I've in Django 1.11 a base.html which contains all the scripts references.
Then, I've another page.html that extendes base.html with {% extends base.html %} and {% block content %} / {% endblock content %} tags.
Well. In base.html I've a reference to Chartjs.js plugin. In page.html, if I try to call to Chart() function or just $ jquery, I get "function is not defined". If I open console debugger and try to call $ or just Chart(), it works. So I think that there's a problem with loading time. The page.html is rendered before the js are downloaded or requested!
How can I solve it? I've done it before, I don't know what could be the problem.
Thanks!
Without your code showing, hard to tell. Based on what you wrote, perhaps you forgot to put a block and block.super to get the parent (base.html's) Chartjs reference.
This should be in your page.html at the bottom after your {% endblock content %} tag. See example below (using DataTables as example since your code is not shown):
</div>
{% endblock content %}
{% block javascript %}
{{ block.super }}
<script type="application/javascript">
$(document).ready(function () {
$('#table').DataTable({
responsive: true,
});
});
</script>
{% endblock javascript %}
Base.html would have the js section enclosed in
{% block javascript %} …. {% endblock javascript %}
Related
I want to add custom JavaScript everytime as per the logic in my backend.
For example:
--views.py--
...
js="JavaScript which i want to add"
js_={'js_script':js}
return render(request,'html.html',context=js_)
--html.html--
....
<script>
{{js_script}}
</script>
But this does not properly work and a weird " is added in various places in the html source code everytime and the work is not accomplished. Please Help if you have a work around.
Just tried something and it worked.
source: django docs - safe templatetag
in context you are doing it right example:
context = {
'js_var': 'console.log("JavaScript which i want to add")',
}
in template add template tag "safe" it will remove the """ 's:
<script>
console.log('sanity check');
{{js_var|safe}}
</script>
output:
sanity check
JavaScript which i want to add
Have a good day!
Tell me if this worked for you!
i think you want to load custom javascript code locally for particular page, to do that the proper way without mixing things, you need to define {% block %} in your base.html template and via DTL inheritance mechanism you can load you javascript the right way in right order without any conflict
in base.html define, let say {% block javascripts_local %}{% endblock %} like
{% load static %}
<!doctype html>
<html class="no-js" lang="{% block lang %}en{% endblock %}">
<head>
[..]
</head>
<body{% block body_attributes %}{% endblock %}>
[..]
{% block javascripts %}
<!-- i'm using HTML5 Boiler Plate template -->
<script src="{% static 'js/vendor/modernizr-3.7.1.min.js' %}"></script>
<script src="{% static 'js/plugins.js' %}"></script>
<script src="{% static 'js/main.js' %}"></script>
<!-- override this block in child template -->
{% block javascripts_local %}{% endblock %}
{% endblock %}
</body>
</html>
and then in your child template override the block
{% extends 'base.html' %}
{% load static %}
[..]
{% block javascripts_local %}
<script>
// Your javascript code goes here
</script>
{% endblock %}
I'm using CKEditor in my flask app to give users WYSIWYG in my text fields, and I'm loading the script in the base.html jinja template.
However, I get console errors in the templates where I don't have a text field:
[CKEDITOR] Error code: editor-incorrect-element.
Object { element: "description" }
Is there a workaround for this?
Thank you!!
I solved this by adding an empty block in my base.html instead of the script:
{% block CKEditor_js %}
{% endblock CKEditor_js %}
Then I added the script in a block at the bottom of the pages I need the script:
{% block CKEditor_js %}
<script src="{{ url_for('static', filename='js/cke.js') }}"></script>
{% endblock CKEditor_js %}
And finally a very small JS file, in this case cke.js, with just:
CKEDITOR.replace("description");
I'm having issues calling functions from twig views in Symfony 4.4. This view is called UserList.html.view and it extends base.html.twig
The beginning of the file is as following :
{% extends 'base.html.twig' %}
{% block body %}
{% block javascripts %}
<script src="{{ asset('build/js/custom.js') }}"></script>
...
I also tried with Encore by adding an entry but it's not working. The only way to access external functions is to call them from the parent view which is not what I want obviously.
The error I get :
Uncaught ReferenceError: coucou is not defined
at HTMLButtonElement.onclick (VM3883 manageAccounts:183)
onclick # VM3883 manageAccounts:183
I read some other posts about this but none of them actually provided a working solution.
Thank you for your help !
Hello there and welcome to SO forums. It is hard to put a finger on your issue based on the provided pieces of code - but the twig block usage might be something that is not implemented / working as you assume. Namely the javascript block inside the implemented body block has no relevancy to the a similarly named block in base template (I assume that there is similarly named block there) because it is placed inside the body block which you are completely overwriting in this UserList.html.twig template.
A basic working twig structure would be something like this:
base.html.twig
<html>
<head>
...
</head>
<body>
...
{% block body %}
...
{% endblock %}
...
{% block javascripts %}
...
{% endblock %}
...
</body>
</html>
UserList.html.twig - please note the parent() call that makes sure that the block contents from the inherited template are included as well (i.e. if you have some generic jquery or some other generic js includes defined there) - without the parent() you will be defining the javascripts block contents completely again in this template.
