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How to combine multiple models into one view template in django

I have two models
class Post(models.Model):
title = models.CharField(max_length=100)
body = RichTextField(max_length=1000000)
created_at = models.DateTimeField(default=datetime.now, blank = True)
image = ResizedImageField(size=[250, 200], upload_to='img')
and
class Politics(models.Model):
title = models.CharField(max_length=100)
body = RichTextField(max_length=1000000)
created_at = models.DateTimeField(default=datetime.now, blank = True)
image = ResizedImageField(size=[250, 200], upload_to='img',blank = True)
I want to combine them both into one template view and render them on the index.html
Here is my view function
def index(request):
politics = Politics.objects.all()
return render(request,
'index.html',
{'politics':politics, 'posts': Post.objects.all()})
index.html (posts part)
<section id="posts" class="posts">
<div class="container" data-aos="fade-up">
<div class="row g-5">
{% for post in posts reversed %}
{% if forloop.counter < 5 %}
<div class="post-entry-1 col-lg-2 box mx-1">
<img src="{{post.image.url}}" class="post_img">
<div>
<div class="post-meta"><span class="date">{{post.category}}</span> <span class="mx-1">&bullet;</span> <span>{{post.created_at}}</span></div>
<h2>{{post.title}}</h2>
</div>
<p class="mb-4 d-block">{{post.body|truncatewords:75}}</p>
<div class="d-flex align-items-center author">
<div class="photo"><img src="{% static 'assets/img/person-1.jpg' %}" alt="" class="img-fluid"></div>
<div class="name">
<h3 class="m-0 p-0">OlePundit</h3>
</div>
</div>
</div>
(politics part)
<div class="row">
{% for politic in politics%}
{% if forloop.counter < 11 %}
<div class="post-entry-1 col-2 mx-1">
<img src="{{politic.image.url}}" alt="" class="post_img">
<div class="post-meta">
<span class="date">{{politic.category}}</span>
<span class="mx-1">&bullet;</span>
<span>{{politic.created_at}}</span>
</div>
<h2 class="mb-2">{{politic.title}}</h2>
<span class="author mb-3 d-block">Ole Pundit</span>
<p class="mb-4 d-block">{{politic.body| safe | truncatewords:20}}</p>
</div>
{% endif %}
{% endfor %}
</div>
However, only the 'politics' object is being rendered. What could be wrong?

try this or the problem will be in template file
def index(request):
politics = Politics.objects.all()
posts = Post.objects.all()
return render(request,
'index.html',
{'politics':politics, 'posts': posts})

Having issues retriving data from my database to the users

I am trying display all courses from my course model to the users, but seems i am getting it wrong.
here is my code;
views.py
def course_list(request, category_slug=None):
category = None
categories = Category.objects.all()
courses = Courses.objects.filter(available=True)
if category_slug:
category = get_object_or_404(Category, slug=category_slug)
courses = courses.filter(category=category)
return render(request,'courses/content/list.html', {'category': category, 'categories': categories, 'courses': courses})
def course_detail(request, id, slug):
course = get_object_or_404(Courses, id=id, slug=slug, available=True)
return render(request, 'courses/content/detail.html', {'course': course})
here is the code for my list.html
{%block content %}
<section id="about-home">
<h2>Courses</h2>
</section>
<!-- courses section starts -->
<section id="course">
<h1>Our Amazing Courses</h1>
<p>Replenish man have thing gathering lights yielding shall you</p>
<div class="course-box">
{% for course in courses %}
<div onclick="window.location.href='{{ course.get_absoule.url}}';" class="courses">
<img
src="{% if courses.cover %}{{ courses.cover.url }} {% else %} {% static 'images/c3.jpg' %}{% endif %}"
alt="{{ courses.name }}" />
<div class="details">
<span>{{courses.updated}}</span>
<h6>{{courses.name}}</h6>
<div class="star">
<i class="fas fa-star"></i>
<i class="fas fa-star"></i>
<i class="fas fa-star"></i>
<i class="fas fa-star"></i>
<i class="far fa-star"></i>
<span>(23)</span>
</div>
</div>
<div class="cost">${{courses.price_display}}</div>
</div>
{% endfor %}
</section>
{%endblock content%}
the above codes is for my views.py and list.html

