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Python

Posted by Athoug Alsoughayer
Athoug Alsoughayer
7,949 Points

Getting single post

How can we get a single post when clicked on view? I tried doing something along the line of getting post.id however I get an error. Can someone help me or guide me on how to access single posts?

in the template file stream.html the link is as follows:

<a href="{{ url_for('singlepost', post=post.id) }}"> 
            {{ post.content}} 
                    </a>

While in the app.py view function is as follows:

@app.route('/post')
@app.route('/post/<int:postid>')
def singlepost(postid=None):
    post = models.Post.select().where(models.Post.id == postid).get()
    return render_template("singlepost.html", post=post)

[MOD: fix codeblock formatting -cf]

3 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,468 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,468 Points

The issue appears to be a disagreement between your url_for arguments and the app.route parameters:

Your route is @app.route('/post/<int:postid>'). parameter name is postid

Your url_for has {{ url_for('singlepost', post=post.id) }}. argument name is post should be postid

Change url_for usage to {{ url_for('singlepost', postid=post.id) }}

Athoug Alsoughayer
Athoug Alsoughayer
7,949 Points

It worked thank you!

Josh Keenan
Josh Keenan
20,315 Points
Josh Keenan
Josh Keenan
20,315 Points

Is this in reference to Flask? Post the code you're having a problem with here as well!

Athoug Alsoughayer
Athoug Alsoughayer
7,949 Points

Yes, it's reference to flask. Just added the code. sorry for the terrible mark down first time poster)

Josh Keenan
Josh Keenan
20,315 Points
Josh Keenan
Josh Keenan
20,315 Points

In the html, there's one problem

<a href="{{ url_for('singlepost', post=post.id) }}"> {{ post.content}} </a> 

<a href="{{ url_for('singlepost', post=post.id) }}"> {{ post.content }} </a>

I added a space at the end of the {{ post.content }} as that would have caused a problem I think;

Next problem, add the get and post methods to the view.

@app.route('/post/<int:postid>') 
def singlepost(postid=None): 
  post = models.Post.select().where(models.Post.id == post_id) # <-- that is a guess, but I think it will fix your problem 
  return render_template("singlepost.html", post=post)

You didn't need the .get() IF you are only displaying posts, if you are trying to make a view for creating posts this doesn't work at all! Otherwise it's fine! Post to this thread again if you need any more help!

Athoug Alsoughayer
Athoug Alsoughayer
7,949 Points

Thank you! I managed to do it using the request function. But thank you so much!