Class: Mongoid::Alize::ToCallback
Instance Attribute Summary
Attributes inherited from Callback
#debug, #denorm_attrs, #inverse_klass, #inverse_metadata, #inverse_relation, #klass, #metadata, #relation
Instance Method Summary
collapse
Methods inherited from Callback
#alias_callback, #aliased_callback_name, #callback_attached?, #callback_defined?, #callback_name, #define_denorm_attrs, #denorm_attrs_name, #field_values, #fields_to_s, #force_check, #force_param, #initialize, #to_s
Instance Method Details
#alias_destroy_callback ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 139
def alias_destroy_callback
unless callback_defined?(aliased_destroy_callback_name)
klass.send(:alias_method, aliased_destroy_callback_name, destroy_callback_name)
klass.send(:public, aliased_destroy_callback_name)
end
end
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#aliased_destroy_callback_name ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 146
def aliased_destroy_callback_name
"denormalize_destroy_#{direction}_#{relation}"
end
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#attach ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 5
def attach
define_denorm_attrs
define_callback
alias_callback
set_callback
define_destroy_callback
alias_destroy_callback
set_destroy_callback
end
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#define_callback ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 17
def define_callback
klass.class_eval <<-CALLBACK, __FILE__, __LINE__ + 1
def #{callback_name}#{force_param}
#{iterable_relation}.each do |relation|
next if relation.attributes.frozen?
is_one = #{is_one?}
if is_one
field_values = #{field_values("self")}
else
field_values = #{field_values("self", :id => true)}
end
prefixed_name = #{prefixed_name}
if is_one
#{relation_set('prefixed_name', 'field_values')}
else
#{pull_from_inverse}
#{relation_push('prefixed_name', 'field_values')}
end
end
#{debug ? "puts \"#{callback_name}\"": ""}
true
end
protected :#{callback_name}
CALLBACK
end
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#define_destroy_callback ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 49
def define_destroy_callback
klass.class_eval <<-CALLBACK, __FILE__, __LINE__ + 1
def #{destroy_callback_name}
#{iterable_relation}.each do |relation|
next if relation.attributes.frozen?
is_one = #{is_one?}
prefixed_name = #{prefixed_name}
if is_one
#{relation_set('prefixed_name', 'nil')}
else
#{pull_from_inverse}
end
end
#{debug ? "puts \"#{destroy_callback_name}\"": ""}
true
end
protected :#{destroy_callback_name}
CALLBACK
end
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#destroy_callback_name ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 150
def destroy_callback_name
"_#{aliased_destroy_callback_name}"
end
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#direction ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 154
def direction
"to"
end
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#find_relation ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 119
def find_relation
"relation.class.relations.values.find { |metadata| metadata.inverse(self) == :#{relation} && metadata.class_name == self.class.name }"
end
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#is_one? ⇒ Boolean
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# File 'lib/mongoid/alize/to_callback.rb', line 105
def is_one?
if inverse_relation
if self.inverse_metadata.relation.superclass == Mongoid::Relations::One
"true"
else
"false"
end
else
<<-RUBIES
(#{find_relation}.relation.superclass == Mongoid::Relations::One)
RUBIES
end
end
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#iterable_relation ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 123
def iterable_relation
"[self.#{relation}].flatten.compact"
end
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#mongoid_four_or_newer? ⇒ Boolean
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# File 'lib/mongoid/alize/to_callback.rb', line 158
def mongoid_four_or_newer?
Mongoid::VERSION.split('.').first.to_i >= 4
end
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#prefixed_name ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 83
def prefixed_name
if inverse_relation
":#{inverse_relation}_fields"
else
<<-RUBIES
(#{find_relation}.name.to_s + '_fields')
RUBIES
end
end
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#pull_from_inverse ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 72
def pull_from_inverse
<<-RUBIES
#{relation_pull('prefixed_name', '{ "_id" => self.id }')}
if _f = relation.send(prefixed_name)
_f.reject! do |hash|
hash["_id"] == self.id
end
end
RUBIES
end
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#relation_pull(field, value) ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 97
def relation_pull(field, value)
mongoid_four_or_newer? ? "relation.pull(#{field} => #{value})" : "relation.pull(#{field}, #{value})"
end
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#relation_push(field, value) ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 101
def relation_push(field, value)
mongoid_four_or_newer? ? "relation.push(#{field} => #{value})" : "relation.push(#{field}, #{value})"
end
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#relation_set(field, value) ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 93
def relation_set(field, value)
mongoid_four_or_newer? ? "relation.set(#{field} => #{value})" : "relation.set(#{field}, #{value})"
end
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#set_callback ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 127
def set_callback
unless callback_attached?("save", aliased_callback_name)
klass.set_callback(:save, :after, aliased_callback_name)
end
end
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#set_destroy_callback ⇒ Object
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# File 'lib/mongoid/alize/to_callback.rb', line 133
def set_destroy_callback
unless callback_attached?("destroy", aliased_destroy_callback_name)
klass.set_callback(:destroy, :after, aliased_destroy_callback_name)
end
end
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