Django Adding Pagination To Search Form Page

How do I add pagination to this form's search functionality?
By default, on page refresh, the HTML template for loop shows all the results for all the courses. When the user types in criteria into the form, the form filters the course results template for loop based on what the user typed. Is there a way on page refresh to show only a set limit of course results on the page instead of all of them? Then when a user searches/filters, that pagination limit of X number of course results on a page will still need to show but still applied to the search criteria/filter.
HTML:
<form id='courseform' action="." method="get">
<div class="form-row">
<div class="form-group col-12"> {{ form.title__icontains }} </div>
<div class="form-group col-md-2 col-lg-2"> {{ form.visited_times__gte.label_tag }} {{ form.visited_times__gte }} </div>
<div class="form-group col-md-2 col-lg-2"> {{ form.visited_times__lte.label_tag }} {{ form.visited_times__lte }} </div>
<div class="form-group col-md-2 col-lg-2"> {{ form.created_at__gte.label_tag }} {{ form.created_at__gte }} </div>
<div class="form-group col-md-2 col-lg-2"> {{ form.created_at__lte.label_tag }} {{ form.created_at__lte }} </div>
<div class="form-group col-md-2"> {{ form.skill_level.label_tag }} {{ form.skill_level }} </div>
<div class="form-group col-md-2"> {{ form.subjects.label_tag }} {{ form.subjects }} </div>
</div>
<script src='https://www.google.com/recaptcha/api.js?render=6LeHe74UAAAAAKRm-ERR_fi2-5Vik-uaynfXzg8N'></script>
<div class="g-recaptcha" data-sitekey="6LeHe74UAAAAAKRm-ERR_fi2-5Vik-uaynfXzg8N"></div>
<button type="submit" class="btn btn-primary form-control">Search</button>
<p>This site is protected by reCAPTCHA and the Google
<a target="_blank" rel="noopener noreferrer" href="https://policies.google.com/privacy">Privacy Policy</a> and
<a target="_blank" rel="noopener noreferrer" href="https://policies.google.com/terms">Terms of Service</a> apply.
</p>
</form>
<!--Used to have {{ object.subjects }} next to -->
{% for object in object_list %}
<a class="course_list_link" href="{{ object.get_absolute_url }}"> <p class = "course_list_border"> <strong> {{ object }} </strong> <br/> <br/> {{ object.description }} <br/><br/> {{ object.skill_level }}   {{ object.created_at }}   Views: {{ object.visited_times }}  
{% for sub in object.subjects.all %}
{{ sub.name }}
{% endfor %} </p> </a>
{% endfor %}
Views.py:
class CourseListView(ListView):
template_name = 'courses/course_list.html'
​
def get_queryset(self):
return Course.objects.all()
​
def get(self, request, *args, **kwargs):
form = CourseForm(request.GET)
queryset = self.get_queryset()
if form.is_valid():
queryset = queryset.filter(**{k: v for k, v in form.cleaned_data.items() if v})
self.object_list = queryset
return self.render_to_response(self.get_context_data(form=form,object_list=queryset,))
Forms.py:
class CourseForm(forms.Form):
title__icontains = forms.CharField(widget=forms.TextInput(attrs={'class':'form-control col-12', 'autocomplete':'off', 'id':'title_contains', 'type':'search', 'placeholder': 'Course Name'}), required=False)
visited_times__gte = forms.IntegerField(widget=forms.NumberInput(attrs={'class':'form-control', 'autocomplete':'off','id':'view_count_max', 'type':'number', 'min':'0', 'placeholder': '0'}), required=False, validators=[MinValueValidator(0), MaxValueValidator(99999999999999999999999999999999999)])
visited_times__lte = forms.IntegerField(widget=forms.NumberInput(attrs={'class':'form-control', 'autocomplete':'off', 'id':'view_count_min', 'type':'number', 'min':'0', 'placeholder': '1000000'}), required=False, validators=[MinValueValidator(0), MaxValueValidator(99999999999999999999999999999999999)])
created_at__gte = forms.DateField(widget=forms.TextInput(attrs={'class':'form-control', 'autocomplete':'off', 'id':'date_max','type':'date', 'placeholder': 'mm/dd/yyy'}), required=False)
created_at__lte = forms.DateField(widget=forms.TextInput(attrs={'class':'form-control', 'autocomplete':'off', 'id':'date_min', 'type':'date', 'placeholder': 'mm/dd/yyy'}), required=False)
skill_level = forms.ChoiceField(widget=forms.Select(attrs={'class':'form-control', 'autocomplete':'off','id':'skill_level'}), choices = ([('',''), ('Beginner','Beginner'), ('Intermediate','Intermediate'),('Advanced','Advanced'), ]), required=False)
subjects = forms.ModelChoiceField(queryset=Subject.objects.all().order_by('name'), empty_label="", widget=forms.Select(attrs={'class':'form-control', 'autocomplete':'off', 'id':'subjects'}), required=False)
# the new bit we're adding
def __init__(self, *args, **kwargs):
super(CourseForm, self).__init__(*args, **kwargs)
self.fields['title__icontains'].label = "Course Name:"
self.fields['visited_times__gte'].label = "Min Views:"
self.fields['visited_times__lte'].label = "Max Views:"
self.fields['created_at__gte'].label = "Min Date:"
self.fields['created_at__lte'].label = "Max Date:"
self.fields['skill_level'].label = "Skill Level:"
self.fields['subjects'].label = "Subject:"
self.fields['subjects'].queryset = Subject.objects.filter()
Models.py:
class Subject(models.Model):
SUBJECT_CHOICES = ()
name = models.CharField(max_length=20,choices=SUBJECT_CHOICES)
def __str__(self):
return self.name
​
class Meta:
ordering = ('name',)
​
class Course(models.Model):
​
SKILL_LEVEL_CHOICES = (
('Beginner', 'Beginner'),
('Intermediate', 'Intermediate'),
('Advanced', 'Advanced'),
)
​
slug = models.SlugField()
title = models.CharField(max_length=120)
description = models.TextField()
allowed_memberships = models.ManyToManyField(Membership)
created_at = models.DateTimeField(auto_now_add=True)
subjects = models.ManyToManyField(Subject)
skill_level = models.CharField(max_length=20,choices=SKILL_LEVEL_CHOICES, null=True)
visited_times = models.PositiveIntegerField(default=0)
def __str__(self):
return self.title
def get_absolute_url(self):
return reverse('courses:detail', kwargs={'slug': self.slug})
#property
def lessons(self):
return self.lesson_set.all().order_by('position')
​
class Meta:
ordering = ('title',)
I tried following some tutorials Django docs one but not sure how to embed that pagination code to mine.
https://docs.djangoproject.com/en/3.0/topics/pagination/
I would appreciate if anyone could help me with this.

