所以我对多对多关系有疑问。
目前,我有surat
和surat_user
表。
如何将数据插入surat
并同时将来自select2
多个表单的多个值插入surat_user
表中,以及如何获取数据以便更新它。
更新: 我解决了插入问题,请参见下面的答案
但是现在我不知道如何更新这些值。 例如
surat_user
id_surat | id_user
1 | 1
1 | 2
如果我要删除其中{id_surat = 1`的surat_user
中的一个,如何更新id_user
(在控制器和模型中)
此刻,我不知道如何将多个值提取到select2表单编辑中,所以这里是mu不完整的代码:
控制器
public function edit_sm($id_surat){
$this->load->view('template/header');
$this->load->view('template/sidebar');
$where = array('id_surat' => $id_surat);
//$data=array('id_status'=> $this->M_sm->get_option());
$data['surat'] = $this->M_sm->edit_sm($where,'surat')->result();
$this->load->view('v_edit_surat',$data);
$this->load->view('template/footer');
}
public function edit_sm_proses() {
$data = array(
'id_surat'=>$this->input->post('id_surat'),
'no_surat'=>$this->input->post('no_surat'),
'id_status'=>$this->input->post('id_status'),
'id_user'=>$this->input->post('id_user')
);
$where = array(
'id_surat' => $id_surat
);
$this->M_sm->edit_sm_proses($where,$data,'surat');
redirect('SuratMasuk');
}
型号:
public function edit_sm($where,$table){
$this->db->join('status_surat', 'status_surat.id_status = surat.id_status');
return $this->db->get_where($table,$where);
}
public function edit_sm_proses($where,$data,$table){
$this->db->where($where);
$this->db->update($table,$data);
}
查看
<section class="content">
<div class="row">
<div class="col-xs-12">
<div class="box box-solid box-primary"">
<div class="box-header with-border">
<h3 class="box-title">Default Box Example</h3>
</div>
<!-- /.box-header -->
<div class="box-body">
<?php foreach ($surat as $key) { ?>
<form method="post" action="<?php echo base_url()."SuratMasuk/edit_sm_proses" ?>" enctype="multipart/form-data" />
<input type="hidden" name="id_surat" value="<?=$key->id_surat?>">
<div class="form-group">
<label class="control-label col-lg-2">No Surat</label>
<div class="col-lg-5">
<input type="text" name="no_surat" class="form-control no_surat" placeholder="Masukkan Nomor Surat" value="<?=$key->no_surat?>">
<span class="help-block"></span>
</div>
</div>
<br>
<br>
<div class="form-body">
<div class="form-group">
<label class="control-label col-lg-2">Status</label>
<div class="col-lg-5">
<select class="form-control select2 id_status" name="id_status" style="width: 100%;">
<option value="<?=$key->id_status;?>" selected="<?=$key->id_status;?>"><?php echo $key->status;?></option>
<?php foreach ($id_status as $row) { ?>
<option value="<?php echo $row->id_status; ?>"> <?php echo $row->status; ?></option>
<?php } ?>
</select>
<span class="help-block"></span>
</div>
</div>
</div>
<br>
<br>
<div class="form-body">
<div class="form-group">
<label class="control-label col-lg-2">Disposisi</label>
<div class="col-lg-5">
<select class="form-control select2 id_user" name="id_user[]" style="width: 100%;">
<option value="<?=$key->id_user;?>" selected="<?=$key->id_user;?>"><?php echo $key->nama;?></option>
<?php foreach ($id_user as $row) { ?>
<option value="<?php echo $row->id_user; ?>"> <?php echo $row->nama; ?></option>
<?php } ?>
</select>
<span class="help-block"></span>
</div>
</div>
</div>
</div>
<!-- /.box-body -->
<div class="box-footer">
<button class="btn btn-danger" type="reset" value="reset">Reset</button>
