I have 2 radio buttons in a ChoiceField and I would like to display some parts of the template, depending of witch radio button is selected.
Following :
form.py
class CtdForm(forms.Form):
protocol_name = forms.CharField(max_length=100)
rb = forms.BooleanField(required=False, label='RB')
mr = forms.BooleanField(required=False, label='MR')
CHOICES = [('rb' ,'RB'), ('mr', 'MR')]
analyse_type = forms.ChoiceField(choices=CHOICES, widget=forms.RadioSelect)
template html
...
{{ form.analyse_type }}
Here I would like to test which button is selected and display the template depending of the selection
something like : {% if form.analyse_type.? == true %}
...
I test a lot of syntaxe with form.analyse_type.? like form.analyse_type.field.widget.choices to have each choices in a loop ect. , but I do not found the right one returning the selected radiobutton...
Maybe this way is not the right one to do what I want.
If you have any idea, solution thank you ;)
Edit for user2497126
Thanks for all tips :) !
I have an error Uncaught Error: GET_ELEMENTS: -> form[data-sb-form-api-token] seems to be in link with the object analyse_type
As requested, following a print screen with the html element.I tired different synthaxe like
let radioValue =$("input[name='analyse_type']:checked").value();
I also put my HTML code in case
{% extends "index.html" %}
{% load static %}
{% block content %}
<div style="padding-left: 30%;" class="col-lg-6 col-xl-6"
<h2 class="h4 fw-bolder">
Analyse Type
</h2>
<br>
{{ form.analyse_type }}
<br> </div>
<div id="template-one" style="display:none;">
<div style="padding-right: 30%;" class="col-lg-6 col-xl-6">
<h2 class="h4 fw-bolder">
TEST
</h2>
</div>
</div>
{% endblock %}
{% block javascript %}
<script type="text/javascript">
$(document).ready(function () {
$(".custom-control-input").change(function () {
let radioValue = $("input[name='analyse_type']:checked").value();
let templateOne = document.getElementById('template-one')
if (radioValue == "rb") {
$("#template-one").show();
} else {
$("#template-one").hide();
}
});
});
</script>
{% endblock javascript %}
EDIT
if I do a
console.log($("input[name='analyse_type']:checked").val())
in the debugger of chrome I have a return of rb.
But the error is still there with no result.
I also change the html, include the template-one in the same div of the form like your example
The problem seems here
$(".custom-control-input").change(function () {
I replace .custom by select or select#id_analyse_type, based on some forum answers, but I have no result
Thanks for your time and your help :)
EDIT
Here the solution :
{% block javascript %}
<script type="text/javascript">
$(document).ready(function () {
let radioValue = $("input[name='analyse_type']:checked").val();
if (radioValue == "rb") {
$("#template-one").show();
} else {
$("#template-one").hide();
}
$('#id_analyse_type').change(function () {
let radioValue = $("input[name='analyse_type']:checked").val();
if (radioValue == "rb") {
$("#template-one").show();
} else {
$("#template-one").hide();
}
});
});
</script>
{% endblock javascript %}
Thank you for your help !
Here is an edited answer which I have tried to adapt to your question
For the change function (i.e when selecting the radio) inspect and replace the class value with the one in your radio input. Also ensure you supply the correct name when instantiating the variable radioValue, I have used 'analyze_type' for the sake of the example but inspect and confirm the correct name value of the radio input.
