Module: Dynamoid::Associations::SingleAssociation
Instance Attribute Summary
Attributes included from Association
#loaded, #name, #options, #source
Instance Method Summary
collapse
#declaration_field_name, #declaration_field_type, #initialize, #loaded?, #reset, #target
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(method, *args) ⇒ Object
Delegate methods we don’t find directly to the target.
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# File 'lib/dynamoid/associations/single_association.rb', line 48
def method_missing(method, *args)
if target.respond_to?(method)
target.send(method, *args)
else
super
end
end
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Instance Method Details
#==(other) ⇒ Boolean
Is this object equal to the association’s target?
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# File 'lib/dynamoid/associations/single_association.rb', line 41
def ==(other)
target == other
end
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#associate(hash_key) ⇒ Object
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# File 'lib/dynamoid/associations/single_association.rb', line 66
def associate(hash_key)
target.send(target_association).disassociate(source.hash_key) if target && target_association
source.update_attribute(source_attribute, Set[hash_key])
end
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#create(attributes = {}) ⇒ Object
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# File 'lib/dynamoid/associations/single_association.rb', line 32
def create(attributes = {})
setter(target_class.create(attributes))
end
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#create!(attributes = {}) ⇒ Object
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# File 'lib/dynamoid/associations/single_association.rb', line 28
def create!(attributes = {})
setter(target_class.create!(attributes))
end
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#delete ⇒ Object
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# File 'lib/dynamoid/associations/single_association.rb', line 22
def delete
target.send(target_association).disassociate(source.hash_key) if target && target_association
disassociate
target
end
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#disassociate(hash_key = nil) ⇒ Object
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# File 'lib/dynamoid/associations/single_association.rb', line 71
def disassociate(hash_key=nil)
source.update_attribute(source_attribute, nil)
end
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#empty? ⇒ Boolean
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# File 'lib/dynamoid/associations/single_association.rb', line 60
def empty?
target.nil?
end
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#nil? ⇒ Boolean
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# File 'lib/dynamoid/associations/single_association.rb', line 56
def nil?
target.nil?
end
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#setter(object) ⇒ Object
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# File 'lib/dynamoid/associations/single_association.rb', line 10
def setter(object)
if object.nil?
delete
return
end
associate(object.hash_key)
self.target = object
object.send(target_association).associate(source.hash_key) if target_association
object
end
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