Module: Mongoid::Stateful

Included in:
Composable
Defined in:
lib/mongoid/stateful.rb

Overview

Mixin module included into Mongoid::Document which adds behavior for getting the various lifecycle states a document can transition through.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#destroyed=(value) ⇒ Object (writeonly)

Sets the attribute destroyed

Parameters:

  • value —

    the value to set the attribute destroyed to.



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# File 'lib/mongoid/stateful.rb', line 10

def destroyed=(value)
  @destroyed = value
end

#flagged_for_destroy=(value) ⇒ Object (writeonly)

Sets the attribute flagged_for_destroy

Parameters:

  • value —

    the value to set the attribute flagged_for_destroy to.



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# File 'lib/mongoid/stateful.rb', line 10

def flagged_for_destroy=(value)
  @flagged_for_destroy = value
end

#previously_new_record=(value) ⇒ Object (writeonly)

Sets the attribute previously_new_record

Parameters:

  • value —

    the value to set the attribute previously_new_record to.



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# File 'lib/mongoid/stateful.rb', line 10

def previously_new_record=(value)
  @previously_new_record = value
end

Instance Method Details

#destroyed? ⇒ true | false

Returns true if the Document has been succesfully destroyed, and false if it hasn’t. This is determined by the variable @destroyed and NOT by checking the database.

Examples:

Is the document destroyed?

person.destroyed?

Returns:

  • (true | false) —

    True if destroyed, false if not.



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# File 'lib/mongoid/stateful.rb', line 87

def destroyed?
  @destroyed ||= false
end

#flagged_for_destroy? ⇒ true | false Also known as: marked_for_destruction?, _destroy

Returns whether or not the document has been flagged for deletion, but not destroyed yet. Used for atomic pulls of child documents.

Examples:

Is the document flagged?

document.flagged_for_destroy?

Returns:

  • (true | false) —

    If the document is flagged.



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# File 'lib/mongoid/stateful.rb', line 73

def flagged_for_destroy?
  @flagged_for_destroy ||= false
end

#new_record=(new_value) ⇒ true | false

Sets whether the document has been persisted to the database.

Parameters:

  • new_value (true | false) —

    The value to set.

Returns:

  • (true | false) —

    The set value.



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# File 'lib/mongoid/stateful.rb', line 17

def new_record=(new_value)
  @new_record ||= false
  if @new_record && !new_value
    @previously_new_record = true
  end
  @new_record = new_value
end

#new_record? ⇒ true | false

Returns true if the document has not been persisted to the database, false if it has. This is determined by the variable @new_record and NOT if the object has an id.

Examples:

Is the document new?

person.new_record?

Returns:

  • (true | false) —

    True if new, false if not.



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# File 'lib/mongoid/stateful.rb', line 33

def new_record?
  @new_record ||= false
end

#persisted? ⇒ true | false

Checks if the document has been saved to the database. Returns false if the document has been destroyed.

Examples:

Is the document persisted?

person.persisted?

Returns:

  • (true | false) —

    True if persisted, false if not.



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# File 'lib/mongoid/stateful.rb', line 53

def persisted?
  !new_record? && !destroyed?
end

#previously_new_record? ⇒ true | false

Returns true if this document was just created – that is, prior to the last save, the object didn’t exist in the database and new_record? would have returned true.

Returns:

  • (true | false) —

    True if was just created, false if not.



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# File 'lib/mongoid/stateful.rb', line 42

def previously_new_record?
  @previously_new_record ||= false
end

#previously_persisted? ⇒ true | false

Checks if the document was previously saved to the database but now it has been deleted.

Returns:

  • (true | false) —

    True if was persisted but now destroyed, otherwise false.



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# File 'lib/mongoid/stateful.rb', line 62

def previously_persisted?
  !new_record? && destroyed?
end

#pushable? ⇒ true | false

Determine if the document can be pushed.

Examples:

Is this pushable?

person.pushable?

Returns:

  • (true | false) —

    Is the document new and embedded?



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# File 'lib/mongoid/stateful.rb', line 97

def pushable?
  new_record? &&
    embedded_many? &&
    _parent.persisted? &&
    !_parent.delayed_atomic_sets[atomic_path]
end

#readonly! ⇒ true | false

Flags the document as readonly. Will cause a ReadonlyDocument error to be raised if the document is attempted to be saved, updated or destroyed.

Examples:

Flag the document as readonly.

document.readonly!

Returns:

  • (true | false) —

    true if the document was successfully marked readonly, false otherwise.



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# File 'lib/mongoid/stateful.rb', line 112

def readonly!
  if Mongoid.legacy_readonly
    Mongoid::Warnings.warn_legacy_readonly
    false
  else
    @readonly = true
  end
end

#readonly? ⇒ true | false

Is the document readonly?

Examples:

Is the document readonly?

document.readonly?

Returns:

  • (true | false) —

    If the document is readonly.



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# File 'lib/mongoid/stateful.rb', line 127

def readonly?
  if Mongoid.legacy_readonly
    __selected_fields != nil
  else
    @readonly ||= false
  end
end

#settable? ⇒ true | false

Determine if the document can be set.

Examples:

Is this settable?

person.settable?

Returns:

  • (true | false) —

    Is this document a new embeds one?



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# File 'lib/mongoid/stateful.rb', line 141

def settable?
  new_record? && embedded_one? && _parent.persisted?
end

#updateable? ⇒ true | false

Is the document updateable?

Examples:

Is the document updateable?

person.updateable?

Returns:

  • (true | false) —

    If the document is changed and persisted.



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# File 'lib/mongoid/stateful.rb', line 151

def updateable?
  persisted? && changed?
end