codeigniter - 将产品添加到购物车

Question

朋友们，我正在开发一个电子商务网站（使用 Codeigniter）。

客户填写商品数量并点击“购买”后，只有“数量”字段的商品才会被填入购物车。你能帮助我吗？

HTML：

<form>
<ul class="products-list">
    <li class="product">
        <input type="hidden" class="product_id" value="1">
        <span class="product-name">Product 1</span>
        <span class="product-value">$ 100</span> 
        <span>Qnt. <input type="text" class="quantity"></span> 
    </li>
        <li class="product">
        <input type="hidden" class="product_id" value="2">
        <span class="product-name">Product 2</span>
        <span class="product-value">$ 100</span> 
        <span>Qnt. <input type="text" class="quantity"></span> 
    </li>
</ul>
<button>Buy</button>
</form>

---

jQuery：

$.ajax({
    url: '/cart/add/'+product_id+'/'+quantity,
    type: 'GET',
    success: function( data ){
        if ( data != false ) {
            window.location.reload();
        }
    }
});

---

我的 PHP 代码：

public function addItem( $product_id, $quantity){ 
    $product = $this->Produto_model->getById($product_id); 
    $this->carrinho->setItem($product, $quantity); 
    echo json_encode($this->carrinho); 
}  

Answer 1

像这样试试

HTML：

<form id="form-cart">
    <ul class="products-list">
        <li class="product">
            <input type="hidden" class="product_id" value="1">
            <span class="product-name">Product 1</span>
            <span class="product-value">$ 100</span> 
            <span>Qnt. <input type="text" class="quantity" value="1"></span> 
        </li>
            <li class="product">
            <input type="hidden" class="product_id" value="2">
            <span class="product-name">Product 2</span>
            <span class="product-value">$ 100</span> 
            <span>Qnt. <input type="text" class="quantity" value="1"></span> 
        </li>
    </ul>
    <button id="form-cart-btn">Buy</button>
</form>


<script type="text/javascript">
    $("#form-cart #form-cart-btn").click(function(){
        form = $("#form-cart");

        items = [];

        form.find('li').each(function(i, e){
            _e  = $(e);
            qty = parseInt(_e.find('.quantity').val());

            if(isNaN(parseFloat(qty)) || ! isFinite(qty) || qty == 0)
                return;

            id = _e.find('.product_id').val();
            items.push('item[' + id + ']=' + qty);
        });

        items = items.join('&');

        $.ajax({
            url: '/cart/add/?' + items,
            dataType: 'json',
            success: function(response)
            {
                if(response.status != 'success')
                    return false;

                window.location.reload();
            }
        });
        return false;
    });
</script>

购物车控制器：

class Cart extends CI_Controller
{
    public function add()
    { 
        $items = isset($_GET['items']) ? $_GET['items'] : array();

        foreach($items as $product_id => $qty)
        {
            $product = $this->Produto_model->getById($product_id);
            if( ! $product)
            {
                ++$i;
                continue;
            }
            $this->carrinho->setItem($product, $qty);
            ++$i;
        }

        header("Content-type: application/json");
        echo json_encode(array('status'=>'success'));
        exit();
    }  
}