在阅读了许多类似的声音问题和相关的Flask文档之后,我似乎无法弄清楚在提交表单时会产生以下错误:
400错误请求
浏览器(或代理)发送了此服务器无法理解的请求.
虽然表单总是正确显示,但当我提交与这些函数中的任何一个相关联的HTML表单时,会发生错误请求:
@app.route('/app/business', methods=['GET', 'POST'])
def apply_business():
if request.method == 'POST':
new_account = Business(name=request.form['name_field'], email=request.form['email_field'], account_type="business",
q1=request.form['q1_field'], q2=request.form['q2_field'], q3=request.form['q3_field'], q4=request.form['q4_field'],
q5=request.form['q5_field'], q6=request.form['q6_field'], q7=request.form['q7_field'],
account_status="pending", time=datetime.datetime.utcnow())
db.session.add(new_account)
db.session.commit()
session['name'] = request.form['name_field']
return redirect(url_for('success'))
return render_template('application.html', accounttype="business")
@app.route('/app/student', methods=['GET', 'POST'])
def apply_student():
if request.method == 'POST':
new_account = Student(name=request.form['name_field'], email=request.form['email_field'], account_type="student",
q1=request.form['q1_field'], q2=request.form['q2_field'], q3=request.form['q3_field'], q4=request.form['q4_field'],
q5=request.form['q5_field'], q6=request.form['q6_field'], q7=request.form['q7_field'], q8=request.form['q8_field'],
q9=request.form['q9_field'], q10=request.form['q10_field'],
account_status="pending", time=datetime.datetime.utcnow())
db.session.add(new_account)
db.session.commit()
session['name'] = request.form['name_field']
return redirect(url_for('success'))
return render_template('application.html', accounttype="student")
HTML的相关部分是
<html>
<head>
<title>apply</title>
</head>
<body>
{% …有两个形式<input type="submit">.但是当我发送它时,第二次提交会导致错误.
布局:
<form action="{{ url_for('index') }}" method="post">
<input type="submit" name="add" value="Like">
<input type="submit" name="remove" value="Dislike">
</form>
main.py:
...
if request.method == 'POST':
if request.form['add']:
return redirect(url_for('index'))
elif request.form['remove']:
return redirect(url_for('index'))
...
首先提交(添加)效果很好,但第二次(删除)...:
错误请求浏览器(或代理)发送了此服务器无法理解的请求.
我该如何解决这个错误？
UPD:
这很简单:request.form返回ImmutableMultiDict:
...
if 'Like' in request.form.values():
...
elif 'Dislike' in request.form.values():
...