# runs after the job (and after the default post-filter)

def validate_input(trans, error_map, param_values, page_param_map):
    dbkeys = set()
    tracks = param_values['tracks']
    for track in tracks:
        if track['input']:
            dbkeys.add(track['input'].dbkey)
    if len(dbkeys) > 1:
        # FIXME: Should be able to assume error map structure is created
        if 'tracks' not in error_map:
            error_map['tracks'] = [dict() for t in tracks]
            for i in range(len(tracks)):
                error_map['tracks'][i]['input'] = \
                    "All datasets must belong to same genomic build"