model_class.new(attributes)
  add(record)
end

#stored? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'motion-prime/models/association_collection.rb', line 108

def stored?
  bag.store.present?
end