view share/roundup/templates/minimal/schema.py @ 5525:bb7865241f8a

Make CSV import/export compatible across Python versions (also RDBMS journals) (issue 2550976, issue 2550975). The roundup-admin export and import commands are used for migrating between different database backends. It is desirable that they should be usable also for migrations between Python 2 and Python 3, and in some cases (e.g. with the anydbm backend) this may be required. To be usable for such migrations, the format of the generated CSV files needs to be stable, meaning the same as currently used with Python 2. The export process uses repr() to produce the fields in the CSV files and eval() to convert them back to Python data structures. repr() of strings with non-ASCII characters produces different results for Python 2 and Python 3. This patch adds repr_export and eval_import functions to roundup/anypy/strings.py which provide the required operations that are just repr() and eval() in Python 2, but are more complicated in Python 3 to use data representations compatible with Python 2. These functions are then used in the required places for export and import. repr() and eval() are also used in storing the dict of changed values in the journal for the RDBMS backends. It is similarly desirable that the database be compatible between Python 2 and Python 3, so that export and import do not need to be used for a migration between Python versions for non-anydbm back ends. Thus, this patch changes rdbms_common.py in the places involved in storing journals in the database, not just in those involved in import/export. Given this patch, import/export with non-ASCII characters appear based on some limited testing to work across Python versions, and an instance using the sqlite backend appears to be compatible between Python versions without needing import/export, *if* the sessions/otks databases (which use anydbm) are deleted when changing Python version.
author Joseph Myers <jsm@polyomino.org.uk>
date Sun, 02 Sep 2018 23:48:04 +0000
parents a403c29ffaf9
children 94a7669677ae
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#
# TRACKER SCHEMA
#

# Class automatically gets these properties:
#   creation = Date()
#   activity = Date()
#   creator = Link('user')
#   actor = Link('user')

# The "Minimal" template gets only one class, the required "user"
# class. That's it. And even that has the bare minimum of properties.

# Note: roles is a comma-separated string of Role names
user = Class(db, "user", username=String(), password=Password(),
    address=String(), alternate_addresses=String(), roles=String())
user.setkey("username")
db.security.addPermission(name='Register', klass='user',
                          description='User is allowed to register new user')
#
# TRACKER SECURITY SETTINGS
#
# See the configuration and customisation document for information
# about security setup.

#
# REGULAR USERS
#
# Give the regular users access to the web and email interface
db.security.addPermissionToRole('User', 'Web Access')
db.security.addPermissionToRole('User', 'Email Access')

# May users view other user information?
# Comment these lines out if you don't want them to
p = db.security.addPermission(name='View', klass='user', 
    properties=('id', 'username'))
db.security.addPermissionToRole('User', p)

# Users should be able to edit their own details -- this permission is
# limited to only the situation where the Viewed or Edited item is their own.
def own_record(db, userid, itemid):
    '''Determine whether the userid matches the item being accessed.'''
    return userid == itemid
p = db.security.addPermission(name='View', klass='user', check=own_record,
    description="User is allowed to view their own user details")
db.security.addPermissionToRole('User', p)
p = db.security.addPermission(name='Edit', klass='user', check=own_record,
    properties=('username', 'password', 'address', 'alternate_addresses'),
    description="User is allowed to edit their own user details")
db.security.addPermissionToRole('User', p)

#
# ANONYMOUS USER PERMISSIONS
#
# Let anonymous users access the web interface. Note that almost all
# trackers will need this Permission. The only situation where it's not
# required is in a tracker that uses an HTTP Basic Authenticated front-end.
db.security.addPermissionToRole('Anonymous', 'Web Access')

# Let anonymous users access the email interface (note that this implies
# that they will be registered automatically, hence they will need the
# "Create" user Permission below)
db.security.addPermissionToRole('Anonymous', 'Email Access')

# Assign the appropriate permissions to the anonymous user's
# Anonymous Role. Choices here are:
# - Allow anonymous users to register
db.security.addPermissionToRole('Anonymous', 'Register', 'user')

# vim: set et sts=4 sw=4 :

Roundup Issue Tracker: http://roundup-tracker.org/