Question

我是Codeigniter的新手。我浏览了许多上传的帖子。我能够从数据库中更新图像链接，并且成功选择了新选择的图像，但是我无法同时删除（取消链接）旧图像。

这是我的控制器：

public function admin_profile_image()
{
    if($this->session->userdata('login_answer') != null){

        if('ADMIN'==$this->session->userdata('forredirect'))
        {
            $config['upload_path']          = './assets/uploads/profile_uploads/';
            $config['allowed_types']        = 'jpeg|jpg|png';
            $config['max_size']             = 100;
            $config['max_width']            = 1024;
            $config['max_height']           = 768;

           $this->upload->initialize($config);                              


            if($this->upload->do_upload('updateprofileimg'))
            {

                $image_data = $this->upload->data();                
                $profile_img = base_url("assets/uploads/profile_uploads/".$image_data['file_name']);

                $data = array(
                        'profile_photo'=>$profile_img                       
                        );

                    $this->load->model('update/updateAdmin');
                    if(!$this->updateAdmin->updateAdminImg($data))
                    {
        $this->session->set_flashdata('profile_img_update_success','Profile photo updated successfully.');
                    redirect('update/admin_profile');
                    }
                    else
                    {
                        return FALSE;
                    }
            }
            else{
                $this->session->set_flashdata('profile_img_update_unsuccess','Profile photo could not updated. Please try again.');
                    redirect('update/admin_profile');
            }

        }

    }else{ 

return redirect('search'); 
}


}

这是模特：

public function updateAdminImg($data)
{
    $this->db->set($data);
    $this->db->where('login_id',$this->session->userdata('login_id'));
    unlink($data);
    $this->db->update('admin',$data);
}

这是视图：

<?php echo form_open_multipart('update/admin_profile_image');?>

<div class="row">
<div class="col-lg-6">
<label>Browse and Choose New Profile Image (Image size, Image dimension): 
</label>
<div class="form-group" style="line-height:33px;">
  <input type="file" name="updateprofileimg"  class="btn-primary btn-block">
</div>
  </div>
  <label class="col-lg-6 text-danger">
   <?php if(isset($error)){ echo $error; } ?>
  </label>
 </div>

   <?php echo form_submit(['type'=>'submit','class'=>'btn btn-primary','value'=>' Update']); ?>
  <?php echo form_reset(['type'=>'reset','class'=>'btn btn-warning','value'=>' Reset ']); ?>

<?php echo form_close(); ?>

Answer 1

控制器

public function admin_profile_image()
{
   $this->load->model('update/updateAdmin');
if($this->session->userdata('login_answer') != null){
    if('ADMIN'==$this->session->userdata('forredirect'))
    {
        //First, Get old image from database
        $old_image = $this->updateAdmin->get_old_image($this->session->userdata('login_id')); //Required parameter for image
        $image_with_path = 'file-path/'.$old_image;
        if(file_exists($image_with_path)){
            unlink($image_with_path);
        }    
        $config['upload_path']          = FCPATH.'assets/uploads/profile_uploads'; //If your file uploading folder outside the application folder
        //$config['upload_path']          = APPPATH.'assets/uploads/profile_uploads'; //If your file uploading folder inside the application folder
        $config['allowed_types']        = 'jpeg|jpg|png';
        $config['max_size']             = 100;
        $config['max_width']            = 1024;
        $config['max_height']           = 768;

       $this->load->library('upload', $config);                              
        if($this->upload->do_upload('updateprofileimg'))
        {
            $image_data = $this->upload->data();                
            $profile_img = base_url("assets/uploads/profile_uploads/".$image_data['file_name']);

            $data = array(
                    'profile_photo'=>$profile_img                       
                    );
                if(!$this->updateAdmin->updateAdminImg($data))
                {
    $this->session->set_flashdata('profile_img_update_success','Profile photo updated successfully.');
                redirect('update/admin_profile');
                }
                else
                {
                    return true;
                }
        }
        else{
            $this->session->set_flashdata('profile_img_update_unsuccess',$this->upload->display_errors());
                redirect('update/admin_profile');
        }

    }

}else{ 

return redirect('search'); 
}


}

型号

public function updateAdminImg($data)
{
  $this->db->set($data);
  $this->db->where('login_id',$this->session->userdata('login_id'));
  $this->db->update('admin');
}

public function get_old_image($login_id){
  return $this->db->get_where('admin', ['login_id' => $login_id])->row()->profile_photo;
}

如何使用Codeigniter更新上传的图片。必须来自数据库以及目录

1 个答案: