当我使用表单操作提交表单数据时,我能够回复消息.
查看表单:
@app.route('/register') def register(): return render_template('register.html')
Register.HTML
<form action="{{ url_for('processRegister') }}" method=post> <dl> <dt>email: <dd><input type="text" name="email" id="email"> <div id="emailBlank" class="error"><font color="red">email cannot be blank</font></div> <div id="emailFormat" class="error"><font color="red">invalid email format</font></div> <dt>Password: <dd><input type="password" name="password" id="password"> <div id="pwBlank" class="error"><font color="red">password cannot be blank</font></div> <dt>Enter password again: <dd><input type="password" name="password2" id="password2"> <div id="pw2Blank" class="error"><font color="red">verify password field cannot be blank</font></div> <dd><input type="submit" value="submit" id="submit"><br><br> </dl> </form> <a href="{{ url_for('verifyEmailForm') }}">send another verification email</a> {% endblock %}
现在我正在使用ajax我的flash消息不再出现.
$(document).ready(function(){ (code removed for clarity) if (error == false) { $.ajax({ type: "POST",url: "/processRegister",data: { varEmail: email,varPassword: pw} });//ajax call }//end if });//submit });//load validate.js });//doc rdy
我对处理表单数据的看法:
@app.route('/processRegister',methods=['POST']) def processRegister(): if request.method == 'POST': email = request.form['varEmail'] flash("message -----> " + email) return render_template('register.html')
{% with messages = get_flashed_messages() %} {% if messages %} <ul class=flashes> {% for message in messages %} <li>{{ message }}</li> {% endfor %} </ul> {% endif %} {% endwith %}
解决方法
闪烁的消息是
stored as part of the session,并在服务器端渲染模板时检索.客户端JavaScript无法访问会话cookie.即使它是,它也不容易在JavaScript中解码.即使您可以对其进行解码,也会假设会话是cookie而不是存储在服务器或其他内容上.
如果要呈现一些消息以响应AJAX请求,您应该在响应中发送这些消息,并在用JavaScript编写的处理程序中呈现它们.使用重定向时提供闪烁消息是为了方便,但由于您使用的是AJAX,因此可以跳过此中间步骤并直接返回消息.