Javascript read django variable You might want to call that trans function in the view to get the value, and then render the value in the json_script tag. The goal is to plot multiple markers on the map. The main problem is that it hard to come up with a solution that can be used in different places of html without introducing XSS. The project is on Django Jul 23, 2025 · In Django, extracting and importing files is a common requirement for various applications. If x is supposed to be 2 just write it there. Jan 12, 2021 · New to Django and its templates. Finally, you could store some of these values in cookies server side, and then access them from Javascript. My code in the renderd htm is: Django laflet generatet map script where the map is defined: Where is the code for the trigger action here? Finally when do you want to pass it view and how? Jul 23, 2025 · Accessing dictionary elements in Django templates can be accomplished through various methods, including direct access using dot or bracket notation, handling missing keys with default values or conditional checks, and utilizing custom template filters and tags for advanced use cases. A typical approach is serializing Python data structures (like dictionaries or lists) into JSON and rendering it in the template. urls. com/using-alpine-js-in-django-a-lightweight-alternative-to-heavy-frontend-frameworks-feeb15c3bc20 Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more. Also, you can easily write your own custom model fields. In my case I only added task-update, it looks something like this JS_URLS = ( 'task-update Mar 25, 2022 · So, no, you can not use a JavaScript variable in Django template code. staticfiles to help you manage them. Nov 9, 2022 · Javascript, of course, runs in the browser, and you can't pass a javascript variable to a django function after it has arrived at the client. Model): LOW = 0 NORMAL = 1 … 5 days ago · Managing static files (e. Unfortunately, the below code is failing. One of the simplest and most useful features of Django templates is the use of variables. Is there any way to access values from DJANGO_SETTINGS_M Sep 8, 2017 · I am trying to pass my variable from Django's view to a javascript file. Found. Historically, `RequestContext` was used to inject context variables via processors, but modern Django (3. Specifically, the string is the relative path of an image and it is to be used in the django template with the django template tag static. Creating Environment Variables There is a long standing ticket in django about template filter which would output json in templates. I'm trying to set a variable given a specific situation, and that part I think ill be able to do, the code below isn't the exact conditions its just there as a demo. Django’s template language is designed to strike a balance between power and ease. Learn how to effectively access Django variables in your external JavaScript files and streamline your web development process. It doesn’t even begin to run until after the page has been sent. May 29, 2010 · If the question is how to combine multiple JavaScript files into one global scope in an HTML document, so that both forward and backward variable, constant, and function references are valid, then here is an efficient way to do this. I know some people just declare global variables then use them in their embedded JS. Instead of writing the same js function 7x, c Jun 26, 2019 · I am attempting to add a custom Javascript variable to my Django static url. I would like to pass a data from Django's views. bash_profile and access it as described in the photos attached, however, it does not seem to be working. py” in JavaScript within Django Template: A Practical Approach When developing web applications using Django, it is common to encounter situations where you need to pass data from the backend (specifically, the “views. contrib. If a answer is ok, program should say ¡very good! Django + Javascript: <script> var var1 = document. The challenge? Django **does not expose `DEBUG` directly in template contexts by default**. It prepares the page and sends it to the browser. Nov 24, 2017 · Learn how to pass values or parameters from HTML to Django Views for better web development. Built-in tag reference ¶ autoescape ¶ Controls the current auto-escaping behavior. py context data into an external javascript file, so as to run the js function. I've tried two things: Set the jQuery var to a Django template Dec 10, 2013 · I want to send a string value as a javascript variable from client side to be used in the django-template. Feb 20, 2023 · Using Variables from “views. conf. Afterwards add simply add JS_URLS to your settings. If that same html file also includes an external javascript file, that javascript can refer to that variable. We only need to add an import statement 'from django. Thus, Django and Javascript can't share objects/data. In your page, with the current Javascript, you will have something like: <script type="text/javascript"> function getOption(sel){ var country Dec 31, 2020 · Hi, What I would like to do, is insert the value of a JavaScript variable into Django model. In this article, we'll explore how django-environ can help align your Django project with the 12-factor principles by managing