Python 如何在 Flask 中获取表单数据？
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How to get form data in Flask?
提问by Grey Li
I need get data from form.
我需要从表单中获取数据。
I use JavaScript to create form:
我使用 JavaScript 创建表单：
<script>
function checkAuth() {
var user = ADAL.getCachedUser();
if (user) {
var form = $('<form style="position: absolute; width: 0; height: 0; opacity: 0; display: none; visibility: hidden;" method="POST" action= "{{ url_for("general.microsoft") }}">');
form.append('<input type="hidden" name="token" value="' + ADAL.getCachedToken(ADAL.config.clientId) + '">');
form.append('<input type="hidden" name="json" value="' + encodeURIComponent(JSON.stringify(user)) + '">');
$("body").append(form);
form.submit();
}
}
</script>
then I need to get data from the input field which name="json".
然后我需要从输入字段中获取数据name="json"。
Here is my view function:
这是我的视图函数：
@general.route("/microsoft/", methods=["GET", "POST"])
@csrf.exempt
def microsoft():
form = cgi.FieldStorage()
name = form['json'].value
return name
But I get an error:
但我收到一个错误：
builtins.KeyError KeyError: 'json'
builtins.KeyError KeyError: 'json'
Help me get data from form.
帮我从表单中获取数据。
回答by Grey Li
Get form data from Flask's request object:
从 Flask 的请求对象中获取表单数据：
from flask import Flask, request
app = Flask(__name__)
@app.route('/', methods=['GET', 'POST'])
def index():
data = request.form['input_name']
...
You can also set a default value to avoid 400 error, like this:
您还可以设置默认值以避免 400 错误，如下所示：
from flask import Flask, request
app = Flask(__name__)
@app.route('/', methods=['GET', 'POST'])
def index():
default_name = '0'
data = request.form.get('input_name', default_name)
...
