Check if text exists in Django template context variable - django

This may not be the best way of doing this (open to suggestions). But I want to display a button on my home page depending on the value of a Boolean in the custom user model.
I am passing the value of this boolean via context in the view. But I can't seem to get the template logic to work.
Models.py
from django.contrib.auth.models import AbstractUser
class CustomUser(AbstractUser):
isAdmin = models.BooleanField(default = False,)
#more models...
views.py
from django.views.generic import TemplateView
from django.contrib.auth import get_user_model
from accounts.models import CustomUser
class HomePageView(TemplateView):
template_name = 'home.html'
def get_context_data(self, **kwargs):
context = super(HomePageView, self).get_context_data(**kwargs)
if self.request.user.is_authenticated:
adminStatus = CustomUser.objects.get(id=self.request.user.id)
print(adminStatus.isAdmin)
context['adminStatus'] = str(adminStatus.isAdmin)
return context
home page template.html
{% extends 'base.html' %}
{% block body %}
{% if user.is_authenticated %}
<h4>Hi {{ user.username }}!</h4>
<a class="btn btn-primary btn-lg" href="{% url 'dashboard' %}" role="button"> Go to Dashboard</a>
{% else %}
<p>You are not logged in</p>
login
</div>
{% if adminStatus == "True" %}
<h1>test</h1>
<div class = "adminPanel">
<a class="btn btn-primary btn-lg" href="{% url 'newEquipment' %}" role="button"> add new equipment</a>
</div>
{% endif %}
{% endif %}
{% endblock %}
I can't see the "newEquipment" button even though the adminStatus context is equal to "True", as verified by the print() command.
I have a feeling my template logic is not correct. I also tried:
{% if adminStatus contains "True" %}

In the view, context['adminStatus'] is defined only when the user is logged in. Meanwhile in the template, you are checking for adminStatus when the user is not logged in.
First the return context statement needs to be un-indented once, so that context (with or without adminStatus) is available regardless:
def get_context_data(self, **kwargs):
context = super(HomePageView, self).get_context_data(**kwargs)
if self.request.user.is_authenticated:
adminStatus = CustomUser.objects.get(id=self.request.user.id)
context['adminStatus'] = adminStatus.isAdmin
return context
Next, yes you probably need to fix your template logic. Assuming you want to check for adminStatus only if the user is logged in, it should look like:
{% if user.is_authenticated %}
<h4>Hi {{ user.username }}!</h4>
...
{% if adminStatus %}
<h1>test</h1>
...
{% endif %}
{% else %}
<p>You are not logged in</p>
...
{% endif %}
Original answer:
In the view, you likely don't have to stringify adminStatus.isAdmin.
context['adminStatus'] = adminStatus.isAdmin
If passed to the context as a boolean, you should be able to use this expression in the template:
{% if adminStatus %}

Related

Flask and Auth0 - How to check if user is authenticated in Jinja

I'm using Auth0 for authentication in my Flask application, and wondering how to check if the user is authenticated in the Jinja template.
I'm wondering if there's a way to do something similar to how LoginManager does it:
{% if current_user.is_anonymous %} #<-- This here
<li>Login</li>
{% else %}
<li>Profile</li>
<li>Logout</li>
{% endif %}
you have two options:
using the global g object which is automatically available in templates with the before_app_request hook, read more on the official Flask tutorial:
#bp.before_app_request
def load_logged_in_user():
"""If a user id is stored in the session, load the user object from
the database into ``g.user``."""
user_id = session.get("user_id")
if user_id is None:
g.user = None
else:
g.user = (
get_db().execute("SELECT * FROM user WHERE id = ?", (user_id,)).fetchone()
)
and then in your template :
{% if g.user %}
<li><span>{{ g.user['username'] }}</span>
<li>Log Out
{% else %}
<li>Register
<li>Log In
{% endif %}
inject your current_user object to the context processor, flask-login is your good inspiration (without decorator) :
[..]
def _get_user():
if has_request_context() and not hasattr(_request_ctx_stack.top, 'user'):
current_app.login_manager._load_user()
return getattr(_request_ctx_stack.top, 'user', None)
[..]
def _user_context_processor():
return dict(current_user=_get_user())
and then get the current app (maybe you'll need to import current_app object in your case)
[..]
app.context_processor(_user_context_processor)
then you can use the current_user like :
{% if current_user.is_anonymous %} #<-- This here
<li>Login</li>
{% else %}
<li>Profile</li>
<li>Logout</li>
{% endif %}

