“500 internal error”是什么？

Question

我在写一个小应用，这是代码片段。

Javascript:

<script type="text/javascript">
function filldata()
{
    var sample = document.getElementById("filter-select").value;
    jQuery.support.cors = true;
    $.post("/test",{"filter_type":sample},function(data,status)
    {
    alert(data);
    });
}
</script>

Flask Code:

@app.route('/test', methods=['POST'])
def test(str):
    return str

它给了我这个错误：500 internal error。而当我在调试模式下运行它时，它提示：

test() takes exactly one argument(zero given)

Answer 1

You need to parse argument from Flask's request object

from flask import request

@app.route('/test',methods=['POST'])
def test():
    return request.form.get('filter_type')

See quickstart for more info