Class: GraphQL::Models::Mutator

Inherits:
Object
  • Object
show all
Defined in:
lib/graphql/models/mutator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(field_map, root_model, inputs, context) ⇒ Mutator

Returns a new instance of Mutator.



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# File 'lib/graphql/models/mutator.rb', line 7

def initialize(field_map, root_model, inputs, context)
  @field_map = field_map
  @root_model = root_model
  @inputs = inputs
  @context = context
end

Instance Attribute Details

#context ⇒ Object

Returns the value of attribute context.



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# File 'lib/graphql/models/mutator.rb', line 5

def context
  @context
end

#field_map ⇒ Object

Returns the value of attribute field_map.



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# File 'lib/graphql/models/mutator.rb', line 5

def field_map
  @field_map
end

#inputs ⇒ Object

Returns the value of attribute inputs.



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# File 'lib/graphql/models/mutator.rb', line 5

def inputs
  @inputs
end

#root_model ⇒ Object

Returns the value of attribute root_model.



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# File 'lib/graphql/models/mutator.rb', line 5

def root_model
  @root_model
end

Instance Method Details

#apply_changes ⇒ Object

Raises:

  • (StandardError) 


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# File 'lib/graphql/models/mutator.rb', line 14

def apply_changes
  raise StandardError, "Called apply_changes twice for the same mutator" if @all_changes
  @all_changes = MutationHelpers.apply_changes(field_map, root_model, inputs, context)
  changed_models
end

#authorize! ⇒ Object

Raises:

  • (StandardError) 


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# File 'lib/graphql/models/mutator.rb', line 30

def authorize!
  raise StandardError, "Need to call apply_changes before #{__method__}" unless @all_changes
  MutationHelpers.authorize_changes(context, @all_changes)
end

#changed_models ⇒ Object

Raises:

  • (StandardError) 


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# File 'lib/graphql/models/mutator.rb', line 20

def changed_models
  raise StandardError, "Need to call apply_changes before #{__method__}" unless @all_changes
  @all_changes.map { |c| c[:model_instance] }.uniq
end

#save! ⇒ Object

Raises:

  • (StandardError) 


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# File 'lib/graphql/models/mutator.rb', line 35

def save!
  raise StandardError, "Need to call apply_changes before #{__method__}" unless @all_changes

  ActiveRecord::Base.transaction(requires_new: true) do
    changed_models.each do |model|
      next if model.destroyed?

      if model.marked_for_destruction?
        model.destroy
      else
        model.save!
      end
    end

    changed_models.reject(&:destroyed?)
  end
end

#validate! ⇒ Object

Raises:

  • (StandardError) 


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# File 'lib/graphql/models/mutator.rb', line 25

def validate!
  raise StandardError, "Need to call apply_changes before #{__method__}" unless @all_changes
  MutationHelpers.validate_changes(inputs, field_map, root_model, context, @all_changes)
end