1 module ConsistencyValidations
2 extend ActiveSupport::Concern
4 # Generic checks that are run for the updates and deletes of
5 # node, ways and relations. This code is here to avoid duplication,
6 # and allow the extension of the checks without having to modify the
7 # code in 6 places for all the updates and deletes.
8 # This will throw an exception if there is an inconsistency
9 def check_update_element_consistency(old, new, user)
10 if new.id != old.id || new.id.nil? || old.id.nil?
11 raise OSM::APIPreconditionFailedError, "New and old IDs don't match on #{new.class}. #{new.id} != #{old.id}."
12 elsif new.version != old.version
13 raise OSM::APIVersionMismatchError.new(new.id, new.class.to_s, new.version, old.version)
16 check_changeset_consistency(new.changeset, user)
19 # This is similar to above, just some validations don't apply
20 def check_create_element_consistency(new, user)
21 check_changeset_consistency(new.changeset, user)
25 # subset of consistency checks which should be applied to almost
26 # all the changeset controller's writable methods.
27 def check_changeset_consistency(changeset, user)
28 # check user credentials - only the user who opened a changeset
31 raise OSM::APIChangesetMissingError
32 elsif user.id != changeset.user_id
33 raise OSM::APIUserChangesetMismatchError
34 elsif !changeset.open?
35 raise OSM::APIChangesetAlreadyClosedError, changeset