添加默认值后Flask wtf表单未验证

Question

添加form.field.default = value和form.process()后，Flask Wtf Form在提交时不再验证

例如，我的表单类

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，表单将使用选定的值呈现，即default. However, my form no longer submits, best I can tell is that it adds a选定的keyword to an optionVal 1`。我对html进行了完整的差异处理，这就是我所找到的全部内容。

Answer 1

看起来您需要处理"GET"请求中的表单。

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

然后一切都很好。