When I try the straight code from the "Using Images" (http://
code.google.com/appengine/docs/images/usingimages.html) that writes
the html directly from the main.py file, my image display works. When
I use templates that are separate from the main.py file, the images
don't display even though they are in the datastore and show up when I
view the source of the html page.
Please look at my code and tell me if I am missing a call or if the
MainPage class needs a reference for the image...
Template Page:
<img src='/image?img_id={{ greeting.key }}'></img>
What it is outputting:
<img src='/image?img_id=agtqZW50ZXN0bGl2ZXIOCxIIR3JlZXRpbmcYBgw'></
img>
The main.py is below. I am getting the same results both in dev and
on my testing spot on GAE. Thanks in advance for your help!
Jen
********
import cgi
import datetime
import os
import logging
from google.appengine.ext import db
from google.appengine.api import users
from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app
from google.appengine.api import images
from google.appengine.ext.webapp import template
logging.getLogger().setLevel(logging.DEBUG)
class Greeting(db.Model):
author = db.UserProperty()
fullname = db.StringProperty()
know = db.StringProperty()
avatar = db.BlobProperty()
year = db.StringProperty()
title = db.StringProperty()
content = db.TextProperty()
date = db.DateTimeProperty(auto_now_add=True)
class MainPage(webapp.RequestHandler):
def get(self):
greetings_query = Greeting.all().order('-date')
greetings = greetings_query.fetch(10)
if users.get_current_user():
url = users.create_logout_url(self.request.uri)
url_linktext = 'Logout'
path = os.path.join(os.path.dirname(__file__), 'post.html')
else:
url = users.create_login_url(self.request.uri)
url_linktext = 'Login'
path = os.path.join(os.path.dirname(__file__), 'index.html')
template_values = {
'greetings': greetings,
'url': url,
'url_linktext': url_linktext,
}
self.response.out.write(template.render(path, template_values))
class Image (webapp.RequestHandler):
def get(self):
greeting = db.get(self.request.get("img_id"))
if greeting.avatar:
self.response.headers['Content-Type'] = "image/png"
self.response.out.write(greeting.avatar)
else:
self.response.out.write("No image")
class Guestbook(webapp.RequestHandler):
def post(self):
greeting = Greeting()
if users.get_current_user():
greeting.author = users.get_current_user()
greeting.fullname = self.request.get('fullname')
greeting.know = self.request.get('know')
avatar = images.resize(self.request.get('img'), 32, 32)
greeting.avatar = db.Blob(avatar)
greeting.year = self.request.get('year')
greeting.title = self.request.get('title')
greeting.content = self.request.get('content')
greeting.put()
self.redirect('/')
application = webapp.WSGIApplication(
[('/', MainPage),
('/img', Image),
('/sign', Guestbook)],
debug=True)
def main():
run_wsgi_app(application)
if __name__ == '__main__':
main()
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