CODEWITHSUNDEEP
djangodjango-modelsdjango-class-based-views
rogue_particle
rogue_particle

Reputation: 103

How to pass a custom model manager queryset to a template

I am trying to pass a custom query to a template but the query results are not being displayed.

I had a working solution for this but I wanted to implement a custom model manager to simplify the code but I cant get the final step work - that is displaying the results on the template

I have a custom manager:

from django.db import models


class ProfileQuerySet(models.QuerySet):
    def get_users_follows(self, user):
        print(user)
        return self.filter(followed_by__user__username=user)


class ProfileManager(models.Manager):
    def get_queryset(self):
        return ProfileQuerySet(self.model, using=self._db)

    def get_users_follows(self, user):
        return self.get_queryset().get_users_follows(user)

which is instantiated in the model:

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    image = models.ImageField(default='default.jpg', upload_to='profile_pics')
    follows = models.ManyToManyField('self', related_name='followed_by', symmetrical=False)
    objects = ProfileManager()

my view is as follows:

class FollowsListView(LoginRequiredMixin, ListView):
    # Follow.follow_data = [[],[]]
    model = Profile
    template_name = 'blog/follows.html' # <app>/<model>_<viewtype>.html

    # paginate_by = 6

    def get_queryset(self):
        follow_data = Profile.objects.get_users_follows(self.request.user)
        context = {'follow_data', follow_data}
        return context

In the template i am calling the follow_data like so:

{{ follow_data }}
    {% for p in follow_data %}
    {% if p.user %}
    <article class="media content-section">
        <img class="rounded-circle article-img" src="{{ p.user.profile.image.url }}" alt="">
        <a href="{% url 'user-posts' p.user %}">{{ p.user.profile.user }}</a>
    {% else %}
      <p>You are not following any users</p>
    {% endif %}

    </article>
    {% endfor %}

but no results are being displayed so I am not quite sure what I am doing wrong here. Can anyone provide me weith a quick pointer on what ive done wrong?

Upvotes: 1

Views: 933

Answers (1)

rabbit.aaron
rabbit.aaron

Reputation: 2589

There is a typo:

context = {'follow_data', follow_data}

You've created a set, but what you really want is a dict

context = {'follow_data': follow_data}

edit:

but you shouldn't be returning a context here anyway, you should return a queryset. simply do return follow_data should work.

in your template, you can refer to the queryset with {% for user in object_list %}

If you don't want to call it "object_list" you'll need to override get_context_data

def get_context_data(self, **kwargs):
    context = super().get_context_data(**kwargs)
    context["follow_data"] = context.pop("object_list")
    return context

doc: https://docs.djangoproject.com/en/2.2/ref/class-based-views/generic-display/#listview

Upvotes: 2

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