You can achieve it using JS like this in your template
{% extends "base.html" %}
{% block title %}Form title{% endblock title %}
{% block content %}
<!-- page content -->
<div class="x_content">
{{ form.analyse_type}}
<div id="template-one" style="display:none;">
Template one
</div>
<div id="template-two" style="display:none;">
Template two
</div>
</div>
<!-- /page content -->
{% endblock %}
{% block javascript %}
<script>
$(document).ready(function(){
$(".custom-control-input").change(function(){
let radioValue = $("input[name='analyse_type']:checked").val();
let templateOne = document.getElementById('template-one')
if(radioValue == "RB"){
$("#template-one").show();
$("#template-two").hide();
}
else {
$("#template-two").show();
$("#template-one").hide();
}
});
});
</script>
{% endblock javascript %}
I have a template called base.html. This template contains a block called pagescripts at the bottom after jQuery has been loaded, like this:
<div class="container-fluid">
{% block content %}
{% endblock %}
</div>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script>
<script defer src="https://use.fontawesome.com/releases/v5.0.10/js/all.js" integrity="sha384-slN8GvtUJGnv6ca26v8EzVaR9DC58QEwsIk9q1QXdCU8Yu8ck/tL/5szYlBbqmS+" crossorigin="anonymous"></script>
{% block pagescripts %}
{% endblock %}
Next, I have a template tag that is an inclusion tag for displaying a fancy-looking boostrap 4 card for a particular news article, like this:
#register.inclusion_tag('long_article_card.html', takes_context=True)
def show_long_card(context, article):
try:
contextForm = context['form']
except KeyError:
contextForm = None
return {'article':article, 'form': contextForm}
Now, within that long_article_card.html, I want to add a script to the pagescripts block from base.html. So, in long_article_card.html, I have this:
<div class="target">TARGET HERE</div>
<a class="dropdown-item" id="lean-vote-xl" href="#">Extreme Left</a>
{% block pagescripts %}
<script>
$(document).ready(function(){
$("#lean-vote-xl").on('click', function(){
$.ajax({
url:'/webproxy/v/?i=a&pk={{article.id}}&t=1&v=3',
type:'get',
dataType:'html',
crossDomain:true,
success:function(data)
{
var outputCard = "<div class=\"target\"><br><h2>That worked</h2></div>";
$(".target").html(outputCard);
},
error: function(data) {
var outputCard = "<div class=\"target\"><br><h2>Load Error</h2></div>";
$(".target").html(outputCard);
}
});
}); // end id_url_text
});
</script>
{% endblock %}
That template tag is then called from an article detail template called article/detail.html, which extends base.html.
{% extends 'base/base.html' %}
<div class="row">
{% show_long_card article %}
</div>
But that results in the javascript in long_article_card.html being rendered at the end of long_article_card.html, which means it is rendered before jQuery is loaded at the bottom of the page, therefore the script doesn't work because $ is not defined yet. What I need to happen is for the block pagescripts from long_article_card.html to be rendered at the very bottom of the page, essentially at the bottom of base.html. I need django to take the block pagescripts from long_article_card.html, pass it up to article/detail.html, and then article/detail.html to pass it up to base.html, then base.html includes it in its pagescripts block that is at the very bottom of base.html after jQuery is loaded.
I can't have long_article_card.html extend the article/detail.html because it causes a recursion error. Is there any way for long_article_card.html to add things to base.html's pagescripts block?
Thank you.
django-sekizai was built for this use case. It may be of use to you
I would like to render a constructions like:
<a href='/home'>Home</a>
<span class='active'>Community</span>
<a href='/about'>About</a>
Where Community is selected menu item. I have menu with same options for several templates but I would not like to create combinations for each template:
<!-- for Home template-->
<span class='active'>Home</span>
<a href='/comminuty'>Community</a>
<a href='/about'>About</a>
...
<!-- for Community template-->
<a href='/home'>Home</a>
<span class='active'>Community</span>
<a href='/about'>About</a>
...
<!-- for About template-->
<a href='/home'>Home</a>
<a href='/community'>Community</a>
<span class='active'>About</span>
We have permanent list of menu items, so, it can be more effective way - to create only one generalized structure of menu then render menu with required option for template.
For example it could be a tag that allows to do that.
Figured out another way to do it, elegant enough thanks to this answer : https://stackoverflow.com/a/17614086/34871
Given an url pattern such as:
url(r'^some-url', "myapp.myview", name='my_view_name'),
my_view_name is available to the template through request ( remember you need to use a RequestContext - which is implicit when using render_to_response )
Then menu items may look like :
<li class="{% if request.resolver_match.url_name == "my_view_name" %}active{% endif %}">Shortcut1</li>
<li class="{% if request.resolver_match.url_name == "my_view_name2" %}active{% endif %}">Shortcut2</li>
etc.
This way, the url can change and it still works if url parameters vary, and you don't need to keep a list of menu items elsewhere.
Using template tag
You can simply use the following template tag:
# path/to/templatetags/mytags.py
import re
from django import template
try:
from django.urls import reverse, NoReverseMatch
except ImportError:
from django.core.urlresolvers import reverse, NoReverseMatch
register = template.Library()
#register.simple_tag(takes_context=True)
def active(context, pattern_or_urlname):
try:
pattern = '^' + reverse(pattern_or_urlname)
except NoReverseMatch:
pattern = pattern_or_urlname
path = context['request'].path
if re.search(pattern, path):
return 'active'
return ''
So, in you your template:
{% load mytags %}
<nav><ul>
<li class="nav-home {% active 'url-name' %}">Home</li>
<li class="nav-blog {% active '^/regex/' %}">Blog</li>
</ul></nav>
Using only HTML & CSS
There is another approach, using only HTML & CSS, that you can use in any framework or static sites.
