Render_to_string和response.content.decode（）不匹配 [英] Render_to_string and response.content.decode() not matching
问题描述
我正在撰写我的第一个 Django 应用程序：
I'm writing my first Django app by following along with this book:
在本书中，有一个测试是验证是否按原样返回html。这是测试：
In the book there is a test that is verifying that the html is being returned as it is supposed to. Here is the test:
def test_home_page_returns_correct_html(self):
request = HttpRequest()
response = home_page(request)
expected_html = render_to_string('home.html')
print(expected_html)
print(response.content.decode())
self.assertEqual(response.content.decode(), expected_html)
我的测试失败了 assertEqual 测试，因为我使用 Django模板语言在我的HTML中添加了一个 csrf令牌。这是我的HTML页面的样子：
My test is failing on the assertEqual test because I have added a csrf token in my HTML using the Django Template Language. Here is what my HTML page looks like:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>To-Do lists</title>
</head>
<body>
<h1>Your To-Do list</h1>
<form method="POST">
<input name="item_text" id="id_new_item" placeholder="Enter a to-do item"/>
{% csrf_token %}
</form>
<table id="id_list_table">
<tr><td>{{ new_item_list }}</td></tr>
</table>
</body>
</html>
我的断言由于 render_to_string 方法不包括令牌。这是我的两个打印语句包含在我的测试打印出来：
My assert is failing due to the render_to_string method not including the token. Here is what my two print statements included in my test print out:
F<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>To-Do lists</title>
</head>
<body>
<h1>Your To-Do list</h1>
<form method="POST">
<input name="item_text" id="id_new_item" placeholder="Enter a to-do item"/>
</form>
<table id="id_list_table">
<tr><td></td></tr>
</table>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>To-Do lists</title>
</head>
<body>
<h1>Your To-Do list</h1>
<form method="POST">
<input name="item_text" id="id_new_item" placeholder="Enter a to-do item"/>
<input type='hidden' name='csrfmiddlewaretoken' value='VAiGvXZLHCjxWEWdjhgQRBwBSnMVoIWR' />
</form>
<table id="id_list_table">
<tr><td></td></tr>
</table>
</body>
</html>
F.
他在书中没有这个问题（他正在使用 1.8 ），所以我想知道方法行为是否改变了，或者我将如何写这个测试通过。
He doesn't have this problem in the book (he's using 1.8), so I was wondering if the method behavior has changed, or how I would write this test to pass.
推荐答案
请求参数被添加到 render_to_string 。您可以尝试将测试中的行更改为：
The request argument was added to render_to_string in Django 1.8. You could try changing the line in your test to:
expected_html = render_to_string('home.html', request=request)
只需要在Django 1.9+中进行此更改，测试将在Django 1.8中通过。
It's only required to make this change in Django 1.9+, the test passes without the request in Django 1.8.
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