我有一个多步骤表单，其中包含许多输入字段，包括多个文件输入，其中一些是使用JavaScript动态生成的。在表单的一部分中，用户可以上传多个文件。我可以将表单数据插入数据库，但不能上传用户上传的多个文档文件。我正在使用AJAX来上传表单数据和文件。这是我的控制器代码，
<?php
defined('BASEPATH') or exit('No direct script access allowed');
class Employee extends MY_Controller
{
public function index()
{
$data['title'] = 'employees';
$this->view('employees/view_employee_view', $data);
}
public function save()
{
$req = $this->input->post();
// Some other code here
// First upload the profile picture
if (!empty($_FILES['emp_photo']) AND $_FILES["emp_photo"]["error"] == 0) {
// Upload employee photo
$emp_photo_data = $this->upload_file(EMP_PHOTOS_FOLDER, 'emp_photo');
if (array_key_exists('error', $emp_photo_data)) {
$this->response(['success'=>false, 'msg' => '<b>File upload failed!Try again</b>', 'data'=> ''], 500);
exit();
}
else {
$employee['emp_photo'] = $emp_photo_data['file_name'];
}
}
$this->db->trans_start();
$emp_id = $this->Employee_model->save($employee);
// Save edu details of employee
$this->add_edu_details($emp_id);
// Upload employee documents
$doc_details = $this->upload_emp_docs($emp_id); //<-- Here is the problem
if (is_string($doc_details)) {
// it's an error
$this->response(['success' => false, 'msg' => '<b>Employee documents upload failed!</b>', 'data' => $doc_details]);
$this->db->trans_rollback();
exit();
}
else{
if ($doc_details === FALSE) {
// Error occured - rollback
$this->response(['success' => false, 'msg' => '<b>Employee documents upload failed!</b>', 'data' => '']);
$this->db->trans_rollback();
exit();
}
}
}
private function upload_emp_docs($emp_id)
{
$counts = $this->input->post('emp_docs_count');
$req = $this->input->post();
$data = [];
for ($i = 1; $i <= $counts; $i++) {
if (!empty($_FILES['emp_doc_' . $i])) {
$res = $this->upload_file(EMP_DOCS_FOLDER, 'emp_doc_' . $i, 'pdf');
$done = move_uploaded_file($_FILES["emp_doc_" . $i]["tmp_name"], EMP_PHOTOS_FOLDER . md5(time()) . '.jpg');
if (array_key_exists('error', $res)) {
return $res['error']; // return error string
}
else {
$data[$i] = ["emp_id" => $emp_id, 'file_name' => $res["file_name"], 'doc_type'=> $req["emp_doc_type_{$i}"] ];
}
}
}
if (!empty($data)) {
$done = $this->Emp_doc_model->save($data);
return !empty($done) ? TRUE : FALSE;
}
else {
return FALSE;
}
}
}
这是 MY_Controller.php 中的代码，实际上执行上传任务
public function upload_file($dir, $input, $allowed_types = 'jpeg|jpg|png')
{
$config['upload_path'] = $dir;
$config['allowed_types'] = !empty($allowed_types) ? $allowed_types : 'jpeg|jpg|png';
$config['max_size'] = 0;
$config['max_width'] = 0;
$config['max_height'] = 0;
$config['file_name'] = md5(time() . rand(1, 1000));
$this->load->library('upload', $config);
if (!$this->upload->do_upload($input)) {
return array('error' => $this->upload->display_errors());
} else {
$data = $this->upload->data();
// If it is image then resize it to reduce the image file size
if ($data['is_image']) {
$this->resize_image($data['full_path']);
}
return $data;
}
}
在一个区域中，用户可以选择个人资料图片，我可以使用上面的代码上传该文件，但是当我尝试上传多个文件时，我无法找到为什么它不起作用。
这是该部分的HTML代码
<div class="col upload-area">
<div class="input-group">
<a class="btn bg-grey btn-block" id="add-file-group">ADD FILE</a>
</div>
<input type="hidden" id="emp_docs_count" name="emp_docs_count" value="1">
<div class="row clearfix file-upload-group">
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-6">
<div class="form-group">
<div class="form-line">
<input name="emp_doc_1" type="file" class="form-control">
</div>
</div>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-6">
<div class="form-group">
<div class="form-line">
<select name="emp_doc_type_1" id="emp_doc_type_1" class="form-control show-tick selectpicker" title="Choose one of the following...">
