在我使用python创建的flask服务器的html代码下面给出。我在这里 仅使用checkboxSelectCombo并在Flask UI中选中复选框后，我想在单击任何Flask按钮时在python中打印这些值。 如何在python中获取并打印该值？ 如果有人知道答案，请帮帮我。
谢谢
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>OPTIMIZATION</title>
<title></title>
<!-- Ignite UI Required Combined CSS Files -->
<link href="http://cdn-na.infragistics.com/igniteui/2018.1/latest/css/themes/infragistics/infragistics.theme.css" rel="stylesheet" />
<link href="http://cdn-na.infragistics.com/igniteui/2018.1/latest/css/structure/infragistics.css" rel="stylesheet" />
<script src="http://ajax.aspnetcdn.com/ajax/modernizr/modernizr-2.8.3.js"></script>
<script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="http://code.jquery.com/ui/1.11.1/jquery-ui.min.js"></script>
<!-- Ignite UI Required Combined JavaScript Files -->
<script src="http://cdn-na.infragistics.com/igniteui/2018.1/latest/js/infragistics.core.js"></script>
<script src="http://cdn-na.infragistics.com/igniteui/2018.1/latest/js/infragistics.lob.js"></script>
</head>
<style>
table {
font-family: arial, sans-serif;
border-collapse: collapse;
background-color: #dddddd;
width: 100%;
}
td, th {
border: 1px solid #dddddd;
text-align: left;
padding: 1px;
}
</style>
<body bgcolor="#a9d284">
<img src="/static/images/logo.gif" alt="Related Book 1" width="300" height="80" align="right">
<script src="/static/scripts.js" charset="utf-8"></script>
<h1>PORTFOLIO OPTIMIZATION</h1>
<style>
.combo-label {margin-bottom:.5em;}
</style>
<form method="POST" action="">
<h4 class="combo-label">SELECT THE STOCK OPTIONS</h4>
<div id="checkboxSelectCombo"></div>
<br><br>
<h4>SELECT THE INPUT DATE</h4>
<input type="date" name="date1" placeholder="Start date">
<input type="date" name="date2" placeholder="End date">
<br><br>
<h4>ENTER CONSTRAINTS CRITERIA</h4>
<table>
<tr>
<th> </th>
<th>Cheap</th>
<th>Moderate</th>
<th>Expensive</th>
<th>PUT</th>
<th>CALL</th>
<th>Not Recommended</th>
<th>Highly Liquid</th>
<th>Moderately Liquid</th>
<th>Less Liquid</th>
<th>MPO</th>
<th>PO</th>
<th>LPO</th>
</tr>
<tr>
<td>Group_Min</td>
<td class="td"><input type="text" name="min1"/></td>
<td class="td"><input type="text" name="min2" /></td>
<td class="td"><input type="text" name="min3"/></td>
<td class="td"><input type="text" name="min4"/></td>
<td class="td"><input type="text" name="min5"/></td>
<td class="td"><input type="text" name="min6"/></td>
<td class="td"><input type="text" name="min7"/></td>
<td class="td"><input type="text" name="min8"/></td>
<td class="td"><input type="text" name="min9"/></td>
<td class="td"><input type="text" name="min10"/></td>
<td class="td"><input type="text" name="min11"/></td>
<td class="td"><input type="text" name="min12"/></td>
</tr>
<tr>
<td>Group_Max</td>
<td class="td"><input type="text" name="max1"/></td>
<td class="td"><input type="text" name="max2"/></td>
<td class="td"><input type="text" name="max3"/></td>
<td class="td"><input type="text" name="max4"/></td>
<td class="td"><input type="text" name="max5"/></td>
<td class="td"><input type="text" name="max6"/></td>
<td class="td"><input type="text" name="max7"/></td>
<td class="td"><input type="text" name="max8"/></td>
<td class="td"><input type="text" name="max9"/></td>
<td class="td"><input type="text" name="max10"/></td>
<td class="td"><input type="text" name="max11"/></td>
<td class="td"><input type="text" name="max12"/></td>
</tr>
</table>
<br><br>
<input type="submit" value="GET RESULTS">
</form>
<script>
var colors = [
{ Name: "FP FP Equity" },
{ Name: "SAN FP Equity" },
{ Name: "NOK1V FH Equity" },
{ Name: "SAN SQ Equity" },
{ Name: "EOA GY Equity" },
{ Name: "SIE GY Equity" },
{ Name: "ENI IM Equity" },
{ Name: "UC IM Equity" },
{ Name: "INGA NA Equity" },
{ Name: "TEF SQ Equity" },
{ Name: "BNP FP Equity" },
{ Name: "BBVA SQ Equity" },
{ Name: "ALV GY Equity" }
];
$(function () {
$("#singleSelectCombo").igCombo({
width: 300,
dataSource: colors,
textKey: "Name",
valueKey: "Name",
dropDownOnFocus: true,
dropDownOrientation: "bottom"
});
$("#multiSelectCombo").igCombo({
width: 300,
dataSource: colors,
textKey: "Name",
valueKey: "Name",
multiSelection: {
enabled: true
},
dropDownOrientation: "bottom"
});
$("#checkboxSelectCombo").igCombo({
width: 300,
dataSource: colors,
textKey: "Name",
valueKey: "Name",
multiSelection: {
enabled: true,
showCheckboxes: true
},
dropDownOrientation: "bottom"
});
});
</script>
</body>
</html>
<!doctype html>
<title>Simple tables</title>
<link rel=stylesheet type=text/css href="{{ url_for('static', filename='style.css') }}">
<div class=page>
<h2>OPTIMIZED VALUES</h2>
{% for table in tables %}
<h3>{{titles[loop.index]}}</h3>
{{ table|safe }}
{% endfor %}
</div>
Python后端代码
from flask import Flask, render_template, request
from optimization_excel.app import rough_bkend as r1
app = Flask(__name__)
@app.route('/opt')
def index():
return render_template('rough_portopt.html')
@app.route('/opt', methods=['POST'])
def opt():
val = request.form.getlist('checkboxSelectCombo')
print(val)
res1, res2, res3 = r1.get_res1()
return render_template('rough_portopt.html', tables=[res1.to_html(), res2.to_html()],
titles=['na', 'Test Results', 'Constraint values'])
if __name__ == "__main__":
app.run(debug=True)
答案 0 :(得分：0)
所以我将import pdb; pdb.set_trace()放在您的print(val)代码之前并找到了
-> print(val)
(Pdb) p request.form
ImmutableMultiDict([('date1', ''), ('date2', ''), ('min1', ''), ('min2', ''),
('min3', ''), ('min4', ''), ('min5', ''), ('min6', ''), ('min7', ''), ('min8', ''),
('min9', ''), ('min10', ''), ('min11', ''), ('min12', ''), ('max1', ''), ('max2', ''),
('max3', ''), ('max4', ''), ('max5', ''),('max6', ''), ('max7', ''), ('max8', ''),
('max9', ''), ('max10', ''), ('max11', ''), ('max12', '')])
因此，我们看到checkboxSelectCombo不属于表单。右键单击下拉框，然后选择“检查”，我检查生成的HTML并找到
<input type="hidden" class="ui-igcombo-hidden-field" value="SAN FP Equity">
啊，这个元素没有名字。您的问题似乎出在您的JavaScript中，而不是烧瓶中。