Class: DataMapper::Associations::ManyToMany::Collection
- Inherits:
-
OneToMany::Collection
- Object
- LazyArray
- Collection
- OneToMany::Collection
- DataMapper::Associations::ManyToMany::Collection
- Defined in:
- lib/dm-core/associations/many_to_many.rb
Overview
class Relationship
Instance Attribute Summary
Attributes inherited from OneToMany::Collection
Attributes inherited from Collection
Attributes inherited from LazyArray
Instance Method Summary collapse
-
#destroy ⇒ Boolean
Remove every Resource in the m:m Collection from the repository.
-
#destroy! ⇒ Boolean
Remove every Resource in the m:m Collection from the repository, bypassing validation.
-
#intermediaries ⇒ Collection
Return the intermediaries linking the source to the targets.
Methods inherited from OneToMany::Collection
#clear, #reload, #replace, #update, #update!
Methods inherited from Collection
#<<, #[], #[]=, #all, #at, #clean?, #clear, #collect!, #concat, #create, #create!, #delete, #delete_at, #delete_if, #difference, #dirty?, #each, #first, #first_or_create, #first_or_new, #get, #get!, #hash, #insert, #inspect, #intersection, #last, #model, #new, #pop, #push, #reject!, #reload, #replace, #repository, #respond_to?, #reverse, #reverse!, #save, #save!, #set, #shift, #slice!, #union, #unshift, #update, #update!
Methods included from Deprecate
Methods inherited from LazyArray
#<<, #==, #[], #[]=, #any?, #at, #clear, #concat, #delete_at, #delete_if, #empty?, #eql?, #fetch, #first, #freeze, #frozen?, #include?, #index, #insert, #kind_of?, #last, #lazy_possible?, #load_with, #loaded?, #pop, #push, #replace, #respond_to?, #reverse, #reverse!, #shift, #slice!, #to_a, #unshift, #values_at
Dynamic Method Handling
This class handles dynamic methods through the method_missing method in the class DataMapper::Collection
Instance Method Details
#destroy ⇒ Boolean
Remove every Resource in the m:m Collection from the repository
This performs a deletion of each Resource in the Collection from the repository and clears the Collection.
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# File 'lib/dm-core/associations/many_to_many.rb', line 324 def destroy assert_source_saved 'The source must be saved before mass-deleting the collection' # make sure the records are loaded so they can be found when # the intermediaries are removed lazy_load unless intermediaries.all(via => self).destroy return false end super end |
#destroy! ⇒ Boolean
Remove every Resource in the m:m Collection from the repository, bypassing validation
This performs a deletion of each Resource in the Collection from the repository and clears the Collection while skipping validation.
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# File 'lib/dm-core/associations/many_to_many.rb', line 348 def destroy! assert_source_saved 'The source must be saved before mass-deleting the collection' model = self.model key = model.key(repository_name) conditions = Query.target_conditions(self, key, key) unless intermediaries.all(via => self).destroy! return false end unless model.all(:repository => repository, :conditions => conditions).destroy! return false end each do |resource| resource.persisted_state = Resource::State::Immutable.new(resource) end clear true end |
#intermediaries ⇒ Collection
Return the intermediaries linking the source to the targets
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# File 'lib/dm-core/associations/many_to_many.rb', line 378 def intermediaries through = self.through source = self.source @intermediaries ||= if through.loaded?(source) through.get_collection(source) else reset_intermediaries end end |