Considering you have a navigation menu like this one:
<nav><ul>
<li class="nav-home">Home</li>
<li class="nav-blog">Blog</li>
<li class="nav-contact">Contact</li>
</ul></nav>
Create some base templates, one for each session of your site, as for example:
home.html
base_blog.html
base_contact.html
All these templates extending base.html with a block "section", as for example:
...
<body id="{% block section %}section-generic{% endblock %}">
...
Then, taking the base_blog.html as example, you must have the following:
{% extends "base.html" %}
{% block section %}section-blog{% endblock %}
Now it is easy to define the actived menu item using CSS only:
#section-home .nav-home,
#section-blog .nav-blog,
#section-contact .nav-contact { background-color: #ccc; }
I found easy and elegant DRY solution.
It's the snippet:
http://djangosnippets.org/snippets/2421/
**Placed in templates/includes/tabs.html**
<ul class="tab-menu">
<li class="{% if active_tab == 'tab1' %} active{% endif %}">Tab 1</li>
<li class="{% if active_tab == 'tab2' %} active{% endif %}">Tab 2</li>
<li class="{% if active_tab == 'tab3' %} active{% endif %}">Tab 3</li>
</ul>
**Placed in your page template**
{% include "includes/tabs.html" with active_tab='tab1' %}
You could make a context variable links with the name, URL and whether it's an active item:
{% for name, url, active in links %}
{% if active %}
<span class='active'>{{ name }}</span>
{% else %}
<a href='{{ url }}'>{{ name }}</a>
{% endif %}
{% endfor %}
If this menu is present on all pages, you could use a context processor:
def menu_links(request):
links = []
# write code here to construct links
return { 'links': links }
Then, in your settings file, add that function to TEMPLATE_CONTEXT_PROCESSORS as follows: path.to.where.that.function.is.located.menu_links. This means the function menu_links will be called for every template and that means the variable links is available in each template.
I have come up with a way to utilize block tags within menu-containing parent template to achieve something like this.
base.html - the parent template:
Home
About
Contact
{% block content %}{% endblock %}
about.html - template for a specific page:
{% extends "base.html" %}
{% block menu_about_class %}active{% endblock %}
{% block content %}
About page content...
{% endblock %}
As you can see, the thing that varies between different page templates is the name of the block containing active. contact.html would make use of menu_contact_class, and so on.
One benefit of this approach is that you can have multiple subpages with the same active menu item. For example, an about page might have subpages giving information about each team members of a company. It could make sense to have the About menu item stay active for each of these subpages.
Here ist my solution:
{% url 'module:list' as list_url %}
{% url 'module:create' as create_url %}
<ul>
<li>List Page</li>
<li>Creation Page</li>
</ul>
Assuming the nav item is a link with the same URL as the current page, you could just use JavaScript. Here's an annotated method that I use to add a class="active" to a li in a navigation menu with class="nav":
// Get the path name (the part directly after the URL) and append a trailing slash
// For example, 'http://www.example.com/subpage1/sub-subpage/'
// would become '/subpage1/'
var pathName = '/' + window.location.pathname.split('/')[1];
if ( pathName != '/' ) { pathName = pathName + '/'; }
// Form the rest of the URL, so that we now have 'http://www.example.com/subpage1/'
// This returns a top-level nav item
var url = window.location.protocol + '//' +
window.location.host +
pathName;
console.log(url);
// Add an 'active' class to the navigation list item that contains this url
var $links = document.querySelectorAll('.nav a');
$link = Array.prototype.filter.call( $links, function(el) {
return el.href === url;
})[0];
$link.parentNode.className += ' active';
This method means you can simply pop it into your base template once and forget about it. No repetition, and no manual specification of the page URL in each template.
One caveat: this obviously only works if the url found matches a navigation link href. It would additionally be possible to specify a couple of special use cases in the JS, or target a different parent element as needed.
