Forming url with id number

[Zeynel]

Hello,

I am working on a simple news site for people to post Sarah Palin
related links. At this point I have a submit page
http://sarah-for-president.appspot.com/submit and a newest page
http://sarah-for-president.appspot.com/newest

But I also want to add a comments page (like in Hacker News) so that
people can comment on each article. I want to use disqus for comments
and the page will look something like this http://sarah-for-president.appspot.com/comments

But I don't understand how I can connect an article with its comments.
Hacker News has urls of this type http://news.ycombinator.com/item?id=2105038

I see in Datastore Viewer that each entry has an id:

ID/Name: id=1
date: 2011-01-14 20:51:28.256421
title: Sarah Palin Wikipedia page
url: http://en.wikipedia.org/wiki/Sarah_Palin

Can you help me understand how to form the urls of the form
http://sarah-for-president.appspot.com/item?id=1

Or if this is not correct, what is the correct way?

This is my app.yaml:

application: sarah-for-president
version: 1
runtime: python
api_version: 1

handlers:
- url: /favicon.ico
static_files: static/images/favicon.ico
upload: static/images/favicon.ico

- url: /.*
script: sarah.py

inbound_services:
- mail

and the code is here: http://pastebin.com/5bnEURhj

(sorry for all the HTML, i am not using templating at this point)

Thanks!

[Zeynel]

I figured that

i_id = item.key().id()

logging.info("i_id is: %s" % item.key().id())

gets the id number. Can anyone help about forming the corresponding
url?

Thanks.

On Jan 14, 7:38 pm, Zeynel <azeyn...@gmail.com> wrote:
> Hello,
>
> I am working on a simple news site for people to post Sarah Palin

> related links. At this point I have a submit pagehttp://sarah-for-president.appspot.com/submitand a newest pagehttp://sarah-for-president.appspot.com/newest

>
> But I also want to add a comments page (like in Hacker News) so that
> people can comment on each article. I want to use disqus for comments

> and the page will look something like thishttp://sarah-for-president.appspot.com/comments

>
> But I don't understand how I can connect an article with its comments.

> Hacker News has urls of this typehttp://news.ycombinator.com/item?id=2105038

>
> I see in Datastore Viewer that each entry has an id:
>
> ID/Name: id=1
> date: 2011-01-14 20:51:28.256421
> title: Sarah Palin Wikipedia page
> url:http://en.wikipedia.org/wiki/Sarah_Palin
>

> Can you help me understand how to form the urls of the formhttp://sarah-for-president.appspot.com/item?id=1

[Zeynel]

I tried this:

self.response.out.write("<ol>")
for item in items:
self.response.out.write("""<li><a href="%s">%s</a><br />
<a href="/item?%s">comments</a></li> """ %
(cgi.escape(item.url),
cgi.escape(item.title), cgi.escape(item.key().id())))
self.response.out.write("</ol>")

but gives this error:

Traceback (most recent call last):
File "C:\Program Files (x86)\Google\google_appengine\google\appengine
\ext\webapp\__init__.py", line 515, in __call__
handler.get(*groups)
File "C:\sarah.py", line 37, in get
(cgi.escape(item.url), cgi.escape(item.title),
cgi.escape(item.key().id())))
File "C:\Python26\lib\cgi.py", line 1023, in escape
s = s.replace("&", "&amp;") # Must be done first!
AttributeError: 'long' object has no attribute 'replace'

Can anyone help?

On Jan 14, 9:10 pm, Zeynel <azeyn...@gmail.com> wrote:
> I figured that
>
>         i_id = item.key().id()
>
>         logging.info("i_id is: %s" % item.key().id())
>
> gets the id number. Can anyone help about forming the corresponding
> url?
>
> Thanks.
>
> On Jan 14, 7:38 pm, Zeynel <azeyn...@gmail.com> wrote:
>
>
>
>
>
>
>
> > Hello,
>
> > I am working on a simple news site for people to post Sarah Palin

> > related links. At this point I have a submit pagehttp://sarah-for-president.appspot.com/submitanda newest pagehttp://sarah-for-president.appspot.com/newest

[Zeynel]

converting the id to string appears to have solved the problem:

self.response.out.write("<ol>")
for item in items:
self.response.out.write("""<li><a href="%s">%s</a><br />

<a href="/item?id=%s">comments</a></li> """ %
(cgi.escape(item.url),
cgi.escape(item.title), cgi.escape(str(item.key().id()))))
self.response.out.write("</ol>")

> > > related links. At this point I have a submit pagehttp://sarah-for-president.appspot.com/submitandanewest pagehttp://sarah-for-president.appspot.com/newest

[djidjadji]

You could use the URL dispatcher to check for validity of the passed
id by making the id part of the URL

http://me-for-president.appspot.com/item/1

in the code

class ItemPage(webapp.RequestHandler):
def get(self, id):
id = int(id)
# rest of the handler

application = webapp.WSGIApplication([('/item/(\d+)', ItemPage)],
debug=True)

def main():
run_wsgi_app(application)

Use some sort of template engine. Much easier if the site or pages gets bigger.

