from roundup.exceptions import Reject
 
def subjectblock(db, cl, nodeid, newvalues):
    ''' reject changes that put the "rejectme" keyword in the subject
    '''
    if 'title' not in newvalues:
        return
 
    if "rejectme" in newvalues['title']:
        raise Reject("subject rejected because keyword rejectme used")
 
def init(db):
    # fire before changes are made
    db.issue.audit('set', subjectblock)