我是codeigniter和php的新手,我现在正遇到这个错误,我不知道我哪里出错了。我应该在我的foreach上添加一些东西吗?我上次遇到的是一个未定义的属性,由于我的模型中的拼写错误的单词现在是一个stdClass而被解决了?这次没有拼错的单词。有人可以用这个问题来启发我吗?
错误:
遇到PHP错误
严重性:注意
消息:未定义的属性:stdClass :: $ blockcode
文件名:views / v_schedule.php
行号:10
视图:v_schedule.php
<?php foreach ($query as $row){ ?>
<?php echo $row->blockcode;?> <br>
<?php echo $row->subjectcode;?> <br>
<?php echo $row->daystart;?> <br>
<?php echo $row->dayend;?> <br>
<?php echo $row->stime;?> <br>
<?php echo $row->sday;?> <br>
<?php echo $row->instructorname;?> <br>
<?php echo $row->instuctorlastname;?> <br>
<?php echo $row->roomcode;?> <br>
<?php echo $row->building;?> <br>
<?php } ?>
controller:c_test.php
function getSchedule() {
$data['query'] = $this->m_test->result_getSchedule();
$this->load->view('v_schedule',$data);
}
model:m_test.php
function result_getSchedule()
{
$this->db->select('grades.studentid', 'grades.blockcode', 'subjectblocking.subjectcode','subjectblocking.daystart','subjectblocking.dayend', 'subjectblocking.stime','subjectblocking.sday','instructorinfo.firstname', 'instructorinfo.lastname', 'subjectblocking.roomcode','room.building');
$this->db->from('grades');
$this->db->join('subjectblocking', 'grades.blockcode=subjectblocking.blockcode');
$this->db->join('instructorinfo', 'subjectblocking.instructorid=instructorinfo.instructorid');
$this->db->join('room', 'subjectblocking.roomcode= room.roomcode');
$this->db->distinct();
$this->db->where('studentid', '2013-F0218');
$query=$this->db->get();
return $query->result();
}
答案 0 :(得分:3)
你犯了一个错误
$this->db->select('grades.studentid', 'grades.blockcode', 'subjectblocking.subjectcode','subjectblocking.daystart','subjectblocking.dayend', 'subjectblocking.stime','subjectblocking.sday','instructorinfo.firstname', 'instructorinfo.lastname', 'subjectblocking.roomcode','room.building');
//this is is not right way codeigniter select.
//it only selects studentid
//blockcode is not seleted that's why you got that error
这是正确的方法
$this->db->select('grades.studentid , grades.blockcode , subjectblocking.subjectcode , subjectblocking.daystart , subjectblocking.dayend , subjectblocking.stime , subjectblocking.sday , instructorinfo.firstname , instructorinfo.lastname , subjectblocking.roomcode , room.building');
希望这能解决你的问题
答案 1 :(得分:0)
成绩和主题块表中有两个块码列。
您应该在m_test.php中更改您的sql:
$this->db->select('grades.studentid', 'grades.blockcode as block_code', 'subjectblocking.subjectcode','subjectblocking.daystart','subjectblocking.dayend', 'subjectblocking.stime','subjectblocking.sday','instructorinfo.firstname', 'instructorinfo.lastname', 'subjectblocking.roomcode','room.building');
你应该在v_schedule.php中将$ row-&gt; blockcode变量更改为$ row-&gt; block_code
希望它有所帮助。
答案 2 :(得分:0)
首先我也使用了上面的代码,我得到了同样的错误。
<LinearLayout android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="@drawable/background"
android:padding="10dp" >
<TextView style="@style/TextView_port"
android:id="@+id/text"
android:text="Text" />
<RelativeLayout style="@style/LinearLayout"
android:layout_below="@id/text"
android:layout_margin="10dp"
android:gravity="right" >
<TextView style="@style/TextView_port"
android:text="3:59pm"
android:textColor="#73B661" />
</RelativeLayout>
</LinearLayout>
但改变了
$this->db->select('grades.studentid', 'grades.blockcode as block_code', 'subjectblocking.subjectcode','subjectblocking.daystart','subjectblocking.dayend', 'subjectblocking.stime','subjectblocking.sday','instructorinfo.firstname', 'instructorinfo.lastname', 'subjectblocking.roomcode','room.building');
我解决了错误。
如果我们可以将$this->db->select('grades.studentid, grades.blockcode as block_code, subjectblocking.subjectcode,subjectblocking.daystart,subjectblocking.dayend, subjectblocking.stime,subjectblocking.sday,instructorinfo.firstname, instructorinfo.lastname, subjectblocking.roomcode,room.building');
的单个名称设为grades.studentid
,那么我们可以直接调用:
studentID