添加默认值后 Flask wtf-form 不验证？

Question

添加 form.field.default = value 和 form.process()

后，Flask Wtf Form 不再在提交时验证

比如我的表格class,

class SelectFoo(FlaskForm):
    var1 = SelectField('Var 1')
    var2 = SelectField('Var 2')
    var3 = SelectField('Var 3')

我的路线，

@route.route('/foo-input', methods=['GET', 'POST'])
def foo_route():
    form = SelectFoo()
    df = pd.Dataframe({'var_1': np.random.rand(10), 'var_2': np.random.rand(10), 'var_3': np.random.rand(10)})
    choices = [(s, s.replace('_', ' ').title()) for s in df.columns]
    fuzzy_lookup = compare_lists(target, cols)
    print(fuzzy_lookup) # for this test use {i:i for i in df.columns}
    print(choices)

    form.val1.choices = choices
    form.val2.choices = choices
    form.val2.choices = choices

    if form.validate_on_submit():
        dict_ = {
            'var 1': form.var1.data,
            'var 2': form.var2.data,
            'var 3': form.var2.data,
        }
        return jsonify(dict_)
    return render_template('footemplate.html', form=form)

如果我加上，

@route.route('/foo-input', methods=['GET', 'POST'])
def foo_route():
    ...
    form.coupon.choices = choices

    form.val1.default = fuzzy_lookup['val1']
    form.val2.default = fuzzy_lookup['val2']
    form.val2.default = fuzzy_lookup['val2']
    form.process()

    ...
        return jsonify(dict_)
    return render_template('footemplate.html', form=form)

当我在 html 表单中添加默认选项时，表单将使用 default. However, my form no longer submits, best I can tell is that it adds aselectedkeyword to an optionVal 1` 的选定值呈现。我对 html 进行了完整的比较，这就是我找到的全部内容。

Answer 1

您似乎需要处理 'GET' 请求中的表单。

if request.method == 'GET':
    form.process()

然后一切正常。

添加默认值后 Flask wtf-form 不验证？

Flask wtf-form not validating after I add default values?

flask

wtforms

flask-wtforms