獲取笨錯誤 - 一個PHP錯誤遇到消息：試圖讓非對象的屬性

Question

控制器功能代碼：

$surveydata = $this->getsurveydatabasedonId($SurveyId); 
$this->load->view('editsurvey', array('surveydata' => $surveydata)); 

視圖代碼：

<h1 class="page-header">Edit Survey</h1> 
       <?php 
       $att = array('id' => 'editsurvey_form', 'role' => 'ajax-form'); 
       echo form_open('welcome/editsurvey', $att); 
       ?> 
       <div class="span5 offset1" id="form_div"> 
        <?php echo validation_errors('<div class="alert alert-danger reg_error">', '</div>'); ?> 
        <div class="form-group control-group warning"> 
         <input name="SurveyId" style="display:none" type="text" class="form-control" data-validation-required-message="Please enter a Survey Id" id="SurveyId" required placeholder="Please enter the Survey Id" value="<?php echo set_value('SurveyId', $surveydata->SurveyId); ?>"> 
         <label for="SurveyTitle">Survey Title</label> 
         <input name="SurveyTitle" type="text" class="form-control" data-validation-required-message="Please enter a Survey Title" id="SurveyTitle" required placeholder="Please enter the Survey Title" value="<?php echo set_value('SurveyTitle', $surveydata->SurveyTitle); ?>"> 
         <p class="help-block"></p> 
        </div> 
        <div class="form-group control-group warning"> 
         <label for="SurveyIntroduction">Survey introduction</label> 
         <textarea name="SurveyIntro" type="text" class="form-control" id="SurveyIntro" placeholder="Enter the Survey Introduction"><?php echo set_value('SurveyIntro', $surveydata->SurveyIntro); ?></textarea> 
        </div> 

        <button type="submit" class="btn btn-large btn-warning">Edit Survey</button> 
       </div> 
       </form> 

我得到出現以下錯誤：

A PHP Error was encountered 

Severity: Notice 

Message: Trying to get property of non-object 

Filename: views/editsurvey.php 

Line Number: 11 

我正在通過陣列，但它無法正常工作有人可以幫我嗎？

Answer 1

請確保，

您的$surveydata數據。

如果通過

$resultSet->result() OR $resultSet->row()獲取的結果，然後用$surveydata->SurveyTitle

如果你是通過在獲取結果：

$resultSet->result_array() OR $resultSet->row_array()，然後用$surveydata['SurveyTitle]

而且，請務必檢查計數$surveydata

Answer 2

應該$surveydata[0]['SurveyId']，不$surveydata->SurveyId

同爲SurveyTitle 應該$surveydata[0]['SurveyTitle']，不$surveydata->SurveyTitle