Question

I am doing a project in google app engine. Python is used in the back end. I have a datastore table “Data” with following attributes,

class Data(db.Model):
  url = db.StringProperty
  code = db.StringProperty
  turl = db.StringProperty

I used following lines of code to get all values from the table,

x = Data.all()
        x = db.GqlQuery("SELECT * FROM Data")
        ourl = x.fetch(10)

When i print it using the following code,

for p in ourl:
          print "%s %s, %s " % (p.url, p.code, p.turl)

i got 10 times the following message,

<class 'google.appengine.ext.db.StringProperty'> <class 'google.appengine.ext.db.StringProperty'>, <class 'google.appengine.ext.db.StringProperty'> 

I cannot get the real values of url,code and turl. What to do with this code??

Answer 1

In your class Data you forgot parenthesis to create instances of property.

class Data(db.Model):
  url = db.StringProperty()
  code = db.StringProperty()
  turl = db.StringProperty()

Currently your simply copy the class db.StringProperty in your attributes defined in your class Data