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Versions: 51
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Contents
class Marty::Relation
# Given a Mcfly class (klass) and a list of classes which can
# reference klass, returns instaces of klass which have no references.
def self.not_referenced(klass, ref_classes)
col = (klass.name.split('::').last.snakecase + '_id').to_sym
ids = klass.where(obsoleted_dt: 'infinity').pluck(:group_id)
ref_ids = ref_classes.map do |rclass|
rclass.where(obsoleted_dt: 'infinity', col => ids).pluck(col)
end.flatten.uniq
klass.where(id: ids - ref_ids).to_a
end
# Find Mcfly references from klass instances which have been
# obsoleted. A hash is returned with a key for each
# mcfly_belongs_to reference from klass.
def self.obsoleted_references(klass)
assoc_h = Marty::DataConversion.associations(klass)
assoc_h.each_with_object({}) do |(a, ah), h|
assoc_class = ah[:assoc_class]
foreign_key = ah[:foreign_key]
next unless Mcfly.has_mcfly? assoc_class
h[a] = klass.where(obsoleted_dt: 'infinity').map do |obj|
ref_key = obj.send(foreign_key)
next unless ref_key
ref = assoc_class.find(ref_key)
obj unless Mcfly.is_infinity(ref.obsoleted_dt)
end.compact
end
end
end
Version data entries
51 entries across 51 versions & 1 rubygems