{% extends 'base.html.twig' %}
{% block body %}
...
{% endblock %}
{% block javascripts %}
{{ parent() }}
<script src="{{ asset('build/js/custom.js') }}"></script>
{% endblock %}
I hope everyone is doing great during this troubles times ! France started containment last week so I had plenty of time finding the solution.
Dumbest thing ever but I didn't know that..
In your js external files, you have to declare your functions like this :
window.myfunction = function myfonction(){}
That's all..
Could that potentialy cause security issues ? I don't know so I'm asking xD
I have a base_generic.html page in django that has the standard UI elements (navbar, footer, etc.), and I have a list.html page which extends the base_generic.html page. The list.html page is using a javascript function that is only used in this page, but for it to work, I have to include it in the base_generic.html page.
How can I include this javascript function in list.html using Django's built-in template tags and features?
Should I use {% verbatim %} or {% scripts %} or another tag template?
Should I include this inline with the {% block content %} that has the html for this django template, or should I place it before or after the {% block content %}?
You have several ways of accomplish what you want:
Just add the javascript snippet inside the {% block content %}
{% block content %}
my javascript();
{% endblock content %}
Use the include statement to a file with your javascript, again, inside the {% block content %}
{% include 'my_javascript.html' %}
In this way, you can reuse your javascript code on other pages.
Create a new block in base_generic.html, like:
{% block my_javascript %}{% endblock my_javascript %}
And in you child template, add the javascript as told in the first points iside these tags, in this case it can be outside or inside the {% block content %}.
An alternative would be pass the path for the js file in your views.py:
context = {
'scripts_to_include':['/static/js/my_js_file.js']
}
You can obviously include multiple js files here. Then, in your template:
{% if scripts_to_include %}
{% for script_url in scripts_to_include %}
<script src="{{script_url}}"></script>
{% endfor %}
{% endif %}
I like this, cause the js files can still be stored in a directory (instead of putting it right into html), JS files are also reusable.
I have a question about, how to separate a loading specify javascript file of specify template twig file.
I got for example admin.html.twig which extends base.html.twig, in base i got
{% block javascripts %}
<script src="/assets/js/core/jquery.min.js"></script>
<script src="/assets/js/core/popper.min.js"></script>
<script src="/assets/js/core/bootstrap-material-design.min.js"></script>
<script src="/assets/js/plugins/perfect-scrollbar.jquery.min.js"></script>
<script async defer src="https://buttons.github.io/buttons.j"></script>
<script src="/assets/js/plugins/chartist.min.js"></script>
<script src="/assets/js/plugins/bootstrap-notify.js"></script>
<script src="/assets/js/material-dashboard.min.js"></script>
<script src="/assets/demo/jquery.sharrre.js"></script>
<script src="/assets/js/sparkline.js"></script>
<script src="/assets/js/plugins/chartjs.min.js"></script>
{% endblock %}
and I got next file like dashboard.html.twig which extends a admin.html.twig file, and my question is that in dashboard.html.twig file i got at the a little writed-self small javascript code, and this javascript of course use a jquery library but this library i loaded in base.html.twig file a next of my selfwrited script which is in dashboard.html.twig.
My question is, how i can for example load my small code of javascript (of course i can save it in separated file like mycode.js) but how to load only when this route of dashboard.html.twig file i used and after jquery is loaded ? becouse in another routers i dont need this mycode.js so I dont wanna put it to base.html.twig file in javascript block, any idea ?
If dashboard directly extends admin then u can do the following to ensure to load all the admin scripts and to add the dashboard specific script:
{% extends "admin.html.twig" %}
{% block javascripts %}
{{ parent() }} {# execute the parent block, thus loading all scripts in admin #}
<script src="/assets/js/dashboard/mycode.js"></script>
{% endblock %}
You can dived
{% extends "admin.html.twig" %} {# use only in case your all templates are at the same places like app/Resources/views/admin.html.twig #}
{% block javascripts %}
{{ parent() }} {# loads the parent javascript block, from the template you are extending in first line. #}
<script src="/assets/js/dashboard/code.js"></script>
{% endblock %}
in case you are trying to extend a template from another bundle then you can use this
{% extends "YourBundleName:Default:admin.html.twig" %} {# YourControllerRelativeName just in case your view structure is like views/Default/admin.html.twig#}
{% block javascripts %}
{{ parent() }} {# loads the parent javascript block, from the template you are extending in first line. #}
<script src="/assets/js/dashboard/code.js"></script>
{% endblock %}
to the better understanding you should read a little here:
https://symfony.com/doc/2.8/templating.html
Note:- in the documents you should change version as per your current version.
I would suggest the following solution.
Declare the following block in base.html.twig after {% block javascripts %}{% endblock %}
{% block javascript_page %}{# specific code for current page #}{% endblock %}
Then in your page you can include page specific scripts
{% extends "admin.html.twig" %} or {% extends "base.html.twig" %}
{% block javascript_page %}
<script src="/assets/js/pages/my_page.js"></script>
{% endblock %}
Although answer by DarkBee is also correct but in this way you don't have to worry about calling {{ parent() }} in each page.