Mercurial > public > sg101
diff legacy/management/commands/import_old_potd.py @ 581:ee87ea74d46b
For Django 1.4, rearranged project structure for new manage.py.
author | Brian Neal <bgneal@gmail.com> |
---|---|
date | Sat, 05 May 2012 17:10:48 -0500 |
parents | gpp/legacy/management/commands/import_old_potd.py@4021ea1045f7 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/legacy/management/commands/import_old_potd.py Sat May 05 17:10:48 2012 -0500 @@ -0,0 +1,127 @@ +""" +import_old_potd.py - For importing POTD's from SG101 1.0 as csv files. + +""" +from __future__ import with_statement +import csv +import optparse +import sys +from datetime import datetime + +from django.core.management.base import LabelCommand, CommandError +from django.contrib.auth.models import User + +from potd.models import Photo +from legacy.phpbb import unescape +import legacy.data + + +ID_OFFSET = 100 + + +class PathError(Exception): + pass + +def convert_path(old_path): + """ + Converts the old POTD path to a new one. + + """ + if old_path.startswith('images/potd/'): + return "potd/1.0/%s" % old_path[12:] + else: + raise PathError("Unknown path %s" % old_path) + + +class Command(LabelCommand): + args = '<filename filename ...>' + help = "Imports POTD's from the old database in CSV format" + option_list = LabelCommand.option_list + ( + optparse.make_option("-p", "--progress", action="store_true", + help="Output a . after every 20 items to show progress"), + ) + + def handle_label(self, filename, **options): + """ + Process each line in the CSV file given by filename by + creating a new Photo + + """ + self.show_progress = options.get('progress') + self.users = {} + + try: + with open(filename, "rb") as f: + self.reader = csv.DictReader(f) + num_rows = 0 + try: + for row in self.reader: + self.process_row(row) + num_rows += 1 + if self.show_progress and num_rows % 20 == 0: + sys.stdout.write('.') + sys.stdout.flush() + except csv.Error, e: + raise CommandError("CSV error: %s %s %s" % ( + filename, self.reader.line_num, e)) + + print + + except IOError: + raise CommandError("Could not open file: %s" % filename) + + def process_row(self, row): + """ + Process one row from the CSV file: create a Photo object for + the row and save it in the database. + + """ + try: + submitter = self._get_user(row['submitted_by'].decode('latin-1')) + except User.DoesNotExist: + print "Could not find user %s for potd %s; skipping." % ( + row['submitted_by'], row['pid']) + return + + desc = row['description'].decode('latin-1').replace('\n', '\n<br />') + + try: + photo = Photo( + id=int(row['pid']) + ID_OFFSET, + photo=convert_path(row['photo_path']), + thumb=convert_path(row['thumb_path']), + caption=unescape(row['title'].decode('latin-1')), + description=desc, + user=submitter, + date_added=datetime.strptime(row['date_added'], + "%Y-%m-%d %H:%M:%S"), + potd_count=int(row['chosen_count'])) + except PathError, ex: + self.stderr.write("\n%s, skipping\n" % ex) + return + + photo.save() + + def _get_user(self, username): + """ + Returns the user object with the given username. + Throws User.DoesNotExist if not found. + + """ + try: + return self.users[username] + except KeyError: + pass + + try: + user = User.objects.get(username=username) + except User.DoesNotExist: + old_name = username.lower() + try: + user = User.objects.get( + username=legacy.data.KNOWN_USERNAME_CHANGES[old_name]) + except KeyError: + raise User.DoesNotExist + + self.users[username] = user + return user