environment variables and separating configuration from code. I have an update chart function that updates the data after certain buttons are clicked. A more sensible approach in my opinion would be to check the context for the variable before attempting to assign it: Dec 9, 2016 · So, all the external JavaScript files refered after the variable assignment, can use this variable without having to declare it again. <Variable Name>. While this protects against common vulnerabilities like Cross-Site Scripting (XSS), it can sometimes lead to unexpected behavior—especially when working with URLs AJAX provides a way to send a GET or POST request to a Django view and receive any returned data without a page refresh. May 25, 2020 · A side note is that you probably "shouldn't be doing this": it sounds like you would benefit from using something like Django Rest Framework to provide an API to your models and integrate the javascript to that. How about assigning variables to other variables present in the context? And on a different note: allowing templates to arbitrarily assign context variables without checking if they exist already may have security implications. If you’re looking to prevent someone from looking at the source for your page and finding your API key, then you need to take a different approach. If you want the JavaScript to cause something to happen on the server, it does so by making an AJAX-style Jun 9, 2023 · To streamline this process in Django, we can leverage a powerful library called django-environ. Normally, most of the external data you want to use in a template, comes from a model. Example: Aug 9, 2024 · One common requirement in Django projects is accessing the settings variables defined in the settings. It is recommended that you use the automatic documentation, if available, as this will also include documentation for any custom tags or filters installed. Finally, the update_counter method returns a response, which is Feb 22, 2023 · In your Django settings file, import dotenv and call load_dotenv (). What are the 12-factor principles? Dec 9, 2020 · Hello, I would like to get a url using a url pattern with JavaScript (inside a script tag within a django html template file). Unfortunately, if implemented incorrectly, this opens up the possibility of HTML injection, and thus XSS (Cross-Site Scripting) attacks. Names can be short like x, y, z. 0+) uses `django. Its syntax is heavily influenced by Django and Python which is good for anyone already familiar with Python. For a more detailed look at specific areas of the forms API, see The Forms API, Form fields, and Form and field validation. Bu Jan 31, 2011 · 13 No need to use the filter or tag in template. 1 day ago · Django is a powerful web framework known for its "batteries-included" philosophy, which includes robust security features out of the box. In Django, we refer to these files as “static files”. session at any point in your view. I don't think it's recommended to mix Django template variables with javascript though. You can edit it multiple times. Dec 9, 2010 · My script was reading a value and then calling to code in server side but the value on hidden field was not updated yet on ASP. Aug 5, 2025 · Filters Inheritance, etc. If I copy paste the JS right to the HTML without separating - everything works well. This blog post will guide you through four key techniques to integrate Django variables into JavaScript, with practical examples, security considerations, and troubleshooting tips. env file into your environment variables. py function. Sep 17, 2022 · If you’re looking to add that variable to the data being submitted with the form, then you have a couple of options. Nov 24, 2023 · console. You will learn how to work with QuerySets to extract, filter, and sort data from the Feb 3, 2016 · I do not think you should do this since a session variable can contain information the user should not be able to get, so you should always filter which variables are allowed before returning their value. I'll use that value to render it to another html page where another javascript will use it. net hiddenfield control. You will learn how to make HTML Templates and use Django Template Tags to insert data within a HTML document. And 3 & 4 work great in development as I can dynamically create the JS on the fly with Django such as: const apiURL = "{% url 'my_api_url' %}" 1 day ago · - Disabling analytics tracking during testing. base. I tried putting my data in . Django templates are built on the server side, while JavaScript executes on the client side. Feb 18, 2020 · Django templates are often used to pass data to JavaScript code. py' in JavaScript within your templates for dynamic web applications. Jul 15, 2023 · See the json_script tag for the appropriate way for passing data from Django to a JavaScript script. log(myVar); // Access the Django variable Or you can use data attributes in HTML elements to store Django variables and then access these attributes from your external JavaScript. Create a view to display your snippet: Everything else is output as is. Jun 27, 2023 · Django provides a powerful session framework that allows developers to store and retrieve user-specific data across multiple requests. * My answer explains how to set Django