Python Entrouvert

import re

import json

from django.utils.translation import ugettext as _

from django.db import models

from django.core.exceptions import ImproperlyConfigured, ValidationError

from tenant_schemas.models import TenantMixin

from . import app_settings

class Tenant(TenantMixin):

    name = models.CharField(max_length=100, verbose_name=_('name'))

    created_on = models.DateField(auto_now_add=True, verbose_name=_('created on'))

    is_active = models.BooleanField(default=True, blank=True, verbose_name=_('active'))

    # default true, schema will be automatically created and synced when it is saved

    auto_create_schema = False

    def __unicode__(self):

        return u'%s' % self.schema_name

class ClientSetting(models.Model):

    NAME_RE = re.compile(r'^[_A-Z][_A-Z0-9]*$')

    tenant = models.ForeignKey('Tenant', verbose_name=_('tenant'))

    name = models.CharField(max_length=100, verbose_name=_('name'))

    value = models.TextField(verbose_name=_('value'), help_text=_('JSON'))

    def get_json(self):

        return json.loads(self.value)

    def set_json(self, json):

        self.value = json.dumps(json)

    json = property(get_json, set_json)

    def clean(self):

        if not re.match(self.NAME_RE, self.name):

            raise ValidationError('name must be an uppercase variable '

                    'name')

        try:

            json.loads(self.value)

        except ValueError:

            raise ValidationError('invalid JSON document')

        if self.name in dir(app_settings):

            raise ImproperlyConfigured('The setting %r cannot be overridden by tenants' % self.name)