Using same models for different webpages

Question

So I have a Topic.

class Topic(models.Model):
    topic_choices = (
                    ('t_topic', 't_topic',),
                    ('f_topic', 'f_topic',)
    )
    text = models.CharField(max_length=200)
    date_added = models.DateTimeField(auto_now_add=True)
    owner = models.ForeignKey(User, on_delete=models.CASCADE) 
    type = models.CharField(max_length=100, choices=topic_choices)

    def __str__(self):
        return self.text 

The topic is retrieved and displayed based on the date it was created.

def topics(request):
    """Show all topics """
    topics = Topic.objects.order_by('date_added')
    context = {'topics': topics}
    return render(request, 'learning_logs/topics.html', context)

What I would like to do is to have the Topic somehow distinguished based on which web page it was created from.

And then I want the same topic to be displayed on the same webpage.

As you can see here, below. The same topic is displayed on topic.html and f_topic.html because the same topic_id is used.

I want to have it so that if the topic was created on topic.html then it is displayed on topic.html. If it is created on f_topic.html then it is displayed on f_topic.html.

def topic(request, topic_id, type):
    topic = Topic.objects.get(id=topic_id, type='t_topic')
    entries = topic.entry_set.order_by('-date_added')
    images = Image.objects.filter(imgtopic__in=entries)
    context = {'topic': topic, 'entries': entries, 'images': images}
    return render(request, 'learning_logs/topic.html', context)

def f_topic(request, topic_id):
    topic = Topic.objects.get(id = topic_id)
    entries = topic.entry_set.order_by('-date_added')
    images = Image.objects.filter(imgtopic__in = entries)
    context = {'topic': topic, 'entries': entries, 'images': images}
    return render(request, 'learning_logs/f_topic.html', context)

How the topic is saved as t_type

def new_topic(request):

    if request.method != 'POST':
    #No data submitted; create a blank form.
    form = TopicForm()

        if form.is_valid():
            new_topic = form.save(commit = False)
            new_topic.type = 't_topic'
            new_topic.owner = request.user 
            new_topic.save() 
            form.save()
            return HttpResponseRedirect(reverse('learning_logs:topics'))
    else:
        form = TopicForm(request.POST)

    context = {'form': form}
    return render(request, 'learning_logs/new_topic.html', context)'

topic.html

 {% extends 'learning_logs/base.html' %}

 {% block content %}
    <div class = 'topic-heading'>
     <p>TOPIC : {{topic}}</p>
    </div>

    <div class = 'topic-container'> 
     {%include 'learning_logs/text.html'%}
    </div>

I get the same error of NoReverseMatch at /topics/ Reverse for 'topic' with arguments '(10, '')' not found. 1 pattern(s) tried: ['topics/(?P[0-9]+)/(?P[^/]+)/$']

Here is the topics.html that should display the topics.

{% extends "learning_logs/base.html" %}

{% block content %}

<div class = 'topics-1'>
    <h1> Topics: </h1>

    <ul>
    {% for topic in topics %}
        <li>
         <a href = "{% url 'learning_logs:topic' topic.id topic.type%}">[] {{topic}}</a>
        </li>

        {% empty %}

        <li> No topics have been added yet. </li>

        {% endfor %}
    </ul>
</div>

<a href = "{% url 'learning_logs:new_topic' %}"> Add a new topic :</a>

{% endblock content %}

Answer 1

You could add a type to your Topic model ie:

class Topic(models.Model):
topic_choices= (
                ('t_topic', 't_topic',)
                ('f_topic', 'f_topic',)
)
text = models.CharField(max_length = 200)
date_added = models.DateTimeField(auto_now_add = True)
owner = models.ForeignKey(User, on_delete = models.CASCADE) 
type = models.CharField(max_length=100, choices=topic_choices)

def __str__(self):

    return self.text

and then when you retrieve the topics specify the type:

def f_topic(request, topic_id, type):
    topic = Topic.objects.get(id=topic_id, type='f_topic')

You would have to change your urls, but you can add it to the link:

<a href = "{% url 'learning_logs:topic' topic.id topic.type %}">

Answer 2

To make this possible, add to context the name of the template.

context = {'topic': topic, 'entries': entries, 'images': images, 'template':example.html}

Then in the model topic, add a field :

template = models.CharField(max_length = 200).

In the view where you save newly created topics, get the request value of template :

topic.template = request.POST.get("template")