Php Codeigniter“；分组人；查询号为´；不行吗？

我一直在试着这样做，但似乎哪里也去不了

问题是，数据不会以组合框的形式显示在视图中，它会显示此错误

遇到PHP错误严重性：注意消息：未定义属性：stdClass:：$Campus Filename:views/energy\u search\u Campus.PHP行号：28“>c\u name

所以不知道问题应该在哪里…在模型、视图、控制器甚至数据库中。提前感谢

型号：

function campus_finder()
{
    $this->db->group_by('campus');
    $this->db->order_by('faculty', 'asc');
    $query = $this->db->get('cpanel_energy');
    if($query->num_rows()>0) {
        foreach($query->result() as $row) {
            $services[$row->id] = $row;
        }
        return $services;
    }
}

<div class="finder">
    <div>
        <label>Campus</label>
    </div>
    <select
            id="campus"
            name="campus"
            class="form-control"
        >
            <option value="">----</option>
        <?php foreach($catalogue as $item): ?>
            <option value="<?php echo $item->Campus; ?>"
            <?php if($campus) echo ($item->campus==$campus)? 'selected' : ''; ?>
            ><?php echo $item->campus; ?></option>
        <?php endforeach; ?>
        </select>
</div>

function campus_search()
{
    $submit = $this->input->post('send');
    $campus = $this->input->post('campus');
    $year = $this->input->post('year');
    if($submit=='goback')
    {
        redirect("energy/catalogue/");
    }
    else
    {
        $data['catalogue']  = $this->model_energy_consumption->campus_finder();
        $data['voucher']    = $this->model_energy_consumption->results_campus();
        $data['services']   = $this->modelo_energy_consumption->services_catalogue_campus();
        $data['campus'] = $campus;
        $data['year'] = $year;

MAINTENANCE_JOB_ITEMS
|----|---------|---------|--------|
| id | account | faculty | campus |
|----|---------|---------|--------|
  1    898946    f_name    c_name

查看：

function campus_finder()
{
    $this->db->group_by('campus');
    $this->db->order_by('faculty', 'asc');
    $query = $this->db->get('cpanel_energy');
    if($query->num_rows()>0) {
        foreach($query->result() as $row) {
            $services[$row->id] = $row;
        }
        return $services;
    }
}

<div class="finder">
    <div>
        <label>Campus</label>
    </div>
    <select
            id="campus"
            name="campus"
            class="form-control"
        >
            <option value="">----</option>
        <?php foreach($catalogue as $item): ?>
            <option value="<?php echo $item->Campus; ?>"
            <?php if($campus) echo ($item->campus==$campus)? 'selected' : ''; ?>
            ><?php echo $item->campus; ?></option>
        <?php endforeach; ?>
        </select>
</div>

function campus_search()
{
    $submit = $this->input->post('send');
    $campus = $this->input->post('campus');
    $year = $this->input->post('year');
    if($submit=='goback')
    {
        redirect("energy/catalogue/");
    }
    else
    {
        $data['catalogue']  = $this->model_energy_consumption->campus_finder();
        $data['voucher']    = $this->model_energy_consumption->results_campus();
        $data['services']   = $this->modelo_energy_consumption->services_catalogue_campus();
        $data['campus'] = $campus;
        $data['year'] = $year;

MAINTENANCE_JOB_ITEMS
|----|---------|---------|--------|
| id | account | faculty | campus |
|----|---------|---------|--------|
  1    898946    f_name    c_name

DB:

function campus_finder()
{
    $this->db->group_by('campus');
    $this->db->order_by('faculty', 'asc');
    $query = $this->db->get('cpanel_energy');
    if($query->num_rows()>0) {
        foreach($query->result() as $row) {
            $services[$row->id] = $row;
        }
        return $services;
    }
}

<div class="finder">
    <div>
        <label>Campus</label>
    </div>
    <select
            id="campus"
            name="campus"
            class="form-control"
        >
            <option value="">----</option>
        <?php foreach($catalogue as $item): ?>
            <option value="<?php echo $item->Campus; ?>"
            <?php if($campus) echo ($item->campus==$campus)? 'selected' : ''; ?>
            ><?php echo $item->campus; ?></option>
        <?php endforeach; ?>
        </select>
</div>

function campus_search()
{
    $submit = $this->input->post('send');
    $campus = $this->input->post('campus');
    $year = $this->input->post('year');
    if($submit=='goback')
    {
        redirect("energy/catalogue/");
    }
    else
    {
        $data['catalogue']  = $this->model_energy_consumption->campus_finder();
        $data['voucher']    = $this->model_energy_consumption->results_campus();
        $data['services']   = $this->modelo_energy_consumption->services_catalogue_campus();
        $data['campus'] = $campus;
        $data['year'] = $year;

MAINTENANCE_JOB_ITEMS
|----|---------|---------|--------|
| id | account | faculty | campus |
|----|---------|---------|--------|
  1    898946    f_name    c_name

---

在模型中返回$services，但值保存在$servicios变量中

在模型中返回$services，但值保存在$servicios变量中

首先调用选择函数选择一些记录，然后将其分组
像这样：

$this->db->select('user_id, first_name,last_name');

---

首先调用选择功能选择一些记录，然后将它们分组
像这样：

$this->db->select('user_id, first_name,last_name');

---

Traduzindo o erro.o erro esta no teu view na pagina

energy_search_campus.php

na linha 28.Ta falando que a propriedade

c_name

do objeto

$campus

na esta definifiido.provalmento一个sua sua query esta restar esta restornando um um um um um um um um um，e vc esta tentandando pegar a propriedade de um objeto que now fou definifiido.Ohh nevermind…问题解决了。该死的，我应该多注意代码…减号/Mayus:（.Traduzindo o erro.o erro esta no teu view na pagina

energy_search\u campus.php

na linha 28.Ta falando que a propriedade

c_name

do objeto

$campus

na esta definifiido.provalmento a sua query esta restar esta restarnando um um um um um um um.vc esta tentando tentando pegar a propriedade de de um objeto que que que vo que vo vazio.Ohh nevermind…问题解决了。该死的，我应该多注意代码…减号/Mayus:（.错误：错误：