Class: Importu::Backends::ActiveRecord::AssignmentContext

Inherits:
Object
  • Object
show all
Defined in:
lib/importu/backends/active_record.rb

Overview

Context for assigning field values to a model instance.

This is the execution context for before_save hooks, providing access to the record data, model object, and current action.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(record, object, action) ⇒ AssignmentContext

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of AssignmentContext.



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# File 'lib/importu/backends/active_record.rb', line 134

def initialize(record, object, action)
  @record, @object, @action = record, object, action
end

Instance Attribute Details

#action ⇒ Symbol (readonly)

Returns the action (:create or :update).

Returns:

  • (Symbol) —

    the action (:create or :update)



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# File 'lib/importu/backends/active_record.rb', line 131

def action
  @action
end

#object ⇒ ActiveRecord::Base (readonly)

Returns the model instance.

Returns:

  • (ActiveRecord::Base) —

    the model instance



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# File 'lib/importu/backends/active_record.rb', line 128

def object
  @object
end

#record ⇒ Importu::Record (readonly)

Returns the import record.

Returns:



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# File 'lib/importu/backends/active_record.rb', line 125

def record
  @record
end

Instance Method Details

#apply { ... } ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Executes a block in this context.

Yields:

  • block to execute with access to record, object, and action



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# File 'lib/importu/backends/active_record.rb', line 142

def apply(&block)
  instance_eval(&block) if block
end

#assign_values ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Assigns field values from the record to the object.

Raises:



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# File 'lib/importu/backends/active_record.rb', line 150

def assign_values
  field_names = record.assignable_fields_for(action)

  begin
    field_names.each do |name|
      object.send("#{name}=", record[name])
    end
  rescue NoMethodError
    raise_unassignable_fields!(field_names)
  end
end