<button class="btn btn-info">Update</button><br>
<a href="<?php echo base_url(); ?>SuratMasuk/">Kembali</a>
</form>
<?php
}
?>
</div>
<!-- box-footer -->
</div>
<!-- /.box -->
</div>
<!-- /.col -->
</div>
<!-- /.row -->
</section>
<!-- /.content -->
当前结果: result from codes above
答案 0 :(得分:0)
class SuratMasuk extends CI_Controller {
public function add_sm_proses(){
$data = array(
'no_surat'=>$this->input->post('no_surat'),
'id_status'=>$this->input->post('id_status'),
);
从像这样的表格中选择 MAX ID
$id_surat = $this->db->query('SELECT MAX(surat.id_surat) AS maxid FROM surat')->row()->maxid;
更新:-
$id_surat
将提供表格中的 MAX ID 。不要用于下一个记录。
首先,将其递增1,然后使用它
$id_surat = $id_surat + 1;
$id_user = $this->input->post('id_user') ? $this->input->post('id_user') : array();
首先,检查$id_user
是否具有值,否则foreach循环将产生e错误
if(count($id_user) > 0){
foreach ($id_user as $u){
$data_values = array('id_surat' => $id_surat, 'id_user' => $u);
$this->db->insert('surat_user', $data_values);
}
}
$insert = $this->M_sm->add_sm($data);
$insert
并不总是返回1
。因此,仅检查值是否存在
if($insert){
redirect('SuratMasuk');
} else {
echo "<h2>Gagal menambahkan data</h2>";
}
}
}
答案 1 :(得分:0)
设法自己解决问题。
我将我的控制器更改为此:
public function add_sm_proses(){
$data = array(
'no_surat'=>$this->input->post('no_surat'),
'id_status'=>$this->input->post('id_status')
);
$insert = $this->M_sm->trans_surat_user($data);
if($insert=1){
redirect('SuratMasuk');
} else {
echo "<h2>Gagal menambahkan data</h2>";
}
}
将我的模型更改为此:
public function trans_surat_user($data){
$this->db->trans_start();
$this->db->insert('surat', $data);
$id_surat = $this->db->query('SELECT surat.id_surat FROM surat ORDER BY id_surat DESC limit 1');
foreach ($id_surat->result() as $row) {
$id_surat_result = $row->id_surat;
}
$id_user = $_POST['id_user'];
foreach ($id_user as $data2) {
array_push($id_user, $data2);
$this->db->query('INSERT INTO surat_user (id_surat,id_user) VALUES ('.$id_surat_result.','.$data2.')');
}
$this->db->trans_complete();
}
答案 2 :(得分:0)
首先,显示数据库中的所有记录,并为每个记录添加一个按钮以编辑记录。
注意:-请勿在循环内使用<form>
<a class="btn btn-warning btn-sm" href="<?= base_url('SuratMasuk/edit_sm/'.$row->id_surat)?>"><i class="fa fa-pencil-square-o" aria-hidden="true"></i>Edit</a>
用于编辑的控制器
我只是在这里添加后端代码
其中和表是数据库的保留字。最好不要使用它或以其他方式使用。
public function edit_sm($id_surat){
$condition_array = array('id_surat' => $id_surat);
$data['surat'] = $this->M_sm->edit_sm($condition_array ,'surat');
}
编辑模型
获取记录进行编辑
此功能仅从数据库获取一条记录,因此请使用row()
public function edit_sm($condition_array ,$record_in){
$this->db->join('status_surat', 'status_surat.id_status = surat.id_status');
return $this->db->get_where($record_in, $condition_array )->row();
}
现在,Form for将显示其中填充的数据。
从Controller获取更新的数据
public function edit_sm_proses() {
$data = array(
'id_surat'=> $this->input->post('id_surat'),
'no_surat'=>$this->input->post('no_surat'),
'id_status'=>$this->input->post('id_status'),
'id_user'=>$this->input->post('id_user')
);
$condition_array = array(
'id_surat' => $this->input->post('id_surat')
);
$this->M_sm->edit_sm_proses($condition_array, $data, 'surat');
redirect('SuratMasuk');
}
更新模型中的数据
public function edit_sm_proses($condition_array, $data, $record_in){
$this->db->where($condition_array);
return $this->db->update($record_in, $data);
}