jQuery ValidationEngine函数验证问题

时间:2012-05-31 15:35:52

标签: jquery jquery-validation-engine

这是我的表单(它只包含本练习所需的字段,实际上有20个输入字段):

<form id="reg_form" action="/register_submit" method="post">
  <fieldset>
      <ul class="form-list">
        <li>
          <div style="width:500">
            <label for="Username" class="required">Username (5 characters minimum,<br />Only Letters, Numbers, '~', '%', '.', ':', '-' and '_' allowed)<em>*</em></label><br />
            <div class="input-box">
              <input type="text" name="Username" id="Username" value="{embed:Username}" title="Username" class="validate[required,minSize[5],custom[onlyLetNumSpec]] register_input" />
            </div>
          </div>
        </li>
        <li id="register-customer-password">
          <div style="width:500">
            <label for="Password" class="required">Password (5 characters minimum,<br />Only Letters, Numbers, '~', '%', '.', ':', '-' and '_' allowed)<em>*</em></label><br />
            <div class="input-box">
              <input type="Password" name="Password" id="Password" title="Password" class="validate[required,minSize[5],custom[onlyLetNumSpec]] register_input" />
            </div>
          </div>
          <br />
          <div style="width:500">
            <label for="confirm_password" class="required">Confirm Password<em>*</em></label>
            <div class="input-box">
              <input type="password" name="confirm_password" title="Confirm Password" id="confirm_password" class="validate[required,custom[onlyLetNumSpec],equals[Password],funcCall[checkUserPass]] register_input" />
            </div>
          </div>
          <div class="clear"></div>
         </li>
      </ul>
      <div class="button-set">
        <button class="button button-login" title="Create Account" type="submit">
          <span>
            <span>Create Account</span>
          </span>
        </button>
      </div>
  </fieldset>
</form>

现在,这是在完成并退出confirm_password表单字段后在验证时调用的函数checkUserPass:

function checkUserPass(field, rules, i, options){
  $.ajax({type:'POST',
          url: '/json_api/ParticipantSelectByUser/', 
          data: {"Username":$("#Username").val(), "Password":$("#Password").val()},
          dataType: 'json', 
          success: checkUserPassResult,
          error:function (xhr, ajaxOptions, thrownError){
              alert(xhr.status);
              alert(thrownError);
          } // error
  });
}

function checkUserPassResult(data) {
  if(data.result.ParticipantID > 0) {
    /*--- There is already a user with this combination ---*/
    return options.allrules.checkUserPass.alertText;
  } // if(data.result)
}

知道返回了data.result,因此,已经有一个用户拥有该用户/ pwd组合。

但是,从未显示验证消息。我相信我已经按照正确的方式通过函数调用进行验证。我不能使用ajax验证规则,因为需要将用户名和密码都传递给ajax调用。这里似乎有什么问题?我在这个表单上的所有其他验证工作正常。

以下是上述验证所需的自定义规则:

"onlyLetNumSpec": {
    // Good for database fields
    "regex": /^[0-9a-zA-Z_-~%.:]+$/,
    "alertText": "* Only Letters, Numbers, tilde(~), pct(%), period(.), colon(:), hyphen(-) and underscore(_) allowed"
},
"checkUserPass": {
  "alertText": "* A User with the same Username and/or Password has been detected. Please change one of the entries."
}

编辑说明;我更新了checkUserPass函数,以便成功调用另一个函数。

2 个答案:

答案 0 :(得分:1)

确定。我找到了解决方案!您所要做的就是从主要功能返回而不是回叫。

function checkUserPass(field, rules, i, options){
var ret = "";
$.ajax({type:'POST',
  url: '/json_api/ParticipantSelectByUser/', 
  data: {"Username":$("#Username").val(), "Password":$("#Password").val()},
  dataType: 'json',
  async: false, 
  success: function(response)
  {
     if(data.result.ParticipantID > 0) 
      {
          ret = "There is already a user with this combination";
      } 

  },
  error:function (xhr, ajaxOptions, thrownError){
      alert(xhr.status);
      alert(thrownError);
  } // error
});

 **return ret;**
}

答案 1 :(得分:0)

您正在使用异步ajax,因此无法返回您的返回值。您必须使用数据调用函数。而且您必须在ajax函数之外使用e.preventDefault()(!!!)来阻止提交。

if(data.result) {
    function_to_validate_the_data(data.result);
} // if(data.result)