To retrieve data from django database and display in table

python django sqlite

41,534

I got the answer. It is working fine now.

Views.py:

def displaytrans(request):
    TransType.objects.all()
    info = TransType.objects.all()
    info2 = Trans.objects.all()
    print info
    bookdata = { "detail" : info, "details" : info2 }
    print bookdata
    resp =  render_to_response("account/displaytrans.html", bookdata, context_instance=Context(request))
    return resp

displaytrans.html:

<!doctype html>
<html>
  <body>

    <table border="1" style="width:800px">
      <tr>
        <td>  {% for s in details %} </td>
        <td>   {{ s.script }} </td>
      </tr>
      <tr> 
        <td>   {{ s.transtype_id}} </td>
        {% endfor %} 
      </tr>         
    </table>
  </body>
</html>

url.py:

url(r'^displaytrans/$', 'booki.account.views.displaytrans', name='displaytrans'),

41,534

Author by

user1862399

Updated on November 05, 2020

Comments

user1862399 over 3 years

I am trying to retrieve data from db in django. I want to display it in a table. I am getting an error as:\

coercing to Unicode: need string or buffer, TransType found

There are two models in my Models.py file:

class TransType(models.Model):
  name = models.TextField()
  created = models.DateTimeField(auto_now_add = True)
  updated = models.DateTimeField(auto_now = True) 
  def __unicode__(self):
      return self.name

class Trans(models.Model):
  transtype = models.ForeignKey(TransType)
  script = models.CharField(max_length=200)
  created = models.DateTimeField(auto_now_add = True)
  updated = models.DateTimeField(auto_now = True) 
  class Meta:
        unique_together = (("transtype", "script"),)
  def __unicode__(self):
      return self.transtype`

My views.py file

def updatetrans(request):
  json_data=open('/home/ttt/Ali/a.json').read()
  data = json.loads(json_data)
  for pk, pv in data.iteritems():
        for k,v in pv.iteritems():
              try:
                    trans_type = TransType.objects.get_or_create(name=k)
                    trans = Trans()
                    trans.transtype_id = trans_type[0].id
                    if isinstance(pv[k], basestring):
                          script = pv[k]
                    else:
                          print "****** List ****"
                          script = pv[k][1]
                    trans.script = script
                    trans.save()
                    print " Inserted ==>", script
              except Exception, e:
                    print e
                    #print "Not inserted ==>", pv[k][1]
                    pass
  #return HttpResponse("Done")
  info = TransType.objects.all()
  info2 = Trans.objects.all()
  bookdata = { "details" : info, "details" : info2 }
  print bookdata
  return render_to_response("account/updatetrans.html", bookdata, context_instance=Context(request))

My url.py file

url(r'^updatetrans/$', 'booki.account.views.updatetrans', name='updatetrans'),

My updatetrans.html file

{% load i18n %}
<!doctype html>
<html>
<body>

<button type="button" onclick="alert('Hello world!')">Click Me!</button>
<table border="1" style="width:800px">
<tr><td>    
  {% for s in details %}
        {{ s.script }}
  {% endfor %} 
</td> 
<td>     
  {% for n in detail %}
        {{ n.name }}
  {% endfor %} 
</td> 

</tr>

</table>
</body>
</html>

Plz help....

Traceback

Environment: Request Method: GET

enter code here


Django Version: 1.3
Python Version: 2.7.3
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.admin',
 'django.contrib.messages',
 'south',
 'booki.editor',
 'booki.account',
 'booki.reader',
 'booki.portal',
 'booki.messaging',
 'sputnik',
 'booktypecontrol']
 Installed Middleware:
 ('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.locale.LocaleMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.middleware.transaction.TransactionMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware')

 Traceback:
 File "/home/ttt/abc_booktype/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 111. response = callback(request, *callback_args, **callback_kwargs)

 File "/home/ttt/abc_booktype/Booktype/lib/booki/account/views.py" in updatetrans 808.print bookdata

 File "/home/ttt/abc_booktype/local/lib/python2.7/site-packages/django/db/models/query.py" in __repr__72. return repr(data)

 File "/home/ttt/abc_booktype/local/lib/python2.7/site-packages/django/db/models/base.py" in __repr__370. u = unicode(self)

 Exception Type: TypeError at /accounts/updatetrans/
 Exception Value: coercing to Unicode: need string or buffer, TransType found