/
consistency_validations.rb
38 lines (34 loc) · 1.47 KB
/
consistency_validations.rb
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module ConsistencyValidations
extend ActiveSupport::Concern
# Generic checks that are run for the updates and deletes of
# node, ways and relations. This code is here to avoid duplication,
# and allow the extension of the checks without having to modify the
# code in 6 places for all the updates and deletes.
# This will throw an exception if there is an inconsistency
def check_update_element_consistency(old, new, user)
if new.id != old.id || new.id.nil? || old.id.nil?
raise OSM::APIPreconditionFailedError, "New and old IDs don't match on #{new.class}. #{new.id} != #{old.id}."
elsif new.version != old.version
raise OSM::APIVersionMismatchError.new(new.id, new.class.to_s, new.version, old.version)
end
check_changeset_consistency(new.changeset, user)
end
# This is similar to above, just some validations don't apply
def check_create_element_consistency(new, user)
check_changeset_consistency(new.changeset, user)
end
##
# subset of consistency checks which should be applied to almost
# all the changeset controller's writable methods.
def check_changeset_consistency(changeset, user)
# check user credentials - only the user who opened a changeset
# may alter it.
if changeset.nil?
raise OSM::APIChangesetMissingError
elsif user.id != changeset.user_id
raise OSM::APIUserChangesetMismatchError
elsif !changeset.open?
raise OSM::APIChangesetAlreadyClosedError, changeset
end
end
end