Django模板向views.py传递value值返回None问题求助

Let's break down the issue and fix it step by step:

The Root Problem #

Your current code adds a value attribute to the <a> tag, but browsers don't treat this attribute as a URL query parameter. The value attribute isn't a standard attribute for <a> elements, so when the user clicks the link, the browser sends a request to the URL generated by {% url 'accounts:customerhomepage' %} without including the value=1 parameter. That's why your view gets None when trying to fetch it via request.GET.get('value').

The Fix: Add the Parameter to the URL #

To pass the value=1 as a GET parameter, you need to append it directly to the URL in your template. Here's how to modify your HTML:

<div class="submitbutton">
  <a href="{% url 'accounts:customerhomepage' %}?value=1" target="_blank">
    <button> View Demo </button>
  </a>
</div>

If You Need a Dynamic Value #

If the value isn't hardcoded (e.g., it comes from a template variable), you can interpolate it like this:

<div class="submitbutton">
  <a href="{% url 'accounts:customerhomepage' %}?value={{ your_dynamic_variable }}" target="_blank">
    <button> View Demo </button>
  </a>
</div>

Verify the Fix #

After making this change, when the user clicks the link, the URL will look something like http://your-domain.com/accounts/customerhomepage/?value=1. Your view code:

demo = request.GET.get('value')
print(demo)

will now correctly print '1' instead of None.

内容的提问来源于stack exchange，提问作者Jason Howard