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Contents
# require "eitil_core/active_record/array_to_relation"
require "eitil_core/errors/raise_error"
class Array
def to_relation(fallback_class = ApplicationRecord)
# Return an empty ActiveRecord_Relation instance when no objects are present,
# instead of returning the empty array itself. The reason being, that when you
# always return an association, you won't run into problems with undefined methods
# called later on, expecting an association instead of an array.
return fallback_class.none unless self.present?
unless self.all? { |item| item.class.ancestors.include? ApplicationRecord }
raise_error "InvalidArrayError", ".to_relation requires that all array items are model instances"
end
unless self.each_cons(2).all? { |el1, el2| el1.class == el2.class }
raise_error "InvalidArrayError", ".to_relation requires that all array items are instances of the same model"
end
_class = self.first.class
ids = self.map(&:id)
return _class.where(id: ids)
end
end
Version data entries
46 entries across 46 versions & 1 rubygems