wtforms 只返回 None [英] wtforms returns only None

问题描述

我有以下 HTML、CSS 和 JS 代码.但是，当我从右上角使用搜索并按回车键时.Flask 只会得到无"和搜索中输入的内容.

I have the following HTML, CSS and JS code. However, when I use the search from the top right side and press enter. Flask only get "None" and what was typed in search.

这是搜索的路线:

@app.route("/quick_search/", methods=("GET", "POST"))
@app.route("/quick_search/<property_id>")
def quick_search(property_id=None):
    form = QuickSearch()
    print "???", form.propert_name.data

和这个表单类:

from flask.ext.wtf import Form
from wtforms import SelectField, StringField, IntegerField, SelectMultipleField

class QuickSearch(Form):
    propert_name = StringField()

为什么我只从 form.propert_name.data 得到 None?

Why I only get None from form.propert_name.data?

推荐答案

您在 WTForms 实例和 Flask 视图中为您的字段命名 propert_name.但在 HTML 中，它被称为 quick_search.

You name your field propert_name in the WTForms instance and in the Flask view. But in the HTML it is called quick_search.

您还可以在 input 标签中两次使用属性 type.你说 type="text" 然后你将 type 重新定义为 submit 稍后.这不应该导致问题，但值得照顾......

You also use the attribute type twice in the inputtag. You say type="text" and then you redefine type to submit later on. This shouldn't cause the problem, but worth it to take care…

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