Merge pull request #1998 from normanjaeckel/HelpText

Updated start script help text and custom commands. Fixed #1987.

openslides/__main__.py

@@ -51,12 +51,22 @@ def get_parser():
     # Init parser
     description = 'Start script for OpenSlides.'
     if 'manage.py' not in sys.argv[0]:
-        description += (' If it is called without any argument, this will be '
+        description += """
-                        'treated as if it is called with the "start" subcommand. '
+            If it is called without any argument, this will be treated as
-                        'That means OpenSlides will setup default settings and '
+            if it is called with the 'start' subcommand. That means
-                        'database, start the tornado webserver, launch the '
+            OpenSlides will setup default settings and database, start the
-                        'default web browser and open the webinterface.')
+            tornado webserver, launch the default web browser and open the
-    parser = ExceptionArgumentParser(description=description)
+            webinterface.
+            """
+    epilog = """
+        There are some more subcommands available. They belong to Django's
+        command-line utility for administrative tasks. Type '%(prog)s help'
+        (without the two hyphen-minus characters) to list them all. Type
+        '%(prog)s help <subcommand>' for help on a specific subcommand.
+        """
+    parser = ExceptionArgumentParser(
+        description=description,
+        epilog=epilog)
 
     # Add version argument
     parser.add_argument(
@@ -71,14 +81,18 @@ def get_parser():
         title='Available subcommands',
         description="Type '%s <subcommand> --help' for help on a "
                     "specific subcommand." % parser.prog,
-        help='You can choose only one subcommand at once.')
+        help='You can choose only one subcommand at once.',
+        metavar='')
 
     # Subcommand start
+    start_help = (
+        'Setup settings and database, start tornado webserver, launch the '
+        'default web browser and open the webinterface. The environment '
+        'variable DJANGO_SETTINGS_MODULE is ignored.')
     subcommand_start = subparsers.add_parser(
         'start',
-        help='Setup settings and database, start tornado webserver, launch the '
+        description=start_help,
-             'default web browser and open the webinterface. The environment '
+        help=start_help)
-             'variable DJANGO_SETTINGS_MODULE is ignored.')
     subcommand_start.add_argument(
         '--no-browser',
         action='store_true',
@@ -92,12 +106,14 @@ def get_parser():
     subcommand_start.add_argument(
         '--development',
         action='store_true',
-        help='Command for development purposes.')
+        help='Option for development purposes.')
 
     # Subcommand createsettings
+    createsettings_help = 'Creates the settings file.'
     subcommand_createsettings = subparsers.add_parser(
         'createsettings',
-        help='Create the settings file.')
+        description=createsettings_help,
+        help=createsettings_help)
     subcommand_createsettings.set_defaults(callback=createsettings)
     subcommand_createsettings.add_argument(
         '--settings_path',
@@ -107,7 +123,21 @@ def get_parser():
     subcommand_createsettings.add_argument(
         '--development',
         action='store_true',
-        help='Command for development purposes.')
+        help='Option for development purposes.')
+
+    # Help text for several Django subcommands
+    django_subcommands = (
+        ('backupdb', 'Backups the SQLite3 database.'),
+        ('createsuperuser', 'Creates or resets the admin user.'),
+        ('migrate', 'Updates database schema.'),
+        ('runserver', 'Starts the Tornado webserver.'),
+    )
+    for django_subcommand, help_text in django_subcommands:
+        subparsers._choices_actions.append(
+            subparsers._ChoicesPseudoAction(
+                django_subcommand,
+                (),
+                help_text))
 
     return parser
 

openslides/core/management/commands/backupdb.py

@@ -1,21 +1,25 @@
 import shutil
-from optparse import make_option  # TODO: Use argpase in Django 1.8
 
-from django.core.management.base import CommandError, NoArgsCommand
+from django.core.management.base import BaseCommand, CommandError
 from django.db import connection, transaction
 
 from openslides.utils.main import get_database_path_from_settings
 
 
-class Command(NoArgsCommand):
+class Command(BaseCommand):
     """
-    Commands to create or reset the adminuser
+    Command to backup the SQLite3 database.
     """
-    option_list = NoArgsCommand.option_list + (
+    help = 'Backups the SQLite3 database.'
-        make_option('--path', dest='path'),
-    )
 
-    def handle_noargs(self, **options):
+    def add_arguments(self, parser):
+        parser.add_argument(
+            '--path',
+            default='database_backup.sqlite',
+            help='Path for the backup file (Default: database_backup.sqlite).'
+        )
+
+    def handle(self, *args, **options):
         path = options.get('path')
 
         @transaction.atomic

openslides/core/management/commands/runserver.py

@@ -21,6 +21,8 @@ class Command(_Command):
 
     The Code is from django 1.9
     """
+    help = 'Starts the Tornado webserver.'
+
     # TODO: do not start tornado when the settings says so
 
     def inner_run(self, *args, **options):

openslides/users/management/commands/createsuperuser.py

@@ -1,13 +1,15 @@
-from django.core.management.base import NoArgsCommand
+from django.core.management.base import BaseCommand
 
 from ...models import User
 
 
-class Command(NoArgsCommand):
+class Command(BaseCommand):
     """
     Command to create or reset the admin user.
     """
-    def handle_noargs(self, **options):
+    help = 'Creates or resets the admin user.'
+
+    def handle(self, *args, **options):
         created = User.objects.create_or_reset_admin_user()
         if created:
             self.stdout.write('Admin user successfully created.')