Using Checkbox in ListView

I'm trying to make Todo app. I want to make checkbox next to task, so when you select it, the task is set to done. The problem is, I can't really know how to change value of my BooleanField in Task Model. There are plenty of posts like this, but they are usually using functions inside views.py or use forms, but I can't relate do my form in ListView.
views.py
class TodolistView(LoginRequiredMixin, ListView):
model = Todolist
template_name = 'todolist.html'
def get_queryset(self):
return Todolist.objects.all().filter(user=self.request.user)
def get(self, request, *args, **kwargs):
todolist_objects = Todolist.objects.all()
return render(request, 'todolist.html', {'todolist_objects': todolist_objects})
todolist.html
{% extends 'base.html' %}
{% load crispy_forms_tags %}
{% block content %}
<p>Add new task</p>
{% for todo in todolist_objects %}
<div>
<form action="" method="post">
<li> {{ todo }} see details</l>
</form>
</div>
{% endfor %}
{% endblock %}

Add Cancel/Close button to Django admin model editor

I would like to add a Cancel button to the django default admin model editor to enable going back to previous page in case users decide to cancel editing/creating a model. One Option to do that will be extending the 'admin/submit_line.html' and add a Cancel button to it.
However, the default django 'admin/submit_line.html' template already includes a 'Close' button as shown in the code snippet below.
<div class="submit-row">
{% block submit-row %}
{% if show_save %}<input type="submit" value="{% trans 'Save' %}" class="default" name="_save">{% endif %}
...
{% if show_save_as_new %}<input type="submit" value="{% trans 'Save as new' %}" name="_saveasnew">{% endif %}
{% if show_save_and_add_another %}
<input type="submit" value="{% trans 'Save and add another' %}" name="_addanother">{% endif %}
...
{% if show_close %}{% trans 'Close' %}
{% endif %}
{% endblock %}
</div>
If I copied the above template and override the show_close variable to True, the Close button will be shown and closes the form as expected. But Isn't there a way to configure 'show_close' visibility from the models.py or admin.py classes?
override submit_line.html template with following content:
{% extends "admin/submit_line.html" %}
{% load i18n admin_urls %}
{% block submit-row %}
{{ block.super }}
{% if not show_close and adminform.model_admin.show_close_button %}
{% translate 'Close' %}
{% endif %}
{% endblock %}
and then in your admin class you can set field show_close_button (can choose anything you want) to True/False and close button will show/hide.
class MyAdmin(admin.ModelAdmin):
...
show_close_button = True
...
using adminform.model_admin.show_close_button you will get to that field in template.
You could define a custom AdminSite and override the method each_context to add show_close to all admin forms
def each_context(self, request):
context = super().each_context(request)
context['show_close'] = True
return context
Or you can override changeform_view on your model admins to set extra_context. You could have a base class that all the admins where you wanted this functionality inherited from
def change_view(self, request, object_id, form_url='', extra_context=None):
extra_context = extra_context or {}
extra_context['show_close'] = True
return super().change_view(self, request, object_id, form_url=form_url, extra_context=extra_context)
I was able to change these variables by overriding the ModelAdmin.changeform_view method:
class UserAdmin(ModelAdmin):
def changeform_view(self, request, object_id=None, form_url='', extra_context=None):
extra_context = extra_context or {}
extra_context["show_save"] = False
extra_context["show_save_and_continue"] = False
extra_context["show_close"] = True
return super().changeform_view(
request,
object_id=object_id,
form_url=form_url,
extra_context=extra_context
)

