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from django.db import models');document.writeln('from django.utils.translation import ugettext_lazy as _');document.writeln('from django.utils.http import int_to_base36 as getTinyKey');document.writeln('');document.writeln('');document.writeln('');document.writeln('class ShortUrl(models.Model):');document.writeln('    url = models.URLField(_('URL'),verify_exists=False,blank=False,null=False,max_length=255)');document.writeln('    tinykey = models.CharField(_('Tiny Key'),max_length=20,blank=True,editable=False)');document.writeln('    contor = models.IntegerField(_('CONTOR'),default=0)');document.writeln('    crdate = models.DateTimeField(_('created'), auto_now_add=True)');document.writeln('');document.writeln('    class Meta:');document.writeln('        verbose_name = _('URL')');document.writeln('        verbose_name_plural = _('URLs')');document.writeln('        db_table = 'urls'');document.writeln('        ordering = ('-id',)');document.writeln('');document.writeln('    def __str__(self):');document.writeln('        return u'%s' % self.url');document.writeln('');document.writeln('');document.writeln('    def save(self):');document.writeln('        """');document.writeln('        from shorturl.settings import URL_RESTRICTS');document.writeln('        import re');document.writeln('        for pattern in URL_RESTRICTS:');document.writeln('            if re.match(pattern, self.url, re.I):');document.writeln('                raise Exception('URL restricted')');document.writeln('        """');document.writeln('        super(ShortUrl, self).save()');document.writeln('        try:');document.writeln('            self.tinykey = getTinyKey(self.id)');document.writeln('            super(ShortUrl, self).save()');document.writeln('        except:');document.writeln('            super(ShortUrl, self).delete()');document.writeln('
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