83 lines
2.8 KiB
Python
83 lines
2.8 KiB
Python
# This file is part of k4ever, a point-of-sale system
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# Contact............ <k4ever@lists.someserver.de>
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# Website............ http://k4ever.someserver.de/
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# Bug tracker........ http://k4ever.someserver.de/report
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#
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# Licensed under GNU Affero General Public License v3 or later
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from django.db import models
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from django.db.models.signals import post_save
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from django.contrib.auth.models import User
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from decimal import Decimal
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class UserProfile(models.Model):
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""" Contains data for a user, especially the account balance. """
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user = models.ForeignKey(User, unique=True)
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balance = models.DecimalField(max_digits=9, decimal_places=2, default=Decimal(0))
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balance.has_negative_filter = True
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def balance_negative(self):
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return (self.balance < 0)
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def __unicode__(self):
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return "%s (Kontostand: %s)" % (self.user ,self.balance)
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def createUserProfile(sender, instance, created, **kwargs):
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""" Hook to create a new :class:`UserProfile` when the user is created. """
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if created:
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profile = UserProfile()
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profile.user = instance
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profile.save()
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post_save.connect(createUserProfile, sender=User)
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class Plugin(models.Model):
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""" This Model contains a plugin and its configuration.
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A Plugin consists of its own information (name, author, version
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and description, which are displayed on the plugin
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selection page), a configuration of what a plugin is allowed to do
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and what not and an own user for authentication against the
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API.
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:attr:`uniqueAuthblob` is used if the :class:`Plugin` has to uniquely
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identify a user by his/her :attr:`authblob <PluginPermission.authblob>`.
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The other attributes are used for plugin/user read/write access to the
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authblob.
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"""
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user = models.ForeignKey(User, unique=True)
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# plugin info
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name = models.CharField(max_length=40)
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author = models.CharField(max_length=40)
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version = models.CharField(max_length=40)
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descr = models.TextField(default='')
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# plugin config
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uniqueAuthblob = models.BooleanField(default=False)
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userCanWriteAuthblob = models.BooleanField(default=True)
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maxLinesPerAuthblob = models.IntegerField(default=0)
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# automatically set when write is allowed
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userCanReadAuthblob = models.BooleanField(default=True)
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pluginCanWriteAuthblob = models.BooleanField(default=False)
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pluginCanReadAuthblob = models.BooleanField(default=False)
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def __unicode__(self):
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return self.name
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class PluginPermission(models.Model):
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""" States that a user allows access to his/her account to a :class:`Plugin`.
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The :attr:`authblob` can be used by the Plugin to store
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authentication data, e.g. a barcode or hashed password.
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"""
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user = models.ForeignKey(User)
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plugin = models.ForeignKey('Plugin')
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#: authblob which holds arbitrary authentication data.
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authblob = models.TextField(default='')
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def __unicode__(self):
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return "%s allows %s" % (self.user, self.plugin)
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