Templates and I recommand to set whitenoise following my answer to disable your browser to cache the static files of Django: Jul 1, 2022 · I am trying to pass a JavaScript variable called “facialImageURL” in an HTML file to a Django view function. Jul 13, 2023 · A. You could create a hidden field in the form and set the value of that field to the value you wish to include. Jul 13, 2021 · I don't think this is recommended but you could do something like this if you're using the django template context. Oct 8, 2017 · I want something like this inside django template. The part im stuck on is how do i create a variable name, and then use that name variable elsewhere. This does not mean you can not achieve what you want, but it must be done in the following way. Apr 6, 2021 · After searching for quite a bit this was the best neat-looking solution I found (also the only one): django-js-urls. This is important because there are Jan 29, 2025 · Django is a powerful web framework that simplifies backend development, but when it comes to frontend interactivity, developers often face a dilemma: Should they stick with vanilla JavaScript, which can become tedious for complex interactions? Should they bring in a full-fledged frontend framework like React or Vue. More on makemessages later. class backends. By the end, you’ll know how to seamlessly connect your Django backend to frontend JavaScript logic. However, adding query parameters requires a slightly different approach, where we manually append the parameters after the URL. {% set titles = { 'table': form. Put the script at the bottom of the page and include the buttoncount as a Django Templating Language variable. Dec 4, 2020 · Django templates are actually HTML files, but you can use its built-in templating language and do cool stuff like for-loops just as you would in Python. Learn how to pass objects from Django to JavaScript DOM efficiently. We will feed the opposite relation between words to Python and send it to JavaScript to determine the output based on user's input. Your static Javascript file will have access to all of the global variables that way. Der ursprüngliche Titel der Frage lautete beispielsweise: How to read django variable radio button name in jQuery? Oct 6, 2022 · You want to pass your data from your Django view to JavaScript, in your template. However, Django’s template system automatically escapes HTML characters by default—including quotes in your JSON. Jan 23, 2016 · I'm using a jQuery script inside of a Django template in order to render a Google Map. js in Components folder. That means that template code is always executed before JavaScript (as it is executed by the server before the page is sent to the client). The syntax of the Django template language involves four constructs. from django. Feb 4, 2021 · So I read the django documentation and a django form field id should have the format id_ (form field name), but when I try to reference this id when assigning the form field to a javascript variable it returns null. I am not using a for JavaScript Identifiers Variables are identified with unique names called identifiers. Learn how to add JavaScript files to your Django project with this step-by-step guide on W3Schools. This will load the variables from your . Mar 30, 2020 · how to pass a JavaScript variable to Django views Asked 4 years, 10 months ago Modified 4 years, 10 months ago Viewed 70 times Sep 23, 2017 · passing JavaScript variable to Django Asked 7 years, 4 months ago Modified 7 years, 4 months ago Viewed 564 times. Variables ¶ A variable outputs a value from the context, which is a dict-like object mapping keys to values. Names can be descriptive age, sum, carName. My JavaScript code currently includes a data object with values to be displayed in various HTML widgets based on the user's selection from a menu of Mar 31, 2010 · If I set a session variable in Django, like: request. With JavaScript, a cookie can be created like this: Tags: javascript reactjs django I am making a project using Django and React. Apr 3, 2025 · When you’re working with Django templates and need to send data from your backend (Django view) to frontend (JavaScript), you must do it safely to avoid security risks like Cross-Site Scripting 16 hours ago · When working with Django, a common task is passing data from your backend (Python) to your frontend (JavaScript). src javascript variable in an external script then you would need to declare it between <script> tags like so Passing data from Django/Wagtail to JavaScript code is a common necessity, but often done in a way that leaves your site open to HTML injection and XSS attacks. So, bearing in mind that the blogpages context variable is a Python object, we can say that for each post in it, we want this and this to happen. From my understanding, you would like to update the information on the currently selected ticker in your HTML DOM. Additionally, we will discuss some commonly used session methods to manage session variables effectively, along Nov 7, 2022 · I have a chart that is populated by django template variables. Sep 1, 2021 · How would I use a variable from python (say it is an integer with value 4) to create a variable number of html elements (e. Great, this is the post for you! The