Question

My coding is:
views

def showThread(request, thread_id)
    post_list     = Post.objects.filter(id = thread_id)
    post_likes    = PostLikes.objects.all()
    return render_to_response('show.html',locals(),context_instance=RequestContext(request))

models:

class Post(models.Model):
        subject = models.CharField(max_length = 250)
        body = models.TextField()
        thread = models.ForeignKey('self', null = True, editable = False )

Show.html:

{% for post in post_list %}
   {{post.id}}{{post.subject}}
{% endfor %}
{% for post_like in post_likes %}
   {% if post_like.post_id == post.id and post_like.user_id == user.id %} 
         U like this post{{post}}
   {% else %}
         {{post}}
   {% endif %}      
{% endfor %} 

In the show.html, else part, it displays the values again and again. But i need only one time.How can i break the for loop when i enter into else condition.Please help me..

Answer 1

You can use the django custom template tag found in this django snippets page. If you have doubts on using it, go to this page to learn about custom template tags.

Then load the template tag in your template using {% load loop_break %}. Then you can break the for loop as given below:

{% for post_like in post_likes %}
    {% if post_like.post_id == post.id and post_like.user_id == user.id %} 
        U like this post{{post}}
    {% else %}
        {{post}}
        {{ forloop|break }}
    {% endif %}
{% endfor %}

Here the for loop will break when it enters the else part.