英文:
Why is the content of the test.html file not showing up?
问题
我正在尝试向我的后端发送许多GET请求，但无法理解发生了什么。
viws.py:
from django.http import HttpResponse
from django.views.generic import TemplateView
class HomePageView(TemplateView):
template_name = "pages/home.html"
class AboutPageView(TemplateView):
template_name = "pages/about.html"
class TestPageView(TemplateView):
template_name = "pages/test.html"
def get(self, request, *args, **kwargs):
num = request.GET.get('num')
result = f"test {num} - status: ok"
return HttpResponse(result)
test.html:
{% extends '_base.html' %}
{% load static %}
{% block title %}Test{% endblock title %}
{% block content %}
<!DOCTYPE html>
<html>
<body>
<h2>Test server</h2>
<form id="function_form">
<button type="submit" id="start_btn">Start</button>
</form>
<div id="result"></div>
<script>
document.getElementById("function_form").addEventListener("submit", function (event) {
event.preventDefault();
for (let i = 1; i <= 1000; i++) {
fetch('/test/?num=' + i)
.then(response => response.text())
.then(data => {
document.getElementById("result").innerHTML += data + "<br>";
});
}
});
</script>
</body>
</html>
{% endblock content %}
urls.py:
from django.urls import path
from .views import HomePageView, AboutPageView, TestPageView
urlpatterns = [
path("", HomePageView.as_view(), name="home"),
path("about/", AboutPageView.as_view(), name="about"),
path("test/", TestPageView.as_view(), name="test"),
]
当我访问/test/或者例如/test/?num=2时，我收到的页面只包含"test 2 - status: ok"，与test.html没有任何关联。为什么在/test/上我看不到我预期看到的内容？
英文:
I am trying to send a lot of GET requests to my back-end, but can not understand what happening here
viws.py:
from django.views.generic import TemplateView
class HomePageView(TemplateView):
template_name = "pages/home.html"
class AboutPageView(TemplateView):
template_name = "pages/about.html"
class TestPageView(TemplateView):
template_name = "pages/test.html"
def get(self, request, *args, **kwargs):
num = request.GET.get('num')
result = f"test {num} - status: ok"
return HttpResponse(result)
test.html:
{% load static %}
{% block title %}Test{% endblock title %}
{% block content %}
<!DOCTYPE html>
<html>
<body>
<h2>Test server</h2>
<form id="function_form">
<button type="submit" id="start_btn">Start</button>
</form>
<div id="result"></div>
<script>
document.getElementById("function_form").addEventListener("submit", function (event) {
event.preventDefault();
for (let i = 1; i <= 1000; i++) {
fetch('/test/?num=' + i)
.then(response => response.text())
.then(data => {
document.getElementById("result").innerHTML += data + "<br>";
});
}
});
</script>
</body>
</html>
{% endblock content %}
urls.py:
from django.urls import path
from .views import HomePageView, AboutPageView, TestPageView
urlpatterns = [
path("", HomePageView.as_view(), name="home"),
path("about/", AboutPageView.as_view(), name="about"),
path("test/", TestPageView.as_view(), name="test"),
]
After I path to /test/ or, for example, /test/?num=2 I receive a page which has only "test 2 - status: ok" and nothing common with test.html.
Why on /test there is no content that I expected to see?
答案1
得分: 1
问题是你发送一个 HttpResponse 作为对你的 get 请求的答复。
def get(self, request, *args, **kwargs):
num = request.GET.get('num')
result = f"test {num} - status: ok" # 这里你定义了作为 http 输出看到的字符串
return HttpResponse(result) # 这是你发送的纯响应类型
利用 render 函数！
from django.shortcuts import render
class TestPageView(TemplateView):
template_name = "pages/test.html"
def get(self, request, *args, **kwargs):
return render(self.request, self.template_name, context=self.get_context_data())
render 接受参数：第一个是请求，第二个是 模板，第三个是上下文。上下文在类视图的 get_context_data() 方法中定义。你也可以直接传递一个包含你变量的字典。
仔细考虑一下：
实际上，我上面的解决方案是 TemplateView 的默认方式。你只需摆脱“将响应定义为 HttpResponse('一些文本')”，这样就可以正常工作：
class TestPageView(TemplateView):
template_name = "pages/test.html"
# 删除整个 get 方法
英文:
The problem is that you send a HttpResponse as answer to your get request.
def get(self, request, *args, **kwargs):
num = request.GET.get('num')
result = f"test {num} - status: ok" # here you define the string that you see as http output
return HttpResponse(result) # this is the plain response type that you are sending
Utilize the render function!
from django.shortcuts import render
class TestPageView(TemplateView):
template_name = "pages/test.html"
def get(self, request, *args, **kwargs):
# num = request.GET.get('num')
# result = f"test {num} - status: ok"
return render(self.request, self.template_name, context=self.get_context_data())
render accepts arguments: First the request, second the template, third the context. Context is defined in the method get_context_data() for class based views. You could also just pass a dictionary there with your variables.
On a second thought:
Actually my solution above is the default of the TemplateView. You just have to get rid of "defining the response as HttpResponse("some text")" yourself. So this should work as fine:
class TestPageView(TemplateView):
template_name = "pages/test.html"
# delete entire get method
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