Pass URL parameters to Python

Question

I have the following code in one of my templates.

<html>
<body>
    <script>
        var val1 = 10;
        var val2 = 20;
    </script>
    <a href="/generate/">Generate</a>
</body>
</html>

I wish to use the values val1 and val2 in the generate function in the views.py file. It would be something like this.

def generate(request):
    # do something with val1 and val2

I am lost as to how I can pass these values to the function. What is the best practice for this, should I try to retrieve the information through URL parameters? Or perhaps I should just remove the Javascript and do everything in Python directly in the generate() function?

Thank you for your help!

ssut · Accepted Answer · 2014-07-07 09:22:25Z

3

You need to apply HTTP methods such as GET or POST.

use this code in view template (example - index.html):

<html>
<body>
    <form method="post" action="/generate">
        {% csrf_token %}
        <input type="number" name="val1" value="10">
        <input type="number" name="val2" value="20">
        <input type="submit" value="generate">
    </form>
</body>
</html>

and use this code in views.py:

def index(request):
    return render_to_response('index.html', RequestContext(request))

def generate(request):
    val1 = request.POST.get('val1', 0)
    val2 = request.POST.get('val2', 0)
    sum = val1 + val2

    return HttpResponse(str(sum))

This link is helpful for you: https://docs.djangoproject.com/en/dev/topics/forms/

answered Jul 7, 2014 at 9:22

ssut

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Comments

Husain Basrawala · Accepted Answer · 2014-07-07 09:31:36Z

2

Pass the parameters using GET:

<html>
    <body>
        <a href="/generate/?val1=10&val2=20">Generate</a>
    </body>
</html>

Now you can access them in view using request attribute:

def generate(request):
    if request.method == 'GET':
        val1 = request.GET.get('val1')
        val2 = request.GET.get('val2')
        #futher code

https://docs.djangoproject.com/en/dev/ref/request-response/#

answered Jul 7, 2014 at 9:31

Husain Basrawala

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1 Comment

zakiay Over a year ago

I used this as it seems simpler and cleaner than using a form. Thank you!

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