Please edit to include your code.
In the page you linked to, read this section:
https://docs.djangoproject.com/en/3.0/topics/pagination/#paginating-a-listview
You just need to add this to your ListView
paginate_by = N
then add
<div class="pagination">
<span class="step-links">
{% if contacts.has_previous %}
« first
previous
{% endif %}
<span class="current">
Page {{ contacts.number }} of {{ contacts.paginator.num_pages }}.
</span>
{% if contacts.has_next %}
next
last »
{% endif %}
</span>
</div>
to course_list.html.

Serach form (html) :
<!-- Search Form -->
<form class="navbar-search navbar-search-dark form-inline mr-3 d-none d-md-flex ml-lg-auto" action="{% url 'search' %}" method="get">
<div class="form-group mb-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search Tasks" aria-label="Search" name="q">
<button class="btn btn-outline-white my-2 my-sm-0" type="submit">Search</button>
</div>
</form>
views.py
class SearchView(ListView): # taskları arama sonucu listeliyoruz
model = Task
template_name = 'task/search.html'
paginate_by = 5
context_object_name = 'task'
def get_queryset(self):
query = self.request.GET.get("q")
if query:
return Task.objects.filter(
Q(title__icontains=query) | Q(content__icontains=query) | Q(tag__title__icontains=query)).order_by(
'id').distinct()
return Task.objects.all().order_by('id')
In whichever field you want to use pagination, write the code there (example category_detail.html) :
<div class="card-footer py-4">
{% if is_paginated %}
<nav aria-label="...">
<ul class="pagination justify-content-end mb-0">
{% if page_obj.has_previous %}
<li class="page-item">
<a class="page-link" href="?page={{ page_obj.previous_page_number }}" tabindex="-1">
<i class="fas fa-angle-left"></i>
<span class="sr-only">Previous</span>
</a>
</li>
{% else %}
<li class="page-item disabled">
<a class="page-link" href="#" tabindex="-1">
<i class="fas fa-angle-left"></i>
<span class="sr-only">Previous</span>
</a>
</li>
{% endif %}
{% for i in paginator.page_range %}
{% if page_obj.number == i %}
<li class="page-item active">
<a class="page-link" href="#"> {{ i }} </a>
</li>
{% else %}
<li class="page-item">
<a class="page-link" href="?page={{ i }}">{{ i }}<span class="sr-only">(current)</span></a>
</li>
{% endif %}
{% endfor %}
{% if page_obj.has_next %}
<li class="page-item">
<a class="page-link" href="?page={{ page_obj.next_page_number }}">
<i class="fas fa-angle-right"></i>
<span class="sr-only">Next</span>
</a>
</li>
{% else %}
<li class="page-item disabled">
<a class="page-link" href="#">
<i class="fas fa-angle-right"></i>
<span class="sr-only">Next</span>
</a>
</li>
{% endif %}
</ul>
</nav>
{% endif %}
</div>
I hope the examples worked for you.

