I have a problem of displayed a model text in index.html
This is code of views.py
class IndexView(generic.ListView):
template_name = 'Homepage/index.html'
model = Goods
context_object_name = 'goods'
def description(self):
return self.description_text
def price(self):
return self.price_text
def number(self):
return self.number_text
This is code of html(index.html)
{% for good in goods %}
<h3 class="numbers">{{good.number_text}}</h3>
{% endfor %}
Related
I have a problem while using Django. I was trying to create a learning_log web application from my book and came across this error: NoReverseMatch at /edit_entry/8/
Reverse for 'topic' with arguments '('',)' not found. 1 pattern(s) tried: ['topics/(?P<topic_id>[0-9]+)/\Z']. It said it was because of this line in my edit_entry.html file: p>{{ topic }}</p> but I checked my entire project and couldn't find the reason,
Here is my urls.py:
from django.urls import path
from . import views
app_name = 'learning_logs'
urlpatterns = [
path('', views.index, name='index'),
path('topics/', views.topics, name='topics'),
path('topics/<int:topic_id>/', views.topic, name='topic'),
path('new_topic/', views.new_topic, name='new_topic'),
path('new_entry/<int:topic_id>/', views.new_entry, name='new_entry'),
path('edit_entry/<int:entry_id>/', views.edit_entry, name='edit_entry'),
]
views.py:
from django.shortcuts import render, redirect
from .models import Topic, Entry
from .forms import TopicForm, EntryForm
def index(request):
"""The home page for Learning Log."""
return render(request, 'learning_logs/index.html')
def topics(request):
"""Show all topics."""
topics = Topic.objects.order_by('date_added')
context = {'topics': topics}
return render(request, 'learning_logs/topics.html', context)
def topic(request, topic_id):
"""Show a single topic and all its entries."""
topic = Topic.objects.get(id=topic_id)
entries = topic.entry_set.order_by('-date_added')
context = {'topic': topic, 'entries':entries}
return render(request, 'learning_logs/topic.html', context)
def new_topic(request):
"""Add a new topic."""
if request.method !='POST':
form = TopicForm()
else:
form = TopicForm(data=request.POST)
if form.is_valid():
form.save()
return redirect('learning_logs:topics')
context = {'topic': topic, 'form': form}
return render(request, 'learning_logs/new_entry.html', context)
def edit_entry(request, entry_id):
"""Edit and existing entry."""
entry = Entry.objects.get(id=entry_id)
topic = entry.topic
if request.method !='POST':
form = EntryForm(instance=entry)
else:
form = EntryForm(instance=entry, data=request.POST)
if form.is_valid():
form.save()
return redirect('learning_logs:topic', topic_id=topic.id)
context = {'entry': entry, 'topic': topic, 'form': form}
return render(request, 'learning_logs/edit_entry.html')
models.py:
from django.db import models
class Topic(models.Model):
"""A topic the user is learning about."""
text = models.CharField(max_length=200)
date_added = models.DateTimeField(auto_now_add=True)
def __str__(self):
"""Return a string representation of the model."""
return self.text
class Entry(models.Model):
"""Something specific about a learned topic."""
topic = models.ForeignKey(Topic, on_delete=models.CASCADE)
text = models.TextField()
date_added = models.DateTimeField(auto_now_add=True)
class Meta:
verbose_name_plural = 'entries'
def __str__(self):
"""Return a string representation of the model."""
return f"{self.text[:50]}..."
forms.py:
from django import forms
from .models import Topic, Entry
class TopicForm(forms.ModelForm):
class Meta:
model = Topic
fields = ['text']
labels = {'text': ''}
class EntryForm(forms.ModelForm):
class Meta:
model = Entry
fields = ['text']
labels = {'text': ''}
widgets = {'text': forms.Textarea(attrs={'cols': 80})}
base.html:
<p>
Learning Log
Topics
</p>
{% block content %}{% endblock content %}
topics.html:
{% extends "learning_logs/base.html" %}
{% block content %}
<p>Topics</p>
<ul>
{% for topic in topics %}
<li>
{{ topic }}
</li>
{% empty %}
<li>No topics have been added yet.</li>
{% endfor %}
</ul>
Add a new topic
{% endblock content %}
new_topic.html:
{% extends "learning_logs/base.html" %}
{% block content %}
<p>Add a new topic:</p>
<form action="{% url 'learning_logs:new_topic' %}" method='post'>
{% csrf_token %}
{{ form.as_p }}
<button name="submit">Add topic</button>
</form>
{% endblock content %}
new_entry.html:
{% extends "learning_logs/base.html" %}
{% block content %}
<p>{{ topic }}</p>
<p>Add a new entry:</p>
<form action="{% url 'learning_logs:new_entry' topic.id %}" method='post'>
{% csrf_token %}
{{ form.as_p }}
<button name='submit'>Add entry</button>
</form>
{% endblock content %}
topic.html:
{% extends "learning_logs/base.html" %}
{% block content %}
<p>Topic: {{ topic }}</p>
<p>Entries:</p>
<p>
Add new entry
<ul>
{% for entry in entries %}
<li>
<p>{{ entry.date_added|date:'M d, Y H:i' }}</p>
<p>{{ entry.text|linebreaks }}</p>
<p>
Edit entry
</p>
</li>
{% empty %}
<li>There are no entries for this topic yet.</li>
{% endfor %}
</ul>
{% endblock content %}
edit_entry.html:
{% extends "learning_logs/base.html" %}
{% block content %}
<p>{{ topic }}</p>
<p>Edit entry</p>
<form action="{% url 'learning_logs:edit_entry' entry.id %}" method='post'>
{% csrf_token %}
{{ form.as_p }}
<button name="submit">Save changes</button>
</form>
{% endblock content %}
index.html:
{% extends "learning_logs/base.html" %}
{% block content %}
<p>Learning Log helps you keep track of what you've learned.</p>
{% endblock content %}
and that is literally everything I checked and I can't seem to find the error, please help me find the error and fix it.
