Class: SelfishAssociations::ScopeReaders::Relation

Inherits:
BasicObject
Defined in:
lib/selfish_associations/scope_readers/relation.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass) ⇒ Relation

Returns a new instance of Relation.



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# File 'lib/selfish_associations/scope_readers/relation.rb', line 22

def initialize(klass)
  @traverser = ::SelfishAssociations::AssociationTraverser.new(klass)
  @conditions_for_find = {}
  @joins_for_find = []
  @attributes_for_create = {}
  @joins_for_create = []
end

Instance Attribute Details

#attributes_for_create ⇒ Object (readonly)

Returns the value of attribute attributes_for_create.



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# File 'lib/selfish_associations/scope_readers/relation.rb', line 19

def attributes_for_create
  @attributes_for_create
end

#conditions_for_find ⇒ Object (readonly)

Returns the value of attribute conditions_for_find.



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# File 'lib/selfish_associations/scope_readers/relation.rb', line 19

def conditions_for_find
  @conditions_for_find
end

#traverser ⇒ Object (readonly)

Returns the value of attribute traverser.



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# File 'lib/selfish_associations/scope_readers/relation.rb', line 20

def traverser
  @traverser
end

Instance Method Details

#create_with(conditions) ⇒ Object 



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# File 'lib/selfish_associations/scope_readers/relation.rb', line 45

def create_with(conditions)
  @attributes_for_create.merge!(conditions)
  @joins_for_create += @traverser.associations!(merge: false)
  @traverser.reset!
  return self
end

#joins_for_create ⇒ Object 



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# File 'lib/selfish_associations/scope_readers/relation.rb', line 56

def joins_for_create
  ::SelfishAssociations::PathMerger.new(@joins_for_create).merge
end

#joins_for_find ⇒ Object 



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# File 'lib/selfish_associations/scope_readers/relation.rb', line 52

def joins_for_find
  ::SelfishAssociations::PathMerger.new(@joins_for_find).merge
end

#read(scope) ⇒ Object 



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# File 'lib/selfish_associations/scope_readers/relation.rb', line 30

def read(scope)
  args = scope.arity == 0 ? [] : [@traverser]
  instance_exec(*args, &scope)
  return self
end

#where(conditions) ⇒ Object

TODO: implement argless where() and not()



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# File 'lib/selfish_associations/scope_readers/relation.rb', line 37

def where(conditions)
  create_with(conditions)
  @conditions_for_find.merge!(conditions)
  @joins_for_find += @traverser.associations!(merge: false)
  @traverser.reset!
  return self
end