0

好的，这就是我想要做的：

我有一个添加书籍表单，其中包含某些元素，例如标题、描述、作者和图像等。在添加表单中，我还有一些复选框，它们是用户想要放置书籍的类别。到目前为止，当用户单击在表单上添加图书按钮，所有输入均已验证，图书信息已插入数据库，图片上传成功。

一旦这一切都发生了，在模型中，我将返回刚刚添加到数据库中的记录的 book_id 并将其插入到另一个表中，如下所示：

$book_id = $this->db->insert_id();
$data = array(
        'book_linktable_book_id' => $book_id,
    );
$this->db->insert('book_linktable', $data);

我需要将 book_category_id 与 book_id 一起插入到另一个表中。因此，对于用户选择的每个类别，将 book_id 和 book_category_id 插入到另一个表中。

这是控制器代码：

function create_book(){
    $this->form_validation->set_rules('title', 'Title', 'trim|xss_clean|required|max_length[50]');
    $this->form_validation->set_rules('description', 'Description', 'trim|xss_clean|required|max_length[600]');
    $this->form_validation->set_rules('exam_grade', 'Exam Grade', 'trim|xss_clean|required|max_length[10]');
    $this->form_validation->set_rules('author', 'Author', 'trim|xss_clean|required|max_length[25]');
    $this->form_validation->set_rules('edition', 'Edition', 'trim|xss_clean|required|max_length[15]');
    $this->form_validation->set_rules('publisher', 'Publisher', 'trim|xss_clean|required|max_length[30]');
    $this->form_validation->set_rules('price', 'Price', 'trim|xss_clean|required');
    if ($this->form_validation->run() == FALSE)
    {
        $data = $this->style_model->admin_area();
        $data['category_query'] = $this->admin_books_model->get_book_categories();
        $data['page_title'] = 'Add New Book';
        $this->load->view('admin/books/add_book', $data);
    }
    else
    {           
        //upload the image and create thumbnail
        $config['upload_path'] = APPPATH . 'uploads/';
        $config['allowed_types'] = 'jpeg|jpg|gif|png';
        $config['max_size'] = '1024';
        $this->load->library('upload', $config);

        $field_name = "image";
        if( ! $this->upload->do_upload($field_name))
        {
            //failed to upload
            $data = $this->style_model->admin_area();
            $data['category_query'] = $this->admin_books_model->get_book_categories();
            $data['page_title'] = 'Add New Book';
            $this->form_validation->set_message("image", "Image size too large");
            $this->load->view('admin/books/add_book', $data);
        }
        else
        {
            //image uploaded
            $data = $this->input->post('category');
            $this->load->view('admin/category', $data);
            /*$upload_data = $this->upload->data('file_name');
            $image_name = $upload_data['file_name'];
            $this->admin_books_model->add_book($image_name);
            $this->session->set_flashdata('msg', 'New Book Created');
            redirect('admin_books');*/
        }
    }   
} //function create_book()

这是模型代码：

function add_book($image_name){
    $data = array(
          'book_name' => $this->input->post('title'),
          'book_description' => $this->input->post('description'),
          'book_grade' => $this->input->post('exam_grade'),
          'book_author' => $this->input->post('author'),
          'book_edition' => $this->input->post('edition'),
          'book_publisher' => $this->input->post('publisher'),
          'book_price' => $this->input->post('price'),
          'book_image' => $image_name,
        );
    $this->db->insert('books', $data);

    $book_id = $this->db->insert_id();
    //for each category selected, getthe id and insert into link table


    $data = array(
        'book_linktable_book_id' => $book_id,
    );
    $this->db->insert('book_linktable', $data);
} //function add_book()

这是视图中的表单代码：

<div id="left_form_content">
            <?php echo form_open_multipart('admin_books/create_book'); ?>
            <?php echo form_label('Title') . "<br />"; ?>
            <?php echo form_input('title', set_value('title')); ?>
            <?php echo form_error('title') . "<br />"; ?>
            <?php echo form_label('Exam Grade') . "<br />"; ?>
            <?php echo form_input('exam_grade', set_value('exam_grade')); ?>
            <?php echo form_error('exam_grade') . "<br />"; ?>
            <?php echo form_label('Edition') . "<br />"; ?>
            <?php echo form_input('edition', set_value('edition')); ?>
            <?php echo form_error('edition') . "<br />"; ?>
            <?php echo form_label('Author') . "<br />"; ?>
            <?php echo form_input('author', set_value('author')); ?>
            <?php echo form_error('author') . "<br />"; ?>
            <?php echo form_label('Publisher') . "<br />"; ?>
            <?php echo form_input('publisher', set_value('publisher')); ?>
            <?php echo form_error('publisher') . "<br />"; ?>
        </div>
        <div id="right_form_content">
            <?php echo form_label('Description') . "<br />"; ?>
            <?php echo form_textarea('description', set_value('description')); ?>
            <?php echo form_error('description') . "<br />"; ?>
            <?php echo form_label('Categories') . "<br />"; ?>
            <?php
                foreach($category_query as $data) {
                    echo "<input type='checkbox' name='category[]' value='" . $data->book_category_id . "'>" . $data->book_category_name . "</input>" . "<br />";
                }
            ?>          
            <?php echo form_error('categories') . "<br />"; ?>
            <?php echo form_label('Image') . "<br />"; ?>
            <?php echo form_upload('image', set_value('image')); ?>
            <?php echo form_error('image') . "<br />"; ?>
            <?php echo form_label('Price') . "<br />"; ?>
            <?php echo form_input('price', set_value('price')); ?>
            <?php echo form_error('price') . "<br />"; ?>
            <?php echo form_submit('submit', 'Add Book'); ?>
            <?php echo form_close(); ?>
        </div>
        <div class="clear"></div>

提前感谢您的帮助，

汤姆

编辑：

以下是数据库表：

Books
book_id
book_title
book_description
book_author
book_grade
book_edition
book_publisher
book_image
book_price

book_categories
book_category_id
book_category_name


book_linktable
    book_linktable_book_id
    book_linktable_book_category_id
4

1 回答 1

0

你似乎离你想要完成的事情很近。您只需要遍历类别 ID 的数组并插入如下行：

$categories = $this->input->post('category');
foreach ($categories as $category_id)
{
    $this->db->insert('book_linktable', array(
        'book_linktable_book_id' => $book_id,
        'book_linktable_book_category_id' => $category_id
    ));
}

或者，您也可以使用该insert_batch()方法。

$data = array();
foreach ($categories as $category_id)
{
    $data[] = array('book_linktable_book_id' => $book_id,
                    'book_linktable_book_category_id' => $category_id
    );
}
$this->db->insert_batch('book_linktable', $data);
于 2012-09-24T16:14:55.073 回答