Here's a runnable example (keep in mind, snippets run on StackSnippets):
// Get the path name (the part directly after the URL) and append a trailing slash
// For example, 'http://www.example.com/subpage1/sub-subpage/'
// would become '/subpage1/'
var pathName = '/' + window.location.pathname.split('/')[1];
if ( pathName != '/' ) { pathName = pathName + '/'; }
// Form the rest of the URL, so that we now have 'http://www.example.com/subpage1/'
// This returns a top-level nav item
var url = window.location.protocol + '//' +
window.location.host +
pathName;
console.log(url);
// Add an 'active' class to the navigation list item that contains this url
var $links = document.querySelectorAll('.nav a');
$link = Array.prototype.filter.call( $links, function(el) {
return el.href === url;
})[0];
$link.parentNode.className += ' active';
li {
display: inline-block;
margin: 0 10px;
}
a {
color: black;
text-decoration: none;
}
.active a {
color: red;
}
<ul class="nav">
<li>
Example Link
</li>
<li>
This Snippet
</li>
<li>
Google
</li>
<li>
StackOverflow
</li>
</ul>
I ran into this challenge today with how to dynamically activate a "category" in a sidebar. The categories have slugs which are from the DB.
I solved it by checking to see category slug was in the current path. The slugs are unique (standard practice) so I think this should work without any conflicts.
{% if category.slug in request.path %}active{% endif %}
Full example code of the loop to get the categories and activate the current one.
{% for category in categories %}
<a class="list-group-item {% if category.slug in request.path %}active{% endif %}" href="{% url 'help:category_index' category.slug %}">
<span class="badge">{{ category.article_set.count }}</span>
{{ category.title }}
</a>
{% endfor %}
Based on #vincent's answer, there is an easier way to do this without messing up with django url patterns.
The current request path can be checked against the rendered menu item path, and if they match then this is the active item.
In the following example I use django-mptt to render the menu but one can replace node.path with each menu item path.
<li class="{% if node.path == request.path %}active{% endif %}">
node.title
</li>
I am using an easier and pure CSS solution. It has its limitations, of which I know and can live with, but it avoids clumsy CSS class selectors, like this:
index
Because a space character before active is missing the class selector gets called itemactive instead of item active and this isn't exactly too difficult to get wrong like that.
For me this pure CSS solution works much better:
a.item /* all menu items are of this class */
{
color: black;
text-decoration: none;
}
a.item[href~="{{ request.path }}"] /* just the one which is selected matches */
{
color: red;
text-decoration: underline;
}
Notice: This even works if the URL has additional path components, because then href also matches partially. That could eventually cause 'collisions' with more than one match, but often enough it just works, because on well structured websites a "subdirectory" of an URL usually is a child of the selected menu item.
I personally find the simplest way is to create blocks for each link like so:
# base.py
...
<a href="{% url 'home:index' %}" class={% block tab1_active %}{% endblock %}>
...
<a href="{% url 'home:form' %}" class={% block tab2_active %}{% endblock %}>
...
And then in each relative template declare that link as "active" e.g.:
tab1 template:
{% block tab1_active %}"active"{% endblock %}
tab2 template:
{% block tab2_active %}"active"{% endblock %}
Simply use template tags
# app/templatetags/cores.py
from django import template
from django.shortcuts import reverse
register = template.Library()
#register.simple_tag
def active(request, url, classname):
if request.path == reverse(url):
return classname
return ""
Do like this in your template
{% load cores %}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Example</title>
</head>
<body>
<div>
myUrl
</div>
</body>
</html>
Have fun 😎
I'm trying to create a drag and drop function in my project that when ever i drop an item it automatically saves in the backend side.
<script style="text/javascript">
$(function() {
$( "#roles li" ).draggable({
appendTo: "body",
helper: "clone",
});
$( "#item-roles li" ).droppable({
activeClass: "ui-state-default",
hoverClass: "ui-state-hover",
accept: ":not(.ui-sortable-helper)",
drop: function( event, ui ) {
alert('you drop this')
$( "<li></li>" ).text( ui.draggable.text() ).appendTo( this );
}
})
});
In my Html code goes here.
<div id="item-roles">
<h3>Role in {{item.name|title}} Item</h3>
<ul>
<h3>Drag role here!</h3>
{% for item_role in item_roles %}
<li class="placeholder" style="list-style-type: none;">
{{item_role.show_role}} Remove
</li>
{% empty%}
<li>No items found</li>
{% endfor %}
</ul>
</div>
<div id="roles">
<h3>Roles in this Show</h3>
<ul>
{% for role in roles %}
<li>
<a class="role-detail">{{ role.role_name }}</a>
</li>
{% empty %}
<p>No show roles </p>
{% endfor %}
</ul>
You can use dajaxice (and dajax) for calling your django functions "from" javascript. Now you need to write down your python code which is missing from your question...