In views.py, on the edit_entry function, pass context to the render method.
On the very last line of the edit_entry function, in the views.py file, add the context to the arguments you are passing to the returned render method.
def edit_entry(request, entry_id):
"""Edit and existing entry."""
entry = Entry.objects.get(id=entry_id)
topic = entry.topic
if request.method !='POST':
form = EntryForm(instance=entry)
else:
form = EntryForm(instance=entry, data=request.POST)
if form.is_valid():
form.save()
return redirect('learning_logs:topic', topic_id=topic.id)
context = {'entry': entry, 'topic': topic, 'form': form}
return render(request, 'learning_logs/edit_entry.html')
Correct the last line as follows, by adding context. This is so can you can use the entry, topic, and form that you defined in the context in the html template.
return render(request, 'learning_logs/edit_entry.html', context)
My model data for my website wont appear on new page when using slug and I am unsure as to why this is happening as I managed to get it to work with the previous page of the website but when I try to call it on my html page nothing will load now and I use the slug in the view to access the page.
Models.py
class Parasite(models.Model):
name = models.CharField(max_length=128, unique=True)
slug = models.SlugField(max_length=100, unique=True)
description = models.TextField(max_length=100000)
image = models.ImageField(upload_to='parasite_images', default='default/default.jpg', blank=True)
def save(self, *args, **kwargs):
self.slug = slugify(self.name)
super(Parasite, self).save(*args, **kwargs)
def __str__(self):
return self.name
views.py
def view_parasite(request,parasite_name_slug):
context_dict = {}
try:
parasite = Parasite.objects.get(slug=parasite_name_slug)
context_dict['parasites'] = parasite
except Parasite.DoesNotExist:
context_dict['parasites'] = None
return render(request, 'parasites_app/viewpara.html', context = context_dict)
viewpara.html
{% extends 'parasites_app/base.html' %}
{% load static %}
{% block content_block %}
{% for p in parasite %}
<h3>{{p.name}}</h3>
{% endfor %}
{% endblock %}
urls.py
urlpatterns = [
path('login/', views.user_login, name='login'),
path('logout/', views.user_logout, name='logout'),
path('admin/', admin.site.urls),
path('', views.public, name='public'),
path('public/', views.public, name='public'),
path('private/', views.logged_in_content, name='private'),
path('public/<slug:parasite_name_slug>/',views.view_parasite, name='view_parasite'),
path('<slug:post_name_slug>/', views.show_post, name='show_post'),
]
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
First mistake - you are getting one Parasite object (cause you use method get) and you call it with plural name 'parasites':
parasite = Parasite.objects.get(slug=parasite_name_slug)
context_dict['parasites'] = parasite
Second mistake - when you want to show it in template, you call for single parasite, but you decided to name the key parasites.
{% for p in parasite %}
Third mistake - don't use for loop for one object, just call it.
Answer:
views.py
parasite = Parasite.objects.get(slug=parasite_name_slug)
context_dict['parasite'] = parasite
viewpara.html
{% block content_block %}
{{ parasite.name }}
{% endblock %}
I am using MVT in django. I am using generic CBV (listview, detailview). here are my codes
Here is model.py
from django.db import models
class Singers(models.Model):
name= models.CharField(max_length=256)
age= models.IntegerField()
gender= models.CharField(max_length=10)
class Albums(models.Model):
name= models.CharField(max_length=256)
singer=models.ForeignKey(Singers, on_delete=models.CASCADE)
view.py
from django.views import generic
from core.models import Albums, Singers
#in generic view instead of functions, we use classes
class AlbumView(generic.ListView):
model = Albums
template_name = 'index.html'
paginate_by = 10
def get_queryset(self):
return Albums.objects.all()
class DetailView(generic.DetailView):
model = Albums
template_name = 'detailview.html'
Here are urls.py
from django.urls import path
from core.views import AlbumView, DetailView
urlpatterns = [
path('album/', AlbumView.as_view()),
path('album/detail/<pk>/', DetailView.as_view())
]
Here is index.html
{% block content %}
<h2>Albums</h2>
<ul>
{% for albums in object_list %}
<li>{{ albums.name }}</li>
{% endfor %}
</ul>
{% endblock %}
here is detailview.html
{% block content %}
<h1>name: {{Albums.name}}</h1>
<p><strong>Singer: {{Albums.Singer}}</strong></p>
{% endblock %}
The detail view is not working fine. It is not fetching the respective name of the album and singer details.
