module Mongoid::Association::Referenced::HasOne::Buildable
The Builder behavior for has_one associations.
@since 7.0
Public Instance Methods
build(base, object, type = nil, selected_fields = nil)
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This method either takes an _id or an object and queries for the inverse side using the id or sets the object after clearing the associated object.
@param [ Object
] base The base object. @param [ Object
] object The object to use to build the association. @param [ String ] type The type of the association. @param [ nil ] selected_fields Must be nil.
@return [ Document
] A single document.
# File lib/mongoid/association/referenced/has_one/buildable.rb, line 24 def build(base, object, type = nil, selected_fields = nil) if query?(object) if !base.new_record? execute_query(object, base) end else clear_associated(object) object end end
Private Instance Methods
clear_associated(object)
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# File lib/mongoid/association/referenced/has_one/buildable.rb, line 37 def clear_associated(object) unless inverse raise Errors::InverseNotFound.new( @owner_class, name, object.class, foreign_key, ) end if object && (associated = object.send(inverse)) associated.substitute(nil) end end
execute_query(object, base)
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# File lib/mongoid/association/referenced/has_one/buildable.rb, line 56 def execute_query(object, base) query_criteria(object, base).limit(1).first(id_sort: :none) end
query?(object)
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# File lib/mongoid/association/referenced/has_one/buildable.rb, line 68 def query?(object) object && !object.is_a?(Mongoid::Document) end
query_criteria(object, base)
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# File lib/mongoid/association/referenced/has_one/buildable.rb, line 51 def query_criteria(object, base) crit = klass.where(foreign_key => object) with_polymorphic_criterion(crit, base) end
with_polymorphic_criterion(criteria, base)
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# File lib/mongoid/association/referenced/has_one/buildable.rb, line 60 def with_polymorphic_criterion(criteria, base) if polymorphic? criteria.where(type => base.class.name) else criteria end end