I have this code I'm using to generate a list of records categorized into year, make, series, body style, and color for vehicles. I'd like to customize this further this way:
for the year, I want to have only up to 2004 being individual...the rest will fall under other i.e. 2009, 2008, 2007, 2006, 2005, 2004, Other.
for the make, I want to display the six makes with the highest popularity...there's a field in the model I'm using to assign the popularity of a make with a value of primary (highest), secondary or tertiary. The rest will fall under Other.
For the body style and color, I want to have the items having less than 3 records falling under Other.
My code is as below:
year_count = vehicle_query.order_by(
'-common_vehicle__year__year').values('common_vehicle__year__year').
annotate(count=Count('id'))
make_count = vehicle_query.order_by(
'common_vehicle__series__model__manufacturer__manufacturer').
values('common_vehicle__series__model__manufacturer__manufacturer').
annotate(count=Count('id'))
style_count = vehicle_query.order_by(
'common_vehicle__body_style__style').values
('common_vehicle__body_style__style').annotate(count=Count('id'))
colour_count = vehicle_query.order_by(
'exterior_colour__exterior_colour').values(
'exterior_colour__exterior_colour').annotate(count=Count('id'))
The bulk of what you're asking would probably better be handled outside of Django and instead by client-side javascript. To be clear, you could have portions handled by Django, but it would be cleaner not doing so. There are benefits to doing it this way:
Your Django template code stays cleaner
It will degrade nicely
You can later update the interface (change the javascript) and not have to worry about breaking the Django template
To handle this you could simply make a script that when given a <ul> tag (and maybe some arguments) will render that list in the format you're asking about.
Here's a simple example using jQuery. For this example, I'm going to wrap the functionality in a using a jQuery plugin pattern.
Say your django template outputs the following...
<ul>
<li>Chevy</li>
<li>Mazda</li>
<li>Honda</li>
<li>Ford</li>
<li>BMW</li>
</ul>
jquery.showmorelist.js
(function($) {
$.fn.ShowMoreList = function(visibleItemCount) {
// Wrap parent element
var parent = $(this).wrap('<div class="show-more-list"></div>').parent();
var ul = $(this);
// Enumerate children and hide extras
var counter = 0;
$(this).children().filter('li').each(function(){
counter += 1;
if (counter > visibleItemCount) {
$(this).hide();
$(this).addClass('hidden');
}
});
// Add link and bind click
var link = $('> Show More').click(function(){
$(ul).children().filter('.hidden').show();
});
$(parent).append(link);
}
})(jQuery);
page.html
<script type="text/javascript" src="jquery.showmorelist.js"></script>
<script type="text/javascript">
// On page load...
$(function() {
$('ul').ShowMoreList(4); // Shows only the first 4 items
});
</script>
This is a rather simple example, and it won't switch the "Show More" to "Hide More" but you should be able to figure that out from the context.
I managed to get a solution, so I thought it'd be good to update the answer here:
In the head section I have this:
<script type="text/javascript" src="{{ MEDIA_URL }}share/jquery/jquery.min.js"></SCRIPT>
<script type="text/javascript">
(function($) {
$(document).ready(function() {
//hide the additional content under "Display More"
$("div.additional_content").hide();
$("a.more").click(function () {
//show or hide the additional content
$(this).siblings("div.additional_content").toggle();
//change the attributes and text value of the link toggle
if($(this).text() == "Display Less"){
$(this).removeClass("less");
$(this).addClass("more");
$(this).html("Display More");
}else{
$(this).removeClass("more");
$(this).addClass("less");
$(this).html("Display Less");
}
return false;
});
});
})(jQuery);
Then wherever I want to reduce the number of available options I have this:
<div class="module_wrap">
<div class="module"> {% if year_count %} <strong>{% trans "Year" %}</strong> <br />
{% for item in year_count|slice:":6" %}
<ul>
<li> {{ item.common_vehicle__year__year }} ({{ item.count }}) {% if request.session.chosen_year %} <img src="{{ MEDIA_URL }}img/undo.gif" border="0" alt="Remove Year Filter" title="Remove Year Filter" /> {% endif %} </li>
</ul>
{% endfor %}
<div class="additional_content"> {% for item in year_count|slice:"6:" %}
<ul>
<li> {{ item.common_vehicle__year__year }} ({{ item.count }})</li>
</ul>
{% endfor %} </div>
{% if year_count|slice:"6:" %}Display More<br />
{% endif %} <br />
</div>
</div>
{% endif %}