[英]Unable to list the another table data using codeigniter
I'm able to display the list of groups fetched from the table. 我可以显示从表中提取的组的列表。 But unable to display the list of centers.
但无法显示中心列表。
I'm unable to find where I have made an error. 我找不到错误的地方。
When I uncomment the $data['allcenters']
, I just get an empty page. 当取消注释
$data['allcenters']
,我只会得到一个空白页。 But when I remove the line, the page displays fine but without the list of centers. 但是,当我删除该行时,页面显示正常,但没有中心列表。
The table name of groups is user_groups. 组的表名是user_groups。 The table name of centers is institute_data.
中心的表名称是Institute_data。
The code is as below: 代码如下:
Controller: (user_data.php) 控制器:(user_data.php)
function add_new(){
$logged_in=$this->session->userdata('logged_in');
if($logged_in['su']!="1"){
exit('Permission denied');
return;
}
$data['title']="Add User";
//get the list of the groups
$data['allgroups'] = $this->group_model->get_allgroups();
//get the list of all centers
$data['allcenters'] = $this->centers_model->get_allcenters();
//Page is displayed when the above code is commented.
//On inserting the above line, the page is just blank
$this->load->view($this->session->userdata('web_view').'/header',$data);
$this->load->view($this->session->userdata('web_view').'/add_user',$data);
$this->load->view($this->session->userdata('web_view').'/footer',$data);
}
Model (centers_model.php): 模型(centers_model.php):
function get_allcenters(){
$query = $this->db->get("institute_data");
$result = $query->result_array();
return $result;
}
Model (group_model.php): 模型(group_model.php):
function get_allgroups(){
$query = $this->db->get("user_group");
$result = $query->result_array();
return $result;
}
View (add_user.php) 查看(add_user.php)
<?php print_r($allcenters); ?>
<div class="form-group">
<label>Center </label>
<select class="form-control" name="centers">
<?php foreach($allcenters as $key => $center){ ?>
<option value="<?php echo $center['su_institute_id']; ?>"><?php echo $center['organization_name']; ?></option>
<?php } ?>
</select>
</div>
<?php print_r($allgroups); ?>
<div class="form-group">
<label>Group </label>
<select class="form-control" name="user_group">
<?php foreach($allgroups as $key => $group){ ?>
<option value="<?php echo $group['gid']; ?>"><?php echo $group['group_name']; ?></option>
<?php } ?>
</select>
</div>
You get a blank page because there's a 500 internal error (most likely DB related issues). 您会得到一个空白页,因为存在500个内部错误(很可能是与数据库有关的问题)。 Check your php logs for errors, make sure that the table actually exists.
检查您的php日志中是否有错误,请确保该表确实存在。
PS: You put the wrong filenames for each code. PS:您为每个代码输入了错误的文件名。 the model filenames look switched.
模型文件名看起来切换了。
Thanks, I have solved the problem. 谢谢,我已经解决了问题。
I have not loaded the model in the __construct() function. 我尚未在__construct()函数中加载模型。
Added $this->load->model('centers_model','',TRUE);
添加了
$this->load->model('centers_model','',TRUE);
and the code works fine. 和代码工作正常。
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