Appengine retrieve data related to user form submission

Question

Hi,

I had read the docs for Appengine to know how to retrieve data from Models. But i´m missing something..

My models are user and student, where student is a reference property from user.

Users login, fill form with some values and save the data with put(). If you login with [email protected] you get your data or if you login with another email you get the data corresponding to your information sent to db.

Everythin is fine till here. I´m trying to get a PDF and want to get the data from the user loged in.

Example:

class SavePDF(webapp.RequestHandler):
    def post(self):
        user = users.get_current_user()
        if user:
            student= models.Student.all().get()

        p = canvas.Canvas(self.response.out)

        p.drawImage('ipca.jpg', 40, 700)

        p.drawString(50,640, 'Student Info:'  + '%s'  % student.name)   
        p.drawString(50,620, 'Adress:'                 + '%s'  % student.adress)


        p.drawString(50,300, 'PDF updated:%s'  %          str(datetime.date.today()))

        p.showPage()
        self.response.headers['Content-Type'] = 'application/pdf'
        self.response.headers['Content-Disposition'] = 'filename=mypdf.pdf'
        p.save()

What i get here is a user that is not current user. Shows Info about other user. I´ve tried different things but it throws errors. If i try to iterate gives error.

I´m missing something.

Answer 1

If your Student model looks like this:

class Student(db.Model):
    user = db.UserProperty()
    name = db.StringProperty()
    address = db.StringProperty()

Then you probably want something like this:

user = users.get_current_user() 
if user: 
    student = models.Student.all().filter('user =', user).get()