Module: Perry::Persistence::InstanceMethods

Defined in:
lib/perry/persistence.rb

Instance Method Summary collapse

Instance Method Details

#[]=(attribute, value) ⇒ Object 



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# File 'lib/perry/persistence.rb', line 20

def []=(attribute, value)
  set_attribute(attribute, value)
end

#attributes=(attributes) ⇒ Object 



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# File 'lib/perry/persistence.rb', line 24

def attributes=(attributes)
  set_attributes(attributes)
end

#destroy ⇒ Object Also known as: delete

Raises:



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# File 'lib/perry/persistence.rb', line 46

def destroy
  raise Perry::PerryError.new("cannot destroy a frozen object") if frozen?
  unless self.new_record? || self[primary_key].nil?
    write_adapter.call(:delete, :object => self).success
  end
end

#destroy! ⇒ Object Also known as: delete! 



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# File 'lib/perry/persistence.rb', line 54

def destroy!
  destroy or raise Perry::RecordNotSaved
end

#freeze ⇒ Object

Calls Object#freeze on the model and on the attributes hash in addition to calling #freeze! to prevent the model from being saved or destroyed.



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# File 'lib/perry/persistence.rb', line 66

def freeze
  freeze!
  attributes.freeze
  super
end

#freeze! ⇒ Object

Prevents the model from being saved or destroyed in the future while still allowing the model and its attributes hash to be modified.



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# File 'lib/perry/persistence.rb', line 75

def freeze!
  @frozen = true
end

#frozen? ⇒ Boolean

Returns true if ether #freeze or #freeze! has been called on the model.

Returns:

  • (Boolean) 


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# File 'lib/perry/persistence.rb', line 81

def frozen?
  !!@frozen
end

#reload ⇒ Object 



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# File 'lib/perry/persistence.rb', line 59

def reload
  self.attributes = self.class.where(primary_key => self.send(primary_key)).first.attributes
end

#save ⇒ Object

Raises:



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# File 'lib/perry/persistence.rb', line 28

def save
  raise Perry::PerryError.new("cannot write a frozen object") if frozen?
  write_adapter.call(:write, :object => self).success
end

#save! ⇒ Object 



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# File 'lib/perry/persistence.rb', line 33

def save!
  save or raise Perry::RecordNotSaved
end

#update_attributes(attributes) ⇒ Object 



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# File 'lib/perry/persistence.rb', line 37

def update_attributes(attributes)
  self.attributes = attributes
  save
end

#update_attributes!(attributes) ⇒ Object 



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# File 'lib/perry/persistence.rb', line 42

def update_attributes!(attributes)
  update_attributes(attributes) or raise Perry::RecordNotSaved
end