Module: EasyMapper::Model

Defined in:
lib/easy_mapper/model.rb,
lib/easy_mapper/model/class_macros.rb,
lib/easy_mapper/model/query_methods.rb

Defined Under Namespace

Modules: ClassMacros, QueryMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(cls) ⇒ Object 



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# File 'lib/easy_mapper/model.rb', line 9

def self.included(cls)
  cls.extend ClassMacros
  cls.extend QueryMethods

  db_adapter = EasyMapper::Config.db_adapter
  cls.repository EasyMapper::DbRepository.new(cls, db_adapter)

  cls.class_exec do
    def initialize(initial_values = {})
      @object = initial_values.select do |key, _|
        self.class.attributes.include? key
      end

      all_associations = associations_to_one + associations_to_many
      defined_assoc_names = all_associations.map(&:name)

      @associations = initial_values.select do |key, _|
        defined_assoc_names.include? key
      end

      associations_to_many
        .reject { |assoc| initial_values.include? assoc.name }
        .each do |assoc|
          @associations[assoc.name] = []
        end
    end
  end

  def save
    associations_to_one.each do |assoc_to_one|
      result = @associations[assoc_to_one.name].save
      @object[assoc_to_one.id_column] = result.id
    end

    if id
      repository.update(id, @object)
    else
      @object[:id] = repository.next_id
      repository.create(@object)
    end

    associations_to_many.each do |assoc_to_many|
      @associations[assoc_to_many.name].each do |model|
        model.public_send "#{assoc_to_many.mapped_by}=", id
        model.save
      end
    end

    self
  end

  def delete
    raise Errors::DeleteUnsavedRecordError unless id

    associations_to_many.each do |assoc_to_many|
      @associations[assoc_to_many.name].each(&:delete)
    end

    repository.delete(id: id)

    associations_to_one.each do |assoc_to_one|
      result = @associations[assoc_to_one.name].delete
    end
  end

  def ==(other)
    return id == other.id if id && other.id
    equal? other
  end

  private

  def primary_keys
    self.class.primary_keys
  end

  def repository
    self.class.repository
  end

  def associations_to_many
    self.class.associations_to_many
  end

  def associations_to_one
    self.class.associations_to_one
  end
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/easy_mapper/model.rb', line 74

def ==(other)
  return id == other.id if id && other.id
  equal? other
end

#associations_to_many ⇒ Object 



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# File 'lib/easy_mapper/model.rb', line 89

def associations_to_many
  self.class.associations_to_many
end

#associations_to_one ⇒ Object 



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# File 'lib/easy_mapper/model.rb', line 93

def associations_to_one
  self.class.associations_to_one
end

#delete ⇒ Object

Raises:



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# File 'lib/easy_mapper/model.rb', line 60

def delete
  raise Errors::DeleteUnsavedRecordError unless id

  associations_to_many.each do |assoc_to_many|
    @associations[assoc_to_many.name].each(&:delete)
  end

  repository.delete(id: id)

  associations_to_one.each do |assoc_to_one|
    result = @associations[assoc_to_one.name].delete
  end
end

#primary_keys ⇒ Object 



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# File 'lib/easy_mapper/model.rb', line 81

def primary_keys
  self.class.primary_keys
end

#repository ⇒ Object 



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# File 'lib/easy_mapper/model.rb', line 85

def repository
  self.class.repository
end

#save ⇒ Object 



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# File 'lib/easy_mapper/model.rb', line 37

def save
  associations_to_one.each do |assoc_to_one|
    result = @associations[assoc_to_one.name].save
    @object[assoc_to_one.id_column] = result.id
  end

  if id
    repository.update(id, @object)
  else
    @object[:id] = repository.next_id
    repository.create(@object)
  end

  associations_to_many.each do |assoc_to_many|
    @associations[assoc_to_many.name].each do |model|
      model.public_send "#{assoc_to_many.mapped_by}=", id
      model.save
    end
  end

  self
end