php - Codeigniter : I am trying to submit form either if user chooses any image to upload or not choose. 这可能吗？

Question

现在，当我选择要上传的图片时，提交表单效果很好。但是即使没有选择任何图像，我也尝试提交相同的表格...

Controller

function create(){
        $this->data['categories'] = $this->News_model->getNewsCategories();
        $this->data['status'] = $this->status;

        if($this->input->post()){

            $title =$this->input->post('title');
            $slug =$this->input->post('slug');
            $desc =$this->input->post('desc');
            $category_id =$this->input->post('category');
            $upload_path = FCPATH.'assets/uploads/news';
            $field_name ='image';
            $temp_file_name = $this->file[$field_name]['name'];
            $file_name = time().'_'.$this->randomString(10).'.'.$this->getFileExtension($temp_file_name);

            if(!$this->uploadImage($upload_path,$file_name,$field_name)){
            $this->session->set_flashdata('error', $this->file_error);
            }
        else{
                $this->createThumbnail($this->file_data['full_path'], $upload_path.'/thumb/'.$file_name,75,50);
                if(!$this->News_model->insertNews($title,$slug,$desc,$category_id,$file_name)){
                    $this->session->set_flashdata('error', 'Record couldn\'n inserted. Please try again.');
                }
                else{
                    $this->session->set_flashdata('success', 'News created.');
                    redirect('admin/news');
                }
            }


        }
        $this->load->view('admin/template/header');
        $this->load->view('admin/news/create',$this->data);
        $this->load->view('admin/template/footer');
    }

如果有人想为这两种情况提交表格，请帮助我解决这个问题。谢谢……

Answer 1

如果文件名的条件不为空，试试这段代码就放一个

    function create(){
                $this->data['categories'] =  $this->News_model->getNewsCategories();
                $this->data['status'] = $this->status;

                if($this->input->post()){

                    $title =$this->input->post('title');
                    $slug =$this->input->post('slug');
                    $desc =$this->input->post('desc');
                    $category_id =$this->input->post('category');
                    $file_name = $_FILES['image']['name'];

                    if(!empty($file_name)){

                    $upload_path = FCPATH.'assets/uploads/news';
                    $field_name ='image';
                    $temp_file_name = $this->file[$field_name]['name'];
                    $file_name = time().'_'.$this->randomString(10).'.'.$this->getFileExtension($temp_file_name);

                    if(!$this->uploadImage($upload_path,$file_name,$field_name)){
                    $this->session->set_flashdata('error', $this->file_error);
                    }
                    else{
                        $this->createThumbnail($this->file_data['full_path'], $upload_path.'/thumb/'.$file_name,75,50);
                    }
                   } 
                  if(!$this->News_model->insertNews($title,$slug,$desc,$category_id,$file_name)){
                            $this->session->set_flashdata('error', 'Record couldn\'n inserted. Please try again.');
                        }
                        else{
                            $this->session->set_flashdata('success', 'News created.');
                            redirect('admin/news');
                        }
                    }



                $this->load->view('admin/template/header');
                $this->load->view('admin/news/create',$this->data);
                $this->load->view('admin/template/footer');
            }