我有一个Django应用程序，该应用程序接受表单中的 Elasticsearch查询，并生成可下载的报告。较早的迭代效果很好，但是我们决定添加一个组件，该组件每十秒钟检查一次是否创建了报告。我们的最终目标是让它反复检查是否已完成报告（如果未完成，则告诉用户报告仍在处理中），然后添加按钮以下载报告，或者只是使其自动开始下载。
但是，我的应用程序似乎没有调用 form.html 中的 javascript 块。运行此命令时，它会显示{"file_created": False}，直到我手动刷新自己，然后切换为True。我尝试在check_progress中注释掉的代码（这基本上是我在 form.html 中的代码所做的...），但是返回了错误。
如何使他们交流？我想念什么？
views.py
from django.shortcuts import render
from django.contrib.auth.decorators import login_required
from django.http import HttpResponse, JsonResponse, HttpResponseRedirect
import os
import threading
from .forms import QueryForm
from .models import *
@login_required
def get_query(request):
if request.method == 'POST':
form = QueryForm(request.POST)
if form.is_valid():
query = form.cleaned_data["query"]
t = threading.Thread(target=generate_doc, args=(query,))
t.start()
return HttpResponseRedirect('/check_progress/')
else:
return HttpResponse("Your query does not appear to be valid. Please enter a valid query and try again.")
else:
form = QueryForm()
return render(request, 'audit_tool/form.html', {'form': form})
@login_required
def check_progress(request):
"""
Returns whether document generation is complete or in progress
"""
# check if file exists, return response as a JSON
# how to integrate with js code in html to continuously check and refresh
# only shows true when refreshed; how to talk to html??
file = "/report.docx"
data = {
"file_created": os.path.exists(file)
}
# if os.path.exists(file):
# response = generate_doc(query)
# return response
# else:
# return HttpResponseRedirect('/check_progress/')
# this does not work, "10.168.83.100 redirected you too many times.
# Try clearing your cookies.
# ERR_TOO_MANY_REDIRECTS"
return JsonResponse(data)
@login_required
def return_doc(request):
"""
Returns file response upon user request, or error message if something goes wrong
"""
response = generate_doc(query)
return response
form.html
<!-- templates/django_audit/form.html -->
{% extends 'base_login.html' %}
{% block javascript %}
<script>
var checkInterval = setInterval(isFileComplete, 10000); //10000 is 10 seconds
function isFileComplete() {
$.ajax({
url: '/check_progress/',
type: 'GET',
data: {
'file_created': 'True'
},
dataType: 'json',
success: function (data) {
if (data.exists) {
alert("Your file is ready to download!");
clearInterval(checkInterval);
} else {
alert("Your report is still being created, please hold.");
}
}
});
}
</script>
{% endblock %}
{% block title %}Form{% endblock %}
{% block content %}
<p><br></p>
<p><br></p>
<div class="alert alert-primary" role="alert">
<b>Instruction:</b>
{% load crispy_forms_tags %}
<!-- form action="/report/" method="post" onsubmit="this.submit(); this.reset(); return false; -->
<form action="/report/" method="post" onsubmit="this.submit(); this.reset(); return false;">
{% csrf_token %}
{{ form|crispy }}
<input type="submit" value="Submit">
</form>
</div>
{% endblock %}
core / urls.py
from django.contrib import admin
from django.urls import include, path
from django.views.generic.base import TemplateView
from django.conf import settings
from django.conf.urls.static import static
from audit_tool import views
urlpatterns = [
path('admin/', admin.site.urls),
path('accounts/', include('django.contrib.auth.urls')),
path('form/', include('audit_tool.urls')),
path('report/', include('audit_tool.urls')),
path('check_progress/', views.check_progress, name='check_progress'),
path('', TemplateView.as_view(template_name='home.html'), name='home'),
] + static(settings.STATIC_URL, document_root=settings.STAT)
audit_tool / urls.py
from django.urls import path
from . import views
from django.conf import settings
from django.conf.urls.static import static
urlpatterns = [
path('', views.get_query, name='form'),
] + static(settings.STATIC_URL, document_root=settings.STAT)
base_login.html
<!-- templates/base.html -->
<!DOCTYPE html>
<html>
<html lang="en">
{% load static %}
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="{% static 'bootstrap/css/bootstrap.min.css' %}">
<link rel="shortcut icon" href="link/to/company/iconicon.ico" type="image/vnd.microsoft.icon" />
<title>Audit Report Tool</title>
</head>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="#">Dept</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="../">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="../admin">Admin</a>
</li>
</ul>
</div>
</nav>
<div class="container">
<div class="row justify-content-center">
<div class="col-8">
<hr class="mt-0 mb-4">
<img src="{% static "logo.png" %}" alt="Company Logo" align="left"></img>
<img src="{% static "logo.png" %}" alt="Dept Logo" align="right" width="140" height="140"></img>
<h1 align="center"><font size="6"> Audit Report Tool</font></h1>
</div>
</div>
</div>
<body>
<main>
{% block content %}
{% endblock %}
</main>
</body>
</html>
答案 0 :(得分：0)
您的密钥是GatewayProperties，而不是data.file_created行中的data.exists。而if (data.exists) {的发送，则在javascript中消除了-您不需要查询视图中的任何内容，例如文件名，因此您无需填写data: {'file_created': 'True'}。
还有以下内容：
data这意味着file = "/report.docx"
data = {
"file_created": os.path.exists(file)
}
将保存在文件系统的根目录中，这不会发生。使用类似
report.docx此外，您可以提供from django.conf import settings
os.path.join(settings.BASE_DIR, "../upload/", "report.docx")
放置base_login.html的部分。