example above showed a easy approach on how to create and use variables in a template. Dec 5, 2023 · When your Django application runs, it can access these values through the operating system, ensuring that sensitive data is not hard-coded into the application itself. When a page is requested, Django creates an HttpRequest object that contains metadata about the request. setdefault('DJANGO_SETTINGS_MODULE', 'myapp. Just pip install django-js-urls and add 'js_urls' to your INSTALLED APPS. Let's look at how we can make GET and POST requests with fetch to pass JSON data between the view and the template. What is Django Template Language? The Django Template Language, often referred to as DTL, is Django’s in-built templating engine that allows developers to construct dynamic HTML interfaces 3 days ago · I am running a django app with tables2. What you want to do is not possible. Jun 30, 2020 · Learn how to pass Django template variables to JavaScript functions for seamless integration and dynamic web application development. as long as it is pure text. This can be a challenge, as Django’s template engine operates on the server-side, while Mar 6, 2014 · @lan , Actually i am trying to truncate some text using django template tag , And this processing is based on some javascript variable. Mar 16, 2018 · I have read other similar questions on using Django's variables inside Javascript but as per my understanding they all suggest to do the way I did it, so I am not sure what I am doing wrong. Django provides django. settings') I want to display some values in UI. |length) inside the Template html file and not in the external JavaScript file. Learning by Doing In this tutorial you get a step by step guide on how to install and create a Django project. Modern JavaScript includes the fetch API which gives us a pure JavaScript way to send AJAX requests. Jun 29, 2017 · 1 You should pass the Django { {data}} to a raw JS String in order to prevent JS encoding/decoding problems. @YPCrumble It's declared in the html that is generated by Django. Dec 24, 2018 · Django- How to define django variable in template by javascript variable? Asked 7 years, 5 months ago Modified 6 years, 10 months ago Viewed 114 times Apr 30, 2015 · To use this feature, add an attribute envFile to your launch configuration and specify the absolute path to the file containing the environment variables: For Asp. for example i pass the value ‘product_price’ into a context then display it in a html page using the jinja tag. Update (2024-10-16): add overwrite=True to read_env to make sure that your env variables are up to date. If you want to get the data from server make an ajax request. cookie property. Alternatively, you can use <script> tags in your HTML templates, and assign Django variables to a global Javascript variable. My last name is {{ last_name }}. Nov 23, 2023 · To pass multiple variables from a Django view to an HTML template, you can include additional key-value pairs in the dictionary that you pass to the render function. It is known that there's a DRY way of directing to an URL by using django template tag "url", say {% url "someview" arg1=X %} Here, I want "X" to be the value of a javascript variable, say tmp. Oct 6, 2022 · You want to pass your data from your Django view to JavaScript, in your template. ) The strings you pass to _() or gettext() can take placeholders, specified with Python’s standard named-string interpolation syntax. I fetch the data from Twitter API from Django and I want to show the data in frontend. I am working on a Django project. This results in escaped quotes (e Mar 23, 2022 · What if instead of using HTML template to pass the Django context variable, we inject the variable directly into the external Javascript code ? This is actually possible, the trick here is to to wrap the original JS file in a View, and use that view to render the JS file as a Django template. Built-in template tags and filters ¶ This document describes Django’s built-in template tags and filters. What's the best practice? Right now I write all JS inline (easy to directly use Django variables), but I was wondering what the best way to do it is. We need a template and data. template' logger by modifying the LOGGING setting. 4 boxes) for example? If there is no easy way to execute python in html, is there a way to instead put my python variables into javascript and then somehow use those in the html instead? I am trying to send a string generated from javascript tag in my html page to views. Dec 5, 2024 · If you’re rendering a page and passing a dictionary of variables context, how can you efficiently access these variables in JavaScript? Here are ten effective methods to seamlessly integrate Django variables into JavaScript within your templates, while maintaining security and functionality. Just use format_html () to translate variable to html and Django will automatically turn escape off for you variable. Create a Cookie with JavaScript JavaScript can create, read, and delete cookies with the document. If you’re looking for a more technical perspective on how it works and how to extend it, see The Django template language: for Python programmers. But I’m not sure what you mean by secure. Tags: javascript reactjs django I am making a