django view - all categories and all entries

Question

I'm trying to build a page with all of the model's categories and associated entries in one view. I followed tips from here django class based views for all categories with all entires and here Get all categories and items in category but I still can't get it to work. Any ideas ?

-- models

class Category(models.Model):
    name = models.CharField(max_length=50)

    def __unicode__(self):
        return self.name

class Feed(models.Model):
    name = models.CharField(max_length=100)
    url = models.CharField(max_length=100)
    category = models.ForeignKey(Category)
    user = models.ManyToManyField(User)

    def __unicode__(self):
        return self.url

-- views

def category_page(request):
    object_list = Category.objects.all()
    context = {'object_list': object_list,}
    return render(request, 'category_page.html', context)

-- template category_page.html

{% block content %}
{% for category in object_list %}
    {{ category.name }}
    {% for entry in category.entry_set.all %}
        {{ category.name}}
    {% endfor %}
{% endfor %}
{% endblock content %}

I'm getting list of all categories displayed but no entries.

thanks -M

Answer 1

Here

{% for entry in category.entry_set.all %}
    {{ category.name}}
{% endfor %}

should be

{% for entry in category.feed_set.all %}
    {{ entry.name}}
{% endfor %}

{{ category.name}} inside the forloop for entries is what is not displaying the correct name.

Also, what is entry_set ? If you are not specifying a related_name, you need to use the lower-case model name to get the related objects (feed_set in this case).

Something like this:

category.feed_set.all

Summing it up,

{% block content %}
{% for category in object_list %}
    {{ category.name }}
    {% for entry in category.feed_set.all %}
        {{ entry.name}}
    {% endfor %}
{% endfor %}
{% endblock content %}

You can read more on related objects here

Answer 2

If this is your actual code, the problem is variable names in your template.

{% for category in object_list %}
    {{ category.name }}
    {% for entry in category.feed_set.all %}
        {{ entry.name}}
    {% endfor %}
{% endfor %}

Specifically, you refer to entry_set, but that's not the reverse name for the relationship since your model name is Feed rather than Entry and you haven't declared a non-default related_name argument.

Also, you're re-printing your category name instead of the name of the Feed instances.