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annotate legacy/management/commands/import_old_potd.py @ 581:ee87ea74d46b

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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
rev   line source
bgneal@535 1 """
bgneal@535 2 import_old_potd.py - For importing POTD's from SG101 1.0 as csv files.
bgneal@535 3
bgneal@535 4 """
bgneal@535 5 from __future__ import with_statement
bgneal@535 6 import csv
bgneal@535 7 import optparse
bgneal@535 8 import sys
bgneal@535 9 from datetime import datetime
bgneal@535 10
bgneal@535 11 from django.core.management.base import LabelCommand, CommandError
bgneal@535 12 from django.contrib.auth.models import User
bgneal@535 13
bgneal@535 14 from potd.models import Photo
bgneal@535 15 from legacy.phpbb import unescape
bgneal@535 16 import legacy.data
bgneal@535 17
bgneal@535 18
bgneal@535 19 ID_OFFSET = 100
bgneal@535 20
bgneal@535 21
bgneal@535 22 class PathError(Exception):
bgneal@535 23 pass
bgneal@535 24
bgneal@535 25 def convert_path(old_path):
bgneal@535 26 """
bgneal@535 27 Converts the old POTD path to a new one.
bgneal@535 28
bgneal@535 29 """
bgneal@535 30 if old_path.startswith('images/potd/'):
bgneal@535 31 return "potd/1.0/%s" % old_path[12:]
bgneal@535 32 else:
bgneal@535 33 raise PathError("Unknown path %s" % old_path)
bgneal@535 34
bgneal@535 35
bgneal@535 36 class Command(LabelCommand):
bgneal@535 37 args = '<filename filename ...>'
bgneal@535 38 help = "Imports POTD's from the old database in CSV format"
bgneal@535 39 option_list = LabelCommand.option_list + (
bgneal@535 40 optparse.make_option("-p", "--progress", action="store_true",
bgneal@535 41 help="Output a . after every 20 items to show progress"),
bgneal@535 42 )
bgneal@535 43
bgneal@535 44 def handle_label(self, filename, **options):
bgneal@535 45 """
bgneal@535 46 Process each line in the CSV file given by filename by
bgneal@535 47 creating a new Photo
bgneal@535 48
bgneal@535 49 """
bgneal@535 50 self.show_progress = options.get('progress')
bgneal@535 51 self.users = {}
bgneal@535 52
bgneal@535 53 try:
bgneal@535 54 with open(filename, "rb") as f:
bgneal@535 55 self.reader = csv.DictReader(f)
bgneal@535 56 num_rows = 0
bgneal@535 57 try:
bgneal@535 58 for row in self.reader:
bgneal@535 59 self.process_row(row)
bgneal@535 60 num_rows += 1
bgneal@535 61 if self.show_progress and num_rows % 20 == 0:
bgneal@535 62 sys.stdout.write('.')
bgneal@535 63 sys.stdout.flush()
bgneal@535 64 except csv.Error, e:
bgneal@535 65 raise CommandError("CSV error: %s %s %s" % (
bgneal@535 66 filename, self.reader.line_num, e))
bgneal@535 67
bgneal@535 68 print
bgneal@535 69
bgneal@535 70 except IOError:
bgneal@535 71 raise CommandError("Could not open file: %s" % filename)
bgneal@535 72
bgneal@535 73 def process_row(self, row):
bgneal@535 74 """
bgneal@535 75 Process one row from the CSV file: create a Photo object for
bgneal@535 76 the row and save it in the database.
bgneal@535 77
bgneal@535 78 """
bgneal@535 79 try:
bgneal@535 80 submitter = self._get_user(row['submitted_by'].decode('latin-1'))
bgneal@535 81 except User.DoesNotExist:
bgneal@535 82 print "Could not find user %s for potd %s; skipping." % (
bgneal@535 83 row['submitted_by'], row['pid'])
bgneal@535 84 return
bgneal@535 85
bgneal@535 86 desc = row['description'].decode('latin-1').replace('\n', '\n<br />')
bgneal@535 87
bgneal@535 88 try:
bgneal@535 89 photo = Photo(
bgneal@535 90 id=int(row['pid']) + ID_OFFSET,
bgneal@535 91 photo=convert_path(row['photo_path']),
bgneal@535 92 thumb=convert_path(row['thumb_path']),
bgneal@535 93 caption=unescape(row['title'].decode('latin-1')),
bgneal@535 94 description=desc,
bgneal@535 95 user=submitter,
bgneal@535 96 date_added=datetime.strptime(row['date_added'],
bgneal@535 97 "%Y-%m-%d %H:%M:%S"),
bgneal@535 98 potd_count=int(row['chosen_count']))
bgneal@535 99 except PathError, ex:
bgneal@535 100 self.stderr.write("\n%s, skipping\n" % ex)
bgneal@535 101 return
bgneal@535 102
bgneal@535 103 photo.save()
bgneal@535 104
bgneal@535 105 def _get_user(self, username):
bgneal@535 106 """
bgneal@535 107 Returns the user object with the given username.
bgneal@535 108 Throws User.DoesNotExist if not found.
bgneal@535 109
bgneal@535 110 """
bgneal@535 111 try:
bgneal@535 112 return self.users[username]
bgneal@535 113 except KeyError:
bgneal@535 114 pass
bgneal@535 115
bgneal@535 116 try:
bgneal@535 117 user = User.objects.get(username=username)
bgneal@535 118 except User.DoesNotExist:
bgneal@535 119 old_name = username.lower()
bgneal@535 120 try:
bgneal@535 121 user = User.objects.get(
bgneal@535 122 username=legacy.data.KNOWN_USERNAME_CHANGES[old_name])
bgneal@535 123 except KeyError:
bgneal@535 124 raise User.DoesNotExist
bgneal@535 125
bgneal@535 126 self.users[username] = user
bgneal@535 127 return user