Python WTForms TextArea字段长度验证
若输入少于10个字符,则不会显示长度验证消息,而是重定向到主页。当表单字段为空时,如何显示错误消息 表单类:Python WTForms TextArea字段长度验证,python,flask,wtforms,Python,Flask,Wtforms,若输入少于10个字符,则不会显示长度验证消息,而是重定向到主页。当表单字段为空时,如何显示错误消息 表单类: class __MyForm(FlaskForm): name = StringField(FIELDS[0], default="", validators=[DataRequired()]) mail = EmailField(FIELDS[1], default="", validators=[DataRequired()])
class __MyForm(FlaskForm):
name = StringField(FIELDS[0], default="", validators=[DataRequired()])
mail = EmailField(FIELDS[1], default="", validators=[DataRequired()])
message = TextAreaField(FIELDS[2], default="", validators=[DataRequired(), Length(min=10, max=250, message="At least 15 characters, maximum 250")])
<form method="POST">
{{ form.csrf_token }}
<div class="row">
<div class='form-inputs col-12 col-lg-6'>{{ form.name() }}</div>
<div class='form-inputs col-12 col-lg-6'>{{ form.mail() }}</div>
<p class="col-12 col-lg-11">{{ form.message() }}</p>
<button type="submit" class='btn btn-link col-12 col-lg-1' title="Wyślij">
<i class="fas fa-paper-plane fa-4x mb-3"></i>
</button>
</div>
</form>
HTML:
class __MyForm(FlaskForm):
name = StringField(FIELDS[0], default="", validators=[DataRequired()])
mail = EmailField(FIELDS[1], default="", validators=[DataRequired()])
message = TextAreaField(FIELDS[2], default="", validators=[DataRequired(), Length(min=10, max=250, message="At least 15 characters, maximum 250")])
<form method="POST">
{{ form.csrf_token }}
<div class="row">
<div class='form-inputs col-12 col-lg-6'>{{ form.name() }}</div>
<div class='form-inputs col-12 col-lg-6'>{{ form.mail() }}</div>
<p class="col-12 col-lg-11">{{ form.message() }}</p>
<button type="submit" class='btn btn-link col-12 col-lg-1' title="Wyślij">
<i class="fas fa-paper-plane fa-4x mb-3"></i>
</button>
</div>
</form>
{{form.csrf_token}
{{form.name()}}
{{form.mail()}}
{{form.message()}
我想用我的长度验证消息显示如下错误:
您需要修改html以显示存储在“字段”中的错误。错误并更正查看路径,以便在验证错误时不重定向到主页面
你应该看看:我不是这个意思。这是一个解决方案,它的默认html表单验证。我必须在js上做: