Flask WTForms:如何将表单值重新带回Python? [英] Flask WTForms: how do I get a form value back into Python?

问题描述

我想做的是在5个不同的字段上获取用户输入，然后让用户输入的内容可在python程序的其余部分中使用.到目前为止，我的代码如下:

What I'm trying to do is get user input on 5 different fields, then have what the user entered available to use in the rest of my program in python. The code I have so far, looks like this:

class ArtistsForm(Form):
    artist1 = StringField('Artist 1', validators=[DataRequired()])
    artist2 = StringField('Artist 2', validators=[DataRequired()])
    artist3 = StringField('Artist 3', validators=[DataRequired()])
    artist4 = StringField('Artist 4', validators=[DataRequired()])
    artist5 = StringField('Artist 5', validators=[DataRequired()])


@app.route('/', methods=('GET', 'POST'))
def home():
    form = ArtistsForm(csrf_enabled=False)
    if form.validate_on_submit():
        return redirect('/results')
    return render_template('home.html', form=form)

@app.route('/results', methods=('GET', 'POST'))
def results():
    artist1 = request.form['artist1']
    artist2 = request.form['artist2']
    artist3 = request.form['artist3']
    artist4 = request.form['artist4']
    artist5 = request.form['artist5']

    return render_template('results.html')

有什么想法吗?(我知道csrf_enabled = False是不好的，我现在就来进行测试.)我希望在此函数下面的值进行一些计算(无网络方面).

Any ideas? (i know csrf_enabled=False is bad, I'm just doing it to test for now.) I want the values for a function below this, to do some computations (no web aspect).

我更新了上面的代码.我能够获得这些值.现在，我只需要将它们传递给下面的函数即可.

I updated my code above. I was able to get the values in. Now I just need to pass them to a function below.

推荐答案

您需要填充某种数据结构，例如变量，列表或字典，然后将其传递给python函数.然后需要将python函数的返回/结果作为上下文参数传递，以呈现在结果模板中.

You need to populate some sort of data structure like a variable ,list, or a dictionary and then pass that to a python function. The return/result of the python function would then need to be passed as a context parameter to be rendered in your result template.

示例:

@app.route('/', methods=('GET', 'POST'))
def home():
    form = ArtistsForm(request.POST, csrf_enabled=False)
    if form.validate_on_submit():
        art1 = form.artist1.data
        art2 = form.artist2.data
        result = computate_uncertainty(art1, art2)
        return render_template('results.html', result=result)
    return render_template('home.html', form=form)

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