Flask Form Handling in Jinja2 For Loop

I have a blog-type application where the homepage displays posts with some information and with an Add Comment form. The form is intended to write to my Comments() model in models.py for that specific post.
The Problem: is that because I am looping through the posts in home.html, the post.id is not available to the home function in routes.py. So, when the form is validated, the comment is applied to all the posts, not just the one in which the comment is added.
The question: how can I get the relevant post.id in the home function from the Jinja forloop and have the comment be applied to the specific post, not just all the posts on the homepage?? I'm not seeing my logic/syntax error - what am I missing here? Thanks
The resulting error: AttributeError: 'function' object has no attribute 'id'
which of course makes sense because the application has no clue what post we are referencing in the Jinja2 forloop in home.html.
here is the Comments db model in models.py:
class Comments(db.Model):
comment_id = db.Column(db.Integer, primary_key=True)
user_id = db.Column(db.Integer, nullable=True, primary_key=False)
post_id = db.Column(db.Integer, nullable=True, primary_key=False)
comment = db.Column(db.String(2000), unique=False, nullable=True)
comment_date = db.Column(db.DateTime, nullable=False, default=datetime.utcnow)
class Meta:
database = db
def fetch_post_comments(self, post_id):
comments = Comments.query.filter(Comments.post_id==post_id)
return comments
def fetch_user(self, user_id):
user = User.query.filter(User.id==user_id).first_or_404()
return user.username
def __repr__(self):
return f"Comments ('{self.user_id}', '{self.post_id}', '{self.comment}', '{self.comment_date}')"
And here is my home function in routes.py:
#app.route("/")
#app.route("/home", methods=['GET', 'POST'])
#login_required
def home():
page = request.args.get('page', 1, type=int)
posts = Post.query.order_by(Post.date_posted.desc()).paginate(page=page, per_page=5)
comment_form = CommentForm()
def add_comment(post_id):
if comment_form.validate_on_submit():
new_comment = Comments(user_id=current_user.id,
post_id=post_id,
comment=comment_form.comment_string.data)
db.session.add(new_comment)
db.session.commit()
flash('HOT TAKE! Posted your comment.', 'success')
# return redirect(url_for('post', post_id=post.id))
def get_upvote_count(post_id):
count = Vote.query.filter(Vote.post_id==post_id).count()
return count
def get_flag_count(post_id):
count = Flag.query.filter(Flag.post_id == post_id).count()
return count
def get_comment_count(post_id):
count = Comments.query.filter(Comments.post_id == post_id).count()
return count
def get_favorite_count(post_id):
count = Favorites.query.filter(Favorites.post_id == post_id).count()
return count
def get_youtube_id_from_url(url):
video_id = url.split('v=')[1]
if '&' in video_id:
video_id = video_id.split('&')[0]
base_url = "https://www.youtube.com/embed/"
return base_url + video_id
def get_spotify_embed_url(url):
track_or_playlist = url.split('https://open.spotify.com/')[1].split('/')[0]
base_url = f"https://open.spotify.com/embed/{track_or_playlist}/"
spotify_id = url.split('https://open.spotify.com/')[1].split('/')[1]
embed_url = base_url + spotify_id
return embed_url
return base_url + video_id
return render_template('home.html',
posts=posts,
get_upvote_count=get_upvote_count,
get_comment_count=get_comment_count,
get_flag_count=get_flag_count,
get_favorite_count=get_favorite_count,
comment_form=comment_form,
add_comment=add_comment,
get_youtube_id_from_url=get_youtube_id_from_url,
get_spotify_embed_url=get_spotify_embed_url)
And here is my home.html
{% extends "layout.html" %}
{% block content %}
{% for post in posts.items %}
<article class="media content-section">
