为什么提交表单时我的 CodeIgniter 表单值为空？

Question

在学习如何使用 Code Igniter 时，我在提交表单值时遇到了问题。如果 $_POST 不成功，我会尝试插入并重定向到表单，但是每次我提交表单时，我都会看到我的标题中没有表单值。即使在浏览了几篇相关帖子后也无法弄清楚做错了什么，希望这里的专家能提供帮助。这就是我正在使用的东西

查看：new_product.php

<form action="products/new_product" method="POST" role="form">
    <legend>Upload New Item</legend>

    <div class="form-group">
        <label for="">Name</label>
        <input type="text" class="form-control" id="name" placeholder="Input field">
        <label for="">Description</label>
        <input type="text" class="form-control" id="description" placeholder="Input field">
        <label for="">Category</label>
        <input type="text" class="form-control" id="category" placeholder="Input field">
        <label for="">Price</label>
        <input type="text" class="form-control" id="price" placeholder="Input field">
    </div>

    <button type="submit" class="btn btn-primary">Upload</button>
</form>

控制器：products.php

public function new_product() 
{
    if ($_POST) {
        $data = array(
            'category' => $this->input->post('category'),
            'name' => $this->input->post('name'),
            //'photo' => $this->input->post('photo'),
            'description' => $this->input->post('description'),
            'price' => $this->input->post('price')
        );
        $this->product->upload_product($data);
        redirect(base_url().'products/');
    } else {
        $this->load->view('header', FALSE);
        $this->load->view('new_product');
        $this->load->view('footer', FALSE);
    }
}

型号：product.php

function upload_product($data) {
    $this->db->insert('products', $data);
    return $this->db->insert_id();
}

.htaccess

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]

表单提交期间的标题记录器

Answer 1

尝试在表单中添加此内容，

<input type="hidden" name="<?php echo $this->security->get_csrf_token_name(); ?>" value="<?php echo $this->security->get_csrf_hash(); ?>">

所以你的标记现在是这样的，

<form action="products/new_product" method="POST" role="form">
    <input type="hidden" name="<?php echo $this->security->get_csrf_token_name(); ?>" value="<?php echo $this->security->get_csrf_hash(); ?>">
    <legend>Upload New Item</legend>

    <div class="form-group">
        <label for="">Name</label>
        <input type="text" class="form-control" id="name" placeholder="Input field">
        <label for="">Description</label>
        <input type="text" class="form-control" id="description" placeholder="Input field">
        <label for="">Category</label>
        <input type="text" class="form-control" id="category" placeholder="Input field">
        <label for="">Price</label>
        <input type="text" class="form-control" id="price" placeholder="Input field">
    </div>

    <button type="submit" class="btn btn-primary">Upload</button>
</form>

Answer 2

试试这个.. 你错过了 name 属性

<form action="products/new_product" method="POST" role="form">
    <legend>Upload New Item</legend>

    <div class="form-group">
        <label for="">Name</label>
        <input type="text" class="form-control" name="name" id="name" placeholder="Input field">
        <label for="">Description</label>
        <input type="text" class="form-control" name="description" id="description" placeholder="Input field">
        <label for="">Category</label>
        <input type="text" class="form-control" name="category" id="category" placeholder="Input field">
        <label for="">Price</label>
        <input type="text" class="form-control" id="price" name="price" placeholder="Input field">
    </div>

    <button type="submit" class="btn btn-primary">Upload</button>
</form>

Answer 3

你的表单应该是这样的（没有给出名称和值属性）

       <form action="products/new_product" method="POST" role="form">
              <legend>Upload New Item</legend>

             <div class="form-group">
                 <label for="">Name</label>
                   <input type="text" name="name" value="" class="form-control" id="name" placeholder="Input field">
                   <label for="">Description</label>
                   <input type="text" name="description" value="" class="form-control" id="description" placeholder="Input field">
                  <label for="">Category</label>
                 <input type="text" name="category" value="" class="form-control" id="category" placeholder="Input field">
                 <label for="">Price</label>
                  <input type="text" name="price" value="" class="form-control" id="price" placeholder="Input field">
            </div>

          <button name='submit' type="submit" class="btn btn-primary">Upload</button>
     </form>

http://www.w3schools.com/html/html_forms.asp

Answer 4

当然，CSRF 是必需的，但我认为您的问题不同。 您错过了为每个input 标签添加name 属性。

例如

<input type="text" class="form-control" id="name" name="first_name" placeholder="Input field">