Question

Within the GAE I’m getting an error telling me:

TypeError: get_default_tile() takes exactly 1 argument (2 given)

As you can see the code from my main py file get_default_tile() is being passed only one argument which is name:

 default_tile = self.get_default_tile(name)

The full code follows:

import jinja2   # html template libary
import os

jinja_environment = jinja2.Environment(loader=jinja2.FileSystemLoader(os.path.dirname(__file__)))

import urllib   
import urllib2 
import webapp2

from google.appengine.ext import db
from google.appengine.api import urlfetch


class Default_tiles(db.Model):
  name = db.StringProperty()
  image = db.BlobProperty(default=None)


class MainPage(webapp2.RequestHandler):
  def get(self):

    # this just prints out the url which the user enters into input
    image_name = self.request.get('image_name') 

    template_values = {
        'image_name': image_name,
    }

    template = jinja_environment.get_template('index.html')
    self.response.out.write(template.render(template_values))



class Upload(webapp2.RequestHandler):
  def post(self):

    # get information from form post upload
    image_url = self.request.get('image_url') 
    image_name = self.request.get('image_name')

    # create database entry for uploaded image 
    default_tile = Default_tiles()
    default_tile.name = image_name
    default_tile.image = db.Blob(urlfetch.Fetch(image_url).content)
    default_tile.put()

    self.redirect('/?' + urllib.urlencode({'image_name': image_name}))


class Get_default_tile(webapp2.RequestHandler):
  def get(self):
    name = self.request.get('image_name')
    default_tile = self.get_default_tile(name)

    self.response.headers['Content-Type'] = "image/png"
    self.response.out.write(default_tile.image)

  def get_default_tile(name):
    result = db.GqlQuery("SELECT * FROM Default_tiles WHERE name = :1 LIMIT 1", name).fetch(1)
    if (len(result) > 0):
      return result[0]
    else:
      return None


app = webapp2.WSGIApplication([('/', MainPage),
                               ('/upload', Upload),
                               ('/default_tile_img', Get_default_tile)],
                              debug=True)

Any help would be appreciated.

Answer 1

get_default_tile(): is a member method of class Get_default_tile so you need to define it like this:

def get_default_tile(self, name):

Or if you want it to be a static method:

@staticmethod
def get_default_tile(name):