Module: Vidibus::Versioning::Mongoid

Extended by:
ActiveSupport::Concern
Defined in:
lib/vidibus/versioning/mongoid.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#delete ⇒ Object 



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# File 'lib/vidibus/versioning/mongoid.rb', line 113

def delete
  super if remove_version(:delete) == nil
end

#destroy ⇒ Object 



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# File 'lib/vidibus/versioning/mongoid.rb', line 117

def destroy
  super if remove_version(:destroy) == nil
end

#migrate!(number = nil) ⇒ Object

Applies attributes of wanted version on self. Stores current attributes in a new version.



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# File 'lib/vidibus/versioning/mongoid.rb', line 69

def migrate!(number = nil)
  unless number || version_cache.wanted_version_number
    raise(MigrationError, 'no version given')
  end
  if number && number != version_cache.wanted_version_number
    version!(number)
  end
  if version_cache.self_version
    raise(MigrationError, 'cannot migrate to current version')
  end

  set_original_version_obj

  self.attributes = version_attributes
  self.version_number = version_cache.wanted_version_number
  save!
end

#new_version? ⇒ Boolean

Returns true if version requested is a new one.

Returns:

  • (Boolean) 


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# File 'lib/vidibus/versioning/mongoid.rb', line 134

def new_version?
  version_obj and version_obj.new_record?
end

#redo! ⇒ Object

Calls #version!(:next) and migrate!



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# File 'lib/vidibus/versioning/mongoid.rb', line 94

def redo!
  version!(:next)
  migrate!
end

#reload_version(*args) ⇒ Object

Reloads this record and applies version attributes.



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# File 'lib/vidibus/versioning/mongoid.rb', line 122

def reload_version(*args)
  reloaded_self = self.reload
  reloaded_self.version(*version_cache.version_args) if version_cache.version_args
  reloaded_self
end

#save(*args) ⇒ Object

Saves the record and handles version persistence.



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# File 'lib/vidibus/versioning/mongoid.rb', line 100

def save(*args)
  return false if invalid?
  saved = persist_version
  (saved == nil) ? super(*args) : saved
end

#save!(*args) ⇒ Object

Raises a validation error if saving fails.



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# File 'lib/vidibus/versioning/mongoid.rb', line 107

def save!(*args)
  unless save(*args)
    raise(::Mongoid::Errors::Validations, self)
  end
end

#undo! ⇒ Object

Calls #version!(:previous) and migrate!



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# File 'lib/vidibus/versioning/mongoid.rb', line 88

def undo!
  version!(:previous)
  migrate!
end

#version(*args) ⇒ Object

Returns a copy of this object with versioned attributes applied.

Valid arguments are:

:new       returns a new version of self
:next      returns the next version of self, may be new as well
:previous  returns the previous version of self
48         returns version 48 of self



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# File 'lib/vidibus/versioning/mongoid.rb', line 54

def version(*args)
  self.class.find(_id).tap do |copy|
    copy.apply_version!(*args)
  end
end

#version!(*args) ⇒ Object

Applies versioned attributes on this object. Returns nil. For valid arguments, see #version.



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# File 'lib/vidibus/versioning/mongoid.rb', line 63

def version!(*args)
  self.apply_version!(*args)
end

#version_object ⇒ Object

Returns the currently set version object.



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# File 'lib/vidibus/versioning/mongoid.rb', line 129

def version_object
  version_cache.version_obj
end