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用户输入他们的地址和年龄。当查找按钮被击中时,它将显示输入。但是,对于输入无效的情况,我想添加一条错误消息。检查用户输入是否有效
如何检查输入是否无效并给出错误消息?我希望我的错误消息与输入值相同的页面上。代码无法正常工作。
<div class = "Information">
<h2>Your Infomation</h2>
<form action="" method=post>
if (error){
<p id="error"><strong></strong>{{error}}
}
<div id = "address">
<label>address</label>
<input type=text name=address value="{{request.form.address}}">
</div>
<div id = "age">
<label>age</label>
<input type=text name=age value="{{request.form.age}}">
</div>
<div class = "Input">
<a href="/results">
<button type = "button" class = "btn btn-primary" value="find" >Find!</button>
</a>
</div>
</form>
</div>
@app.route('/results',methods=['GET','POST'])
def result():
error = None;
if request.method == 'POST':
if request.form['age'] != '14':
error='You did not enter proper values'
return render_template('template.html',error=error)
由于它的工作原理 – FamilyMaze
你能告诉我为什么如果request.method ==“POST”:当我年龄键入14不会被调用? – FamilyMaze