Class: RailsAdmin::Adapters::Mongoid::Association

Inherits:
Object
  • Object
show all
Defined in:
lib/rails_admin/adapters/mongoid/association.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(association, model) ⇒ Association

Returns a new instance of Association.



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 11

def initialize(association, model)
  @association = association
  @model = model
end

Instance Attribute Details

#association ⇒ Object (readonly)

Returns the value of attribute association.



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 7

def association
  @association
end

#model ⇒ Object (readonly)

Returns the value of attribute model.



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 7

def model
  @model
end

Instance Method Details

#as ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 105

def as
  association.as.try :to_sym
end

#association? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 134

def association?
  true
end

#embeds? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 142

def embeds?
  %i[embeds_one embeds_many].include?(macro)
end

#field_type ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 39

def field_type
  if polymorphic?
    :polymorphic_association
  else
    :"#{type}_association"
  end
end

#foreign_inverse_of ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 86

def foreign_inverse_of
  return unless polymorphic? && %i[referenced_in belongs_to].include?(macro)

  inverse_of_field.try(:to_sym)
end

#foreign_key ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 64

def foreign_key
  return if embeds?

  begin
    association.foreign_key.to_sym
  rescue StandardError
    nil
  end
end

#foreign_key_nullable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 74

def foreign_key_nullable?
  return if foreign_key.nil?

  true
end

#foreign_type ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 80

def foreign_type
  return unless polymorphic? && %i[referenced_in belongs_to].include?(macro)

  association.inverse_type.try(:to_sym) || :"#{name}_type"
end

#inverse_of ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 113

def inverse_of
  association.inverse_of.try :to_sym
end

#key_accessor ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 92

def key_accessor
  case macro.to_sym
  when :has_many
    "#{name.to_s.singularize}_ids".to_sym
  when :has_one
    "#{name}_id".to_sym
  when :embedded_in, :embeds_one, :embeds_many
    nil
  else
    foreign_key
  end
end

#klass ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 47

def klass
  if polymorphic? && %i[referenced_in belongs_to].include?(macro)
    polymorphic_parents(:mongoid, association.inverse_class_name, name) || []
  else
    association.klass
  end
end

#macro ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 138

def macro
  association.try(:macro) || association.class.name.split('::').last.underscore.to_sym
end

#name ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 16

def name
  association.name.to_sym
end

#nested_options ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 121

def nested_options
  nested = nested_attributes_options.try { |o| o[name] }
  if !nested && %i[embeds_one embeds_many].include?(macro.to_sym) && !cyclic?
    raise <<~MSG
      Embedded association without accepts_nested_attributes_for can't be handled by RailsAdmin,
      because embedded model doesn't have top-level access.
      Please add `accepts_nested_attributes_for :#{association.name}' line to `#{model}' model.
    MSG
  end

  nested
end

#polymorphic? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 109

def polymorphic?
  association.polymorphic? && %i[referenced_in belongs_to].include?(macro)
end

#pretty_name ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 20

def pretty_name
  name.to_s.tr('_', ' ').capitalize
end

#primary_key ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 55

def primary_key
  case type
  when :belongs_to, :has_and_belongs_to_many
    association.primary_key.to_sym
  else
    :_id
  end
end

#read_only? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 117

def read_only?
  false
end

#type ⇒ Object 



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# File 'lib/rails_admin/adapters/mongoid/association.rb', line 24

def type
  case macro.to_sym
  when :belongs_to, :referenced_in, :embedded_in
    :belongs_to
  when :has_one, :references_one, :embeds_one
    :has_one
  when :has_many, :references_many, :embeds_many
    :has_many
  when :has_and_belongs_to_many, :references_and_referenced_in_many
    :has_and_belongs_to_many
  else
    raise "Unknown association type: #{macro.inspect}"
  end
end