project using Django and React. This is the variable which parses json data: What's the best practice? Right now I write all JS inline (easy to directly use Django variables), but I was wondering what the best way to do it is. This tag takes either on or off as an argument May 13, 2018 · I have a Python function that returns some value. template. The way you are doing it now probably requires a template somewhat like this <script> var machines = [ // define list with machine positions {% for machine in machines %} // use django templates to interact with the passed context machine. The only solution I've found was to write the value in a cookie with javascript and later read it on ASP. Jul 3, 2020 · Pass in Django Template Variable to JS function Asked 5 years, 4 months ago Modified 5 years, 4 months ago Viewed 1k times from django. Sep 13, 2016 · Discusses how to use Django context variables in JavaScript scripts for web development. conf import settings' and refer to the variable using the settings. py file and put the names of the paths you'd like to use. getElementById (" Feb 20, 2022 · The generally-accepted “safe” method for injecting Django data into a template for access by a JavaScript function is by using the json_script filter. It is about the only way to do it outside of passing them as part of the url and it is the recommended django option. The rules for constructing names (identifiers) are: Names can contain letters, digits, underscores, and dollar signs. position, // I May 23, 2020 · How to compare javascript variable "var1" with django multiple values. RequestContext` implicitly with the `render ()` function. I believed it would be easy, but up to now, I don't overcome to do that. html as a javascript variable. We can use the settings variables anywhere in our project. Apr 9, 2017 · If the javascript code lies in the html template being rendered, you can use it in the normal way {{ context }}. In other words if you wished to use your pic2. SessionBase ¶ Here set environment variables using os. GET Request Django uses request and response objects to pass state through the system. py routes the request to your update_counter method, which updates the database with the value of counter. Today, we are going to add support for environment variables. medium. py. Jan 14, 2015 · Since you are using django's template language you can ONLY do this within your template between <script> tags. replace('temp', arg) (If someone May 27, 2014 · 7 Django templates are build on the server side, at the generation of the page while JavaScript is executed on the client side, when it is needed. Once the page is sent, the view is done - it’s no longer involved. js, even for simple UI interactions? If you’ve ever wished for something Apr 3, 2011 · If you don't mind using jQuery and some AJAX along with it, there is an alternate way to assign html to a javascript variable. Apr 1, 2022 · Therefore, the JavaScript variables cannot be read by your Django template engine. js into our application. And, you want to do it securely, with no risk of accidentally allowing malicious code injection. urls import url from views import update_counter urlpatterns = [ url(r'^update_counter/', update_counter) ] Basically, the ajax in call in the JavaScript sends counter to the server via a POST request. net page. Feb 16, 2021 · How would that even work? JavaScript is evaluated at the clients machine and the template is rendered by Django at the server. Jul 23, 2025 · Django’s url template tag allows us to generate URLs dynamically by inserting path parameters directly. The issue is that Django can't naturally touch these files so certain variables need to be hard coded in JS which, if changed in Django (like URLs or model attributes), causes bugs. If you want to change this clientside (without communicating with the server via ajax or something) you might need to change the href attribute directly. environ. py file in different apps. See also If the built-in fields don’t do the trick, you can try django-localflavor (documentation), which contains assorted pieces of code that are useful for particular countries and cultures. Sep 26, 2018 · I would like to get some help to pass Django variable in HTML template into Javascript variable. Instead of writing the same js function 7x, c Jul 3, 2018 · I would use session variables in order to pass some context through a redirect. Net Core projects, this feature isn't supported natively by vscode but it has recently been added to the omnisharp vscode extension. Any ideas, how could this be achieved? I have a model with few fields, like: class Cat (models. To overcome this, you can place global Javascript variables like the example shown just before you include the static Javascript file. This article explores techniques and best practices for extracting and importing files in Django, helping django I have a javascript variable called "counter", which I want to use to update a counter variable instantiated in models. Therefore Adding environment variables is a necessary step for any truly professional Django project. Variables are surrounded by {{ and }} like this: My first name is {{ first_name }}. Also I connected to my project Google Charts. Whether it's handling user-uploaded files, importing