Class: ActiveScaffold::DataStructures::NestedInfoAssociation

Inherits:
NestedInfo show all
Defined in:
lib/active_scaffold/data_structures/nested_info.rb

Instance Attribute Summary

Attributes inherited from NestedInfo

#association, #child_association, #constrained_fields, #param_name, #parent_id, #parent_model, #parent_scaffold, #scope

Instance Method Summary collapse

Methods inherited from NestedInfo

#belongs_to?, get, #new_instance?, #plural_association?, #singular_association?

Constructor Details

#initialize(model, params) ⇒ NestedInfoAssociation

Returns a new instance of NestedInfoAssociation.



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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 72

def initialize(model, params)
  super
  @association = parent_model.reflect_on_association(params[:association].to_sym)
  @param_name = @association.active_record.name.foreign_key.to_sym
  @parent_id = params[@param_name]
  iterate_model_associations(model)
end

Instance Method Details

#default_sorting ⇒ Object 



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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 121

def default_sorting
  if association.options[:order] # TODO: remove when rails 3 compatibility is removed
    association.options[:order]
  elsif association.respond_to?(:scope) # rails 4
    association.klass.class_eval(&association.scope).values[:order] if association.scope.is_a? Proc
  end
end

#habtm? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 86

def habtm?
  association.macro == :has_and_belongs_to_many
end

#has_many? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 82

def has_many?
  association.macro == :has_many
end

#has_one? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 92

def has_one?
  association.macro == :has_one
end

#readonly? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 113

def readonly?
  association.options[:readonly]
end

#readonly_through_association?(columns) ⇒ Boolean

A through association with has_one or has_many as source association create cannot be called in nested through associations, and not-nested through associations unless create columns include through reflection of reverse association e.g. customer -> networks -> firewall, reverse is firewall -> network -> customer, firewall can be created if create columns include network

Returns:

  • (Boolean) 


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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 101

def readonly_through_association?(columns)
  return false unless through_association?
  return true if association.through_reflection.options[:through]
  association.source_reflection.macro != :belongs_to && (
    !child_association || !columns.include?(child_association.through_reflection.name)
  )
end

#sorted? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 117

def sorted?
  association.options.key? :order
end

#through_association? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 109

def through_association?
  association.options[:through]
end

#to_params ⇒ Object 



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# File 'lib/active_scaffold/data_structures/nested_info.rb', line 129

def to_params
  super.merge(:association => @association.name, :assoc_id => parent_id)
end