Django 1.5 Creating multiple instances of model in ModelAdmin

I'm kind of puzzled with this task:
I have 2 tables: User, Codes
I want to generate randomly codes in a specific pattern.
I've already written that part as a function, but it's hard to implement the function
in the ModelAdmin.
So I would be very pleased if someone knows a trick to accomplish this.
It would be enough to have a button in the User form to envoke the function, which then creates these codes.
But how do I implement such a button?
Is there a way to to this?
EDIT: typo
SOLUTION:
Since I want to generate vouchers for a particular user I can edit the admin.py like this:
class MyUserAdmin(UserAdmin):
def vouchers(self, obj):
return "<a href='%s'>Generate vouchers</a>" % reverse(gen_voucher_view, kwargs={'user':obj.pk,})
vouchers.allow_tags = True
list_display = (..., 'vouchers')
which represents a clickable link in the admin view of my User model.
Now I connect the link to my view in urls.py by adding
url(r'admin/gen_vouchers/(?P<user>\w+)/$', gen_voucher_view, name='gen_voucher_view')
to urlpatterns.
For creating the vouchers I provide a form in forms.py
class VoucherGeneratorForm(forms.Form):
user = forms.CharField(User, required=True, widget=forms.HiddenInput())
amount = forms.IntegerField(min_value=0, max_value=500, required=True)
readonly = ('user', )
In views.py I'm adding my view function:
#login_required
def gen_voucher_view(request, user):
if request.method == 'POST': # If the form has been submitted...
form = VoucherGeneratorForm(request.POST) # A form bound to the POST data
if form.is_valid(): # All validation rules pass
# GENERATE vouchers here by using form.cleaned_data['amount']
# and user (generate_vouchers is a self defined function)
vouchers = generate_vouchers(user, form.cleaned_data['amount']
# set error or info message
if len(vouchers) == form.cleaned_data['amount']:
messages.info(request, "Successfully generated %d voucher codes for %s" % (form.cleaned_data['amount'], user))
else:
messages.error(request, "Something went wrong")
u = User.objects.get(pk=user)
form = VoucherGeneratorForm(initial={'user':user}) # An unbound form
return render_to_response('admin/codes.html', {'request': request, 'user':user, 'form':form, 'userobj': u}, context_instance=RequestContext(request))
else:
form = VoucherGeneratorForm(initial={'user':user}) # An unbound form
Last but not least create a template admin/codes.html where my form is displayed:
{% extends "admin/base_site.html" %}
{% load i18n admin_static static %}
{% block breadcrumbs %}
<div class="breadcrumbs">
{% trans 'Home' %}
›
{% trans 'Users' %}
›
{% trans 'Vouchercodes' %}
›
Voucher Generator
</div>
{% endblock %}
{% block extrastyle %}{{ block.super }}<link rel="stylesheet" type="text/css" href="{% static "admin/css/dashboard.css" %}" />{% endblock %}
{% block content %}
<div id="content-main">
{% if request.user.is_active and request.user.is_staff or userobj and userobj.is_active and userobj.is_staff %}
<h1 id="generator_title">Generate vouchers for {{user}}</h1>
<form id="formular_generator" action="" method="POST" enctype="multipart/form-data">
{% csrf_token %}
<table>{{ form }}</table>
<button id="generatebutton" type="submit" name="action" value="generate">Generate</input>
</form>
{% else %}
<p>{% trans "You don't have permission to access this site." %}</p>
</div>
{% endif %}
{% endblock %}
{% block sidebar %}
{% endblock %}
Done!
To export them in a pdf I used admin actions, as propsed by Sumeet Dhariwal below.
U mean that you need to run a script from within the admin ?
If so check out django-admin-tools
http://django-admin-tools.readthedocs.org/en/latest/dashboard.html
SOLUTION FOUND:
no that was not what i meant, because I want to generate vouchers for 1 particular user and not for more, but that's a good remark.

Completely stripping certain HTML Tags in Django forms

I have a ModelForm that posts news items to a database, and it uses a javascript textarea to allow the authorized poster to insert certain pieces of HTML to style text, like bold and italics. However, since I have the template output using the "safe" filter, it outputs all the HTML the form widget tries to pass on. This includes a bothersome <br> tag that never goes away, making it so you can submit without form validation reading the field as empty and stopping you. How can I make that I can not only filter the <br> tag, but completely remove it from the data? Here is relevant code:
Models.py:
from django.db import models
from django.forms import ModelForm, forms
from django.contrib.auth.models import User
# Create your models here.
class NewsItem(models.Model):
user = models.ForeignKey(User)
date = models.DateField(auto_now=True)
news = models.TextField(max_length=100000, blank=False, help_text='HELP TEXT')
def __unicode__(self):
return u'%s %s %s' % (self.user, self.date, self.news)
class NewsForm(ModelForm):
class Meta:
model = NewsItem
exclude=('user','date',)
Views.py:
from news.models import NewsForm, NewsItem
from django.shortcuts import render
from django.http import HttpResponseRedirect, HttpResponse
def news(request):
if request.method == 'POST':
item = NewsItem(user=request.user)
form = NewsForm(request.POST, instance=item)
if form.is_valid():
form.save()
return HttpResponseRedirect('/news/')
else:
form = NewsForm()
news_list = NewsItem.objects.all()
return render(request, 'news_list.html', {'news_list': news_list, 'form': form})
news_list.html:
{% extends "base.html" %}
{% block title %}News in the Corps{% endblock %}
{% block content %}
<h2 id="page_h">News in the Corps</h2>
{% if user.is_authenticated %}
<h3>Post News</h3>
<script src="{{ STATIC_URL }}nicEdit.js" type="text/javascript"></script>
<script type="text/javascript">bkLib.onDomLoaded(nicEditors.allTextAreas);</script>
<div id="news_poster">
<form id="news_poster" action="/news/" method="POST">{% csrf_token %}
{{ form }}
<input type="submit" value="Submit" />
</form>
</div>
{% endif %}
<ul id="events_list">
{% if news_list %}
<div id="news_list">
{% for news in news_list %}
{% if news.id == 1 %}
<hr />
{% endif %}
<div id="{{ news.id }}" class="news_item">
<p class="poster">Posted By: {{ news.user }} | Posted On: {{ news.date }} | Link</p>
<div id="news_item">
{{ news.news|safe }}
</div>
</div>
<hr />
{% endfor %}
</div>
{% endif %}
</ul>
{% endblock %}
You can try the removetags template filter:
{{ news.news|removetags:"br"|safe }}
I can't help but thinking that the "removetags" as Timmy O'Mahony suggested might work if it was structured like this:
{{ news.news|safe|removetags:"br"}}
Give it a shot and see if it works. I would reply, but my karma's not height enough to directly reply to an answer with a suggestion.