data from external sources, or processing files within your application, Django provides robust tools and libraries to facilitate these tasks. (The caveat with using variables or computed values, as in the previous two examples, is that Django’s translation-string-detecting utility, django-admin makemessages, won’t be able to find these strings. model. Oct 1, 2023 · Keep in mind that Django runs in the server. Jul 12, 2025 · Let's create an opposite finder website using Django. Sep 19, 2009 · I'm using Django and Apache to serve webpages. g. Basic technical overview of Jinja One can render any text or text file using Jinja like HTML, XML, LaTeX, plain text, etc. One such feature is automatic HTML encoding of context variables when rendered in templates. I want to use these variables in javascript file or another template file. Jan 9, 2020 · I am trying to make a blog app using django, and i want to use environment variables to hide sensitive information. images, JavaScript, CSS) ¶ Websites generally need to serve additional files such as images, JavaScript, or CSS. Aug 12, 2020 · hello friend which way is the best way to pass a Django’s views. Introduction In the previous tutorial we have covered the installation of Stimulus. Redirecting to https://wawaziphil. You can read it and write to request. The Django template language ¶ This document explains the language syntax of the Django template system. Names must begin with a letter, a $ sign or an underscore (_). Generally, this is how you can do it: var url = "{% url 'pattern_name' argument %}" And if your argument is a variable like this, I found at least one hack that works: var arg = 'my_argument' var url = "{% url 'pattern_name' temp %}". I read the stack question here (How can I pass my context variables to a javascript file in Django?) to get a few guidance b About this document This document provides an introduction to the basics of web forms and how they are handled in Django. I then set up a field with linkify where i want to zoom to a feature by running a javascript function. py” file) to the frontend JavaScript code. Using Environment Variables in Django Here's a simple guide on how to use environment variables in Django: Firstly, you need to install python-decouple. Oct 12, 2023 · Learn how to seamlessly use Python variables from Django's 'views. I pass the data from django views. py to index. You will learn how to create a project where you can add, read, update or delete data. ---This video is based on the Dec 14, 2022 · Unfortunately Django doesn't see these variables in the JS file if I keep the JS as a separate file. Else, declare a global in the html template and access that global from your separate js file. So I need to pass that value to a js function in html file of Google Charts. py into a javascript file, run the js function then render the return value into my html page. Jul 3, 2020 · Pass in Django Template Variable to JS function Asked 5 years, 4 months ago Modified 5 years, 4 months ago Viewed 1k times Aug 12, 2019 · Then, I wanted to update this index variable (by clicking the X button) so I can display the next elements (2, 3 and 4) of the array without reloading the page. Names are case sensitive (X is different from x We would like to show you a description here but the site won’t allow us. session["name"] = "name" Is there a way I can access it from within a template, or do I have to retrieve it from within a view, and then pass If Statement An if statement evaluates a variable and executes a block of code if the value is true. Apr 30, 2015 · To use this feature, add an attribute envFile to your launch configuration and specify the absolute path to the file containing the environment variables: For Asp. This page describes how you can serve these static files. If I understand you correctly, then you are trying to get the location data stored in every machine into some sort of JavaScript collection. Then I want to present it in the Landing. As a consequence, it is impossible to mix JavaScript and Django code the way you want to. In this blog post, we will explore how to work with sessions in Django and demonstrate a simple example of setting and retrieving a session value. Finally, the update_counter method returns a response, which is In newer versions of Django you can get messages about unset template variables by outputting messages from the 'django. Jun 4, 2020 · How to read django variable radio button name in jQuery? Asked 5 years, 5 months ago Modified 5 years, 5 months ago Viewed 282 times Jul 29, 2016 · Want to completely avoid intermixing Django template language and JavaScript? Pass all of your data over XHR—make AJAX requests to the server after your page loads; write a Django view that returns your needed data as JSON which is easy to parse in JavaScript. Jinja's Template Designer Documentation explains how to create and use templates with special placeholders, macros, and inheritance for dynamic content rendering. 5 days ago · Using sessions in views ¶ When SessionMiddleware is activated, each HttpRequest object – the first argument to any Django view function – will have a session attribute, which is a dictionary-like object. One thing to be careful, is that you can only use Django filter (e. Jul 12