<img class="rounded-circle article-img" src="{{ url_for('static', filename='profile_pics/' + post.author.image_file) }}">
<div class="media-body">
<div class="article-metadata">
<div align="left">
<a class="mr-2 text-secondary" href="{{ url_for('user_posts', username=post.author.username) }}">{{ post.author.username }}</a>
</div>
<div align="left">
<small class="text-muted">Posted on: {{ post.date_posted.strftime('%Y-%m-%d') }}</small>
</div>
<div align="right">
<a class="mr-2 text-secondary" href="{{ url_for('flag', post_id=post.id, user_id=current_user.id) }}">Flag Post</a>
</div>
<div align="right">
<a class="mr-2 text-secondary" href="{{ url_for('add_favorite', post_id=post.id, user_id=current_user.id) }}">Favorite Post ({{ get_favorite_count(post.id) }})</a>
</div>
<div align="right">
<a class="mr-2 text-secondary" href="{{ url_for('post', post_id=post.id) }}">Comments ({{ get_comment_count(post.id) }})</a>
</div>
</div>
<h3><a class="article-title" href="{{ url_for('post', post_id=post.id) }}">{{ post.title }}</a></h3>
<p class="article-content justify-content-center">{{ post.content }}</p>
<br>
{% for url in post.urls.split('||') %}
{% if 'youtube.com' in url %}
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item"
src="{{ get_youtube_id_from_url(url) }}" allowfullscreen="" frameborder="0">
</iframe>
</div>
Link
{% elif 'soundcloud.com' in url %}
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item" scrolling="no" frameborder="no"
src="{{ 'https://w.soundcloud.com/player/?url=' + url }}">
</iframe>
</div>
Link
{% elif 'spotify.com' in url %}
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item"
src="{{ get_spotify_embed_url(url) }}" allowfullscreen allow="encrypted-media">
</iframe>
</div>
Link
{% elif 'vimeo.com' in url %}
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item" scrolling="no" frameborder="no"
src="{{ 'https://player.vimeo.com/video/' + url.split('https://vimeo.com/')[1] }}">
</iframe>
</div>
Link
{% elif 'tumblr.com' in url %}
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item"
src="{{ url }}" frameborder="0">
</iframe>
</div>
Link
{% else %}
Link
<br>
{% endif %}
{% endfor %}
<br>
<br>
<p class="text-muted"><strong>Tags:</strong></p>
{% for tag in post.tags.replace(' ', ' ').strip(',').split(' ') %}
<a class="btn btn-light" href="{{url_for('tag_posts', tag=tag)}}">{{tag.strip('#').strip(' ').lower() }}</a>
{% endfor %}
<br>
<form method="POST" action="" enctype="multipart/form-data">
{{ comment_form.hidden_tag() }}
<fieldset class="form-group">
<br>
<br>
<p class="text-muted"><strong>Add a comment:</strong></p>
<div class="form-group">
{% if comment_form.comment_string.errors %}
{{ comment_form.comment_string(class="form-control form-control-lg is-invalid") }}
<div class="invalid-feedback">
{% for error in comment_form.comment_string.errors %}
<span>{{ error }}</span>
{% endfor %}
</div>
{% else %}
{{ comment_form.comment_string(class="form-control form-control-lg") }}
<!-- {{ add_comment(post_id=post.id) }}-->
{% endif %}
</div>
</fieldset>
<div class="form-group">
{{ comment_form.submit(class="btn btn-secondary") }}
</div>
</form>
<br>
<p class="text-muted mt-4"><strong>Street Cred: </strong>{{ get_upvote_count(post.id) }}</p>
<a class="btn btn-secondary mb-4" href="{{url_for('upvote', user_id=post.author.id, post_id=post.id)}}">Upvote</a>
</div>
</article>
{% endfor %}
{% for page_num in posts.iter_pages(left_edge=1, right_edge=1, left_current=1, right_current=2) %}
{% if page_num %}
{% if posts.page == page_num %}
<a class="btn btn-secondary mb-4" href="{{ url_for('home', page=page_num) }}">{{ page_num }}</a>
{% else %}
<a class="btn btn-outline-info mb-4" href="{{ url_for('home', page=page_num) }}">{{ page_num }}</a>
{% endif %}
{% else %}
...
{% endif %}
{% endfor %}
{% endblock content %}