<option value="<?= OFFER_LETTER ?>"><?= OFFER_LETTER ?></option>
<option value="<?= APPOINT_LETTER ?>"><?= APPOINT_LETTER ?></option>
<option value="<?= CONF_LETTER ?>"><?= CONF_LETTER ?></option>
<option value="<?= APP_LETTER_1 ?>"><?= APP_LETTER_1 ?></option>
<option value="<?= APP_LETTER_2 ?>"><?= APP_LETTER_2 ?></option>
<option value="<?= REL_LETTER ?>"><?= REL_LETTER ?></option>
<option value="<?= EXP_TER_LETTER ?>"><?= EXP_TER_LETTER ?></option>
</select>
</div>
</div>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12">
<!-- <button type="button" class="btn btn-primary btn-sm waves-effect"><i class="material-icons">cloud_upload</i></button> -->
<button type="button" class="btn btn-danger btn-sm waves-effect remove-me"><i class="material-icons">delete_forever</i></button>
</div>
</div>
这是用于动态生成输入标签的JS代码
$("#add-file-group").click(function() {
// Dynamically generate the id for upload-group elements
const count = $(".upload-area").find(".file-upload-group").length + 1;
const newID = "upload-area-id-" + count;
const fileUploadGroup = `<div class="row clearfix file-upload-group">
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-6">
<div class="form-group">
<div class="form-line">
<input type="file" class="form-control" id="file_${count}" name="emp_doc_${count}">
</div>
</div>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-6">
<div class="form-group">
<div class="form-line">
<select name="emp_doc_type_${count}" id="emp_doc_type_${count}" data-size="2" class="form-control show-tick selectpicker" title="Choose one of the following..." tabindex="-98"><option class="bs-title-option" value="">Choose one of the following...</option>
<option value="OFFER LETTER">OFFER LETTER</option>
<option value="APPOINTEMENT LETTER">APPOINTEMENT LETTER</option>
<option value="CONFIRMATION LETTER">CONFIRMATION LETTER</option>
<option value="APPRAISAL LETTER 1">APPRAISAL LETTER 1</option>
<option value="APPRAISAL LETTER 2">APPRAISAL LETTER 2</option>
<option value="RELIVING LETTER">RELIVING LETTER</option>
<option value="EXPERIENCE / TERMINATION LETTER">EXPERIENCE / TERMINATION LETTER</option>
</select>
</div>
</div>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12">
<button type="button" class="btn btn-primary btn-sm waves-effect"><i class="material-icons">cloud_upload</i></button>
<button type="button" class="btn btn-danger btn-sm waves-effect remove-me"><i class="material-icons">delete_forever</i></button>
</div>
</div>`;
$(".upload-area").append(fileUploadGroup);
// Increament the doc counter of hidden field
$('#emp_docs_count').val(count);
// Refresh the selectpicker to work on this generated element
$(".selectpicker").selectpicker("refresh");
});
答案 0 :(得分：0)
确保您的表单输入的属性enctype为multipart/form-data
并且您输入的文件名称为name[]（要创建所选的每个文件都在数组中），并具有属性multiple。
答案 1 :(得分：0)
我终于解决了它，我每次调用upload_file()方法时都只需要初始化上传库，我只添加了一行就可以开始工作了，
public function upload_file($dir, $input, $allowed_types = 'jpeg|jpg|png')
{
$config['upload_path'] = $dir;
$config['allowed_types'] = !empty($allowed_types) ? $allowed_types : 'jpeg|jpg|png';
$config['max_size'] = 0;
$config['max_width'] = 0;
$config['max_height'] = 0;
$config['file_name'] = md5(time() . rand(1, 1000));
$this->load->library('upload');
$this->upload->initialize($config); //<-- this line solved it
if (!$this->upload->do_upload($input)) {
return array('error' => $this->upload->display_errors());
} else {
$data = $this->upload->data();
// If it is image then resize it to reduce the image file size
if ($data['is_image']) {
$this->resize_image($data['full_path']);
}
return $data;
}
}