[Zeynel]

On Jan 15, 9:14 am, djidjadji <djidja...@gmail.com> wrote:
> You could use the URL dispatcher to check for validity of the passed
> id by making the id part of the URL
>
> http://me-for-president.appspot.com/item/1
>
> in the code
>
> class ItemPage(webapp.RequestHandler):
>     def get(self, id):
>         id = int(id)
>         # rest of the handler
>
> application = webapp.WSGIApplication([('/item/(\d+)', ItemPage)],
>                                      debug=True)
>

Thanks for this information! Exactly what I was trying to understand.

I changed the handler like this:

class Article(webapp.RequestHandler):

def get(self, id):
id = int(id)

....
self.response.out.write("""<a href="/item/%s">article title</
a> """ %
(id))

and it works fine. But now how do I get the article title from the
other handler where it is inside the for loop. Because in this handler
I cannot use "item.title". What is the way to do this?

Thanks again.

[djidjadji]

First you make an index page containing all the items you want to show
based on a filtering, maybe date.

class ItemIndexPage(webapp.RequestHandler):
def get(self):
items = Item.all().filter(...some filter...).fetch(1000)

self.response.out.write("<ol>")
for item in items:
self.response.out.write("""<li><a href="%s">%s</a><br />

<a href="/item/%s">comments</a></li> """ %

(cgi.escape(item.url),
cgi.escape(item.title), cgi.escape(item.key().id())))
self.response.out.write("</ol>")

And deal with the individual item in the next handler

class ItemPage(webapp.RequestHandler):
def get(self, id):
id = int(id)

item = Item.get_by_id(id)

# rest of the handler

application = webapp.WSGIApplication([('/items',
ItemIndexPage)],('/item/(\d+)', ItemPage)],
debug=True)

[Zeynel]

On Jan 15, 11:18 am, djidjadji <djidja...@gmail.com> wrote:
> And deal with the individual item in the next handler
>
> class ItemPage(webapp.RequestHandler):
>   def get(self, id):
>     id = int(id)
>     item = Item.get_by_id(id)
>     # rest of the handler
>

Thanks for your help. This works:

class Article(webapp.RequestHandler):

def get(self, id):
id = int(id)
item = Item.get_by_id(id)

...

self.response.out.write("""<a href="%s">%s</a> """ %
(cgi.escape(item.url),
cgi.escape(item.title)))

[Nick Johnson (Google)]

Hi Zeynel,

You might want to read my blog post about using Disqus on App Engine: http://blog.notdot.net/2009/10/Blogging-on-App-Engine-part-6-Comments-and-Search

You don't need to do anything special - just create one page for each item that people can comment on, and embed the Disqus code in that page.

-Nick Johnson

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Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number: 368047

[Zeynel]

Thanks. Disqus works great but I am having a styling issue that may be
my fault. I use <a href="/item/%s#disqus_thread"></a> and the count
shows as "x comments". In other words, disqus does not recognize my
link text; even if it ıs blank it shows "x comments" like in this page
http://sarah-for-president.appspot.com/

On Jan 16, 10:04 pm, "Nick Johnson (Google)" <nick.john...@google.com>
wrote:
> Hi Zeynel,
>
> You might want to read my blog post about using Disqus on App Engine:http://blog.notdot.net/2009/10/Blogging-on-App-Engine-part-6-Comments...

>
> You don't need to do anything special - just create one page for each item
> that people can comment on, and embed the Disqus code in that page.
>
> -Nick Johnson
>
>
>
>
>
>
>
>
>
> On Sat, Jan 15, 2011 at 11:38 AM, Zeynel <azeyn...@gmail.com> wrote:
> > Hello,
>
> > I am working on a simple news site for people to post Sarah Palin
> > related links. At this point I have a submit page

> >http://sarah-for-president.appspot.com/submitand a newest page

> > google-appengi...@googlegroups.com<google-appengine%2Bunsubscrib e...@googlegroups.com>
> > .