A couple of options:
Add the post.id to the url as a parameter or arg, here's the arg method:
Add the url to the form and set the post.id as the arg:
<form method="POST" action="{{url_for('home', post_id=post.id)}}" enctype="multipart/form-data">
And in the route:
new_comment = Comments(user_id=current_user.id,
post_id=request.args.get('post_id', type=int),
comment=comment_form.comment_string.data)
OR
Add a hidden field to your form, and set the value of that to be the post.id:
Add a hidden field onto your form:
post_id = HiddenField()
You'll need to replace the CSRF render (hidden_tag()) to prevent auto rendering of the post_id field:
{{ comment_form.csrf_token }}
Next, set the value of your hidden field data (credit to this answer for this function):
{% set p = comment_form.post_id.process_data(post.id) %}
{{ comment_form.post_id() }}
and finally, in the route, (remove the add_comment declaration):
def home():
# Omitted ...
if comment_form.validate_on_submit():
new_comment = Comments(user_id=current_user.id,
post_id=comment_form.post_id.data,
comment=comment_form.comment_string.data)
db.session.add(new_comment)
# etc...
Hope this helps, note it's not tested

paginator is not working in django

I've followed the official docs to use paginator in Django and it not working, it shows the right page count but on every page, the whole list displayed instead of slicing it into many pages
views.py
def home(request):
current_user = request.user
all_dress = Item.objects.all().filter(dress_active=True).order_by('-created_at')
all_good = Item.objects.all().filter(dress_special=True)
all_name = Name.objects.all()
all_ads = Ads.objects.all()
#pig
paginator = Paginator(all_dress, 3) # Show 12 dress per page
page = request.GET.get('page')
dresss = paginator.get_page(page)
context = {
'all_dress': all_dress,
'all_name': all_name,
'current_user': current_user,
'all_good':all_good,
'all_ads':all_ads,
'dresss':dresss,
}
return render(request, 'fostan/index.html',context)
HTML
<div class="row">
<div class="col">
</div>
<div class="col">
<div dir="ltr">
<div class="pagination" align="left">
<span class="step-links" align="left">
{% if dresss.has_previous %}
« first
previous
{% endif %}
<span class="current">
Page number {{ dresss.number }} of {{ dresss.paginator.num_pages }}
</span>
<br>
{% if dresss.has_next %}
next
last »
{% endif %}
</span>
</div>
</div>
</div>
<div class="col">
</div>
</div>
I have 9 items, and I asked the paginator to show only 3 items per page, the result is 3 pages with the same 9 items on every page!
item list
<ul class="thumbnails" >
{% for dress in all_dress %}
<li class="span4 pull-left" >
<div class="thumbnail">
<a class="zoomTool" href="{% url 'dress_details' dress.pk%}" title="add to cart"><span class="icon-search"></span> عرض التفاصيل</a>
<img class="main" src="{{ dress.dress_image1.url }}" alt="">
<div class="caption">
<h5> فستان {{ dress.dress_name }} </h5>
<h4>
<a class="defaultBtn" href="{% url 'dress_details' dress.pk%}" title="إضفط لمشاهدة الفستان"><span class="icon-zoom-in"></span></a>
<span class="pull-left">{{ dress.dress_price }} جنيه </span>
</h4>
</div>
</div>
</li>
{% endfor %}
</ul>

You should do this way:
paginator = Paginator(all_dress, 3)
page = request.GET.get('page')
try:
dresss = paginator.page(page)
except PageNotAnInteger:
dresss = paginator.page(1)
except EmptyPage:
dresss = paginator.page(paginator.num_pages)