Suggest me what should i do?
Try this
{% block content %}
<h1>name: {{object.name}}</h1>
<p><strong>Singer: {{object.singer.name}}</strong></p>
{% endblock %}
class DetailView(generic.DetailView):
model = Albums
template_name = 'detailview.html'
This is not working you have to get first context like this
def get_context_data(self, **kwargs):
// Call the base implementation first to get a context
context = super().get_context_data(**kwargs)
// Add in a QuerySet of all the books
context['Album_list'] = Albums.objects.all()
return context
And you can do as well
context_object_name = 'publisher'
queryset = Publisher.objects.all()
views.py.
#login_required
def friends_profile(request):
f_profiles = Profile.objects.get(user=request.user)
return render(request, 'mains/friends_profile.html', {'f_profiles':f_profiles} )
urls.py
path('friends_profile/', views.friends_profile, name='friends_profile'),
template = friends_profile.html
{% extends "mains/base.html" %}
{% block content %}
{% for friends in f_profiles %}
{{ friends.full_name }}
{% empty %}
<li>NO DATA</li>
{% endfor %}
{% endblock content %}
models.py
class Profile(models.Model):
user = models.OneToOneField(User,
on_delete=models.CASCADE,default='',unique=True)
full_name = models.CharField(max_length=100,default='')
friends = models.ManyToManyField(User, related_name='friends',blank=True)
email = models.EmailField(max_length=60,default='')
date_added = models.DateTimeField(auto_now_add=True)
def get_friends(self):
return self.friends.all()
def get_friends_no(self):
return self.friends.all().count()
def __str__(self):
return f'{self.user.username}'
STATUS_CHOICES = (
('send', 'send'),
('accepted','accepted'),
)
class Relationship(models.Model):
sender = models.ForeignKey(Profile, on_delete=models.CASCADE,
related_name='sender')
receiver = models.ForeignKey(Profile, on_delete=models.CASCADE,
related_name='receiver')
status = models.CharField(max_length=8, choices=STATUS_CHOICES)
def __str__(self):
return f"{self.sender}-{self.receiver}-{self.status}"
'Profile' object is not iterable. This is raising when i open this template( friends_profiles.html ). Please... Help me in this ERROR. What am i missing in this ?
I will really appreciate your HELP.
You are only passing a single object f_profiles in the context to the template, but are trying to iterate over an iterable by doing {% for friends in f_profiles %}.
f_profiles = Profile.objects.get(user=request.user) this will only give you one object which is the profile of the request.user. You are not getting friends of the user with this line of code.
Also, it maybe better to use
f_profiles = get_object_or_404(Profile, user=request.user)
Try to replace this code in the templates:
{% for friends in f_profiles %}
{{ friends.full_name }}
with
{% for friend in f_profiles.friends.all %}
{{ friend.full_name}}
or
{% for friend in f_profiles.get_friends %}
{{ friend.full_name }}
I'm sure this is a very basic question but I have a OneToMany Relationship and I wish to list all the associated children on a page. Here's what i have so far.
Model File
from django.utils import timezone
from django.contrib.auth.models import User
from django.urls import reverse
class Post(models.Model):
title = models.CharField(max_length=100)
date_posted = models.DateTimeField(default=timezone.now)
author = models.ForeignKey(User, on_delete=models.CASCADE)
def __str__(self):
return self.title
def get_absolute_url(self):
return reverse ('blog-post' , kwargs = {'pk': self.pk})
class Paragraph(models.Model):
content = models.TextField(default='')
post = models.ForeignKey(Post,default='', on_delete=models.CASCADE)
def __str__(self):
return self.content
class Subtitle(models.Model):
subtitle = models.CharField(max_length=100,default='')
post = models.ForeignKey(Post,default='', on_delete=models.CASCADE)
def __str__(self):
return self.subtitle
View
model = Post
template_name = 'blog/post.html'
context_object_name = 'post'
HTML FILE
{%block content%}
{% if post.author == user %}
Edit
Delete
{% endif %}
<div class = 'content'>
<h2>{{post.title}}</h2>
<!-- I want to show Subtitle here--><p></p>
<!-- I want to show Paragraph here--><p></p>
<h3>By: {{post.author}} on {{post.date_posted}}</h3>
</div>
{% endblock content %}
Isn't it's just {% for subtitle in post.subtitle_set.all %} {{ subtitle }} {% endfor %} and same for paragraph? – Charnel Feb 23 at 21:42