如何将多个选定的值添加到PHP CodeIgniter的单个列中?

时间:2019-06-23 17:43:16

标签: php codeigniter jquery-select2

我正在一个项目中,我需要使用Php CodeIgniter将多个选择的值添加到单个列中。 这是实际的问题陈述: 我有一个INT列 total_persons 来存储总人数(即5),还有一个VARCHAR列 person_names 可以存储这5个人的姓名。

要从下拉列表中选择多个用户,我正在使用Select2库。 但是当我提交数据时,弹出以下错误消息

“人名”字段为必填项。 当然是因为我在表单上设置了验证规则,如下所示:

$ this-> form_validation-> set_rules('person_names','Person Names','required');

我不明白为什么选择了5个用户名时,它没有任何价值。

如果我添加单个用户的ID(将列保持为INT)而不是多个所选值,则它可以正常工作并在DB中发送数据。但是,当我尝试存储多个用户名时,会引发我上面粘贴的错误。

这是我的Controller中的 Expense.php 代码

    function add()
    {   
        $this->load->library('form_validation');

        $this->form_validation->set_rules('expense_type','Expense Type','required');
        $this->form_validation->set_rules('person_names','Person Names','required');
        $this->form_validation->set_rules('total_persons','Total Persons','required');
        $this->form_validation->set_rules('expense_amount','Expense Amount','required');
        $this->form_validation->set_rules('expense_details','Expense Details','required');
        $this->form_validation->set_rules('date_added','Date Added','required');

        if($this->form_validation->run())     
        {   
            $params = array(
                'expense_type' => $this->input->post('expense_type'),
                'total_persons' => $this->input->post('total_persons'),
                'person_names' => $this->input->post('person_names'),
                'expense_amount' => $this->input->post('expense_amount'),
                'expense_details' => $this->input->post('expense_details'),
                'date_added' => $this->input->post('date_added'),
                'update_date' => $this->input->post('update_date'),
            );

            print_r($params);
            exit();

            $expense_id = $this->Expense_model->add_expense($params);
            redirect('expense/index');
        }
        else
        {
            $this->load->model('Expense_type_model');
            $data['all_expense_type'] = $this->Expense_type_model->get_all_expense_type();

            $this->load->model('User_model');
            $data['all_users'] = $this->User_model->get_all_users();

            $data['_view'] = 'expense/add';
            $this->load->view('layouts/main',$data);
        }
    }  

Expense_Model.php

    function add_expense($params)
    {
        $this->db->insert('expense',$params);
        return $this->db->insert_id();
    }

view.php

    <div class="col-md-6">
        <label for="person_names" class="control-label"><span class="text-danger">*</span>Person Names</label>
        <div class="form-group">
            <select name="person_names[]" class="form-control multiselect" multiple="multiple">
                <option value="">select user</option>
                    <?php 
                        foreach($all_users as $user)
                        {
                            $selected = ($user['user_name'] == $this->input->post('person_names')) ? ' selected="selected"' : "";

                            echo '<option value="'.$user['user_name'].'" '.$selected.'>'.$user['user_name'].'</option>';

                        } 
                    ?>
           </select>

            <span class="text-danger"><?php echo form_error('person_names');?></span>
        </div>
    </div>

如果我不遗漏某些关键点,则代码应在user_name字段中添加五个名称,如下所示? [“ user1”,“ user2”,“ user3”,“ user4”,“ user5”] (这是我的假设,如果我猜错了,表示歉意)

有人可以帮我弄清楚我在哪里犯错吗?

非常感谢。

2 个答案:

答案 0 :(得分:2)

CodeIgniter表单验证类支持use of arrays as field names。为了使用它,您需要在验证规则中包括[]

$this->form_validation->set_rules('person_names[]','Person Names','required');

还有表单错误:

form_error('person_names[]')

修改

为了将数组保存在单个列中,您可以先json_encode,以获取json格式的字符串,然后可以使用json_decode将数据作为数组检索:

$params = array(
    'expense_type' => $this->input->post('expense_type'),
    'total_persons' => $this->input->post('total_persons'),
    'person_names' => json_encode($this->input->post('person_names')),
    'expense_amount' => $this->input->post('expense_amount'),
    'expense_details' => $this->input->post('expense_details'),
    'date_added' => $this->input->post('date_added'),
    'update_date' => $this->input->post('update_date'),
);

答案 1 :(得分:0)

通过这种方式,您可以通过用空格分隔多个ID将其保存在单列中。

通过将id放入数组中并使用jquery可以将其分解并显示在多个选择字段中,从而获取保存的id。

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<select class="form-control" id="alertrecepients" name="alertrecepients" multiple size="10">
 <?php
    if(!empty($users)){
        foreach ($users as $cl){
 ?>
   <option value="<?php echo $cl->userId ?>"
<?php 
   $x = 0;
   $paramArray31=explode(' ',$alertrecepients);
   $limit= count($paramArray31);
   while($x <= $limit-1) {
      if ($paramArray31[$x] == $cl->userId) {
        echo "selected";
      }
      $x++;
   }
?>>
<?php echo $cl->name ?></option>
<?php }} ?>
</select>

<script>
    $( "select[name='alertrecepients']" )
    .change(function() {
    var str = "";
    $( "select[name='alertrecepients'] option:selected" ).each(function() {
    str += $( this ).val() + " ";
    });
    $( "#selectedrecepients" ).val( str );
    })
    .trigger( "change" );
</script>

<input type="hidden" value="<?php echo $alertrecepients; ?>" name="selectedrecepients" id="selectedrecepients" />

I am not familiar with snippet, so i am posting answer like this.