使用 ajax 在 codeigniter 控制器中调用函数不起作用
calling function in codeigniter controller using ajax not working
我有一个 codeigniter
网站,我在其中完成了添加到购物车的功能,点击按钮后,产品会在页面重新加载后添加到购物车,效果很好,我在控制器中执行了以下代码:
public function buy($id)
{
$color= $this->input->post('color');
$size=$this->input->post('size');
$product = $this->product->find($id);
$item = array(
'id' => $product->id,
'name' => $product->pname,
'quantity' => 1
);
if(!$this->session->has_userdata('cart')) {
$cart = array($item);
$this->session->set_userdata('cart', serialize($cart));
} else {
$index = $this->exists($id);
$cart = array_values(unserialize($this->session->userdata('cart')));
if($index == -1) {
array_push($cart, $item);
$this->session->set_userdata('cart', serialize($cart));
} else {
// $cart[$index]['quantity']++;
// $this->session->set_userdata('cart', serialize($cart));
$this->session->set_flashdata("Error","Product Already In Cart !");
redirect($_SERVER['HTTP_REFERER']);
}
}
$this->session->set_flashdata("Success","Product Added To Cart Successfully !");
redirect($_SERVER['HTTP_REFERER']);
}
现在我正在尝试使用 ajax
调用此函数,以便将产品添加到购物车而无需重新加载页面。我做了以下代码:
$("#change").submit(function() {
alert("Change");
var id = $('#prod').val();
$.ajax({
type: 'POST',
url: "<?php echo base_url(); ?>" + "index.php/homecontroller/buy/" + id,
data: {
'id': id
},
success: function(data) {
$('#resultdiv').html(data);
}
});
});
<form action="" method="post" id="change">
<input type="hidden" value="<?php echo $product->id; ?>" id="prod">
<input type="submit" value="switch">
</form>
<div class="resultdiv">
<?php echo $data; ?>
</div>
但是它没有添加到购物车,它只是重新加载页面。谁能告诉我这里有什么问题吗?
因为表单还在提交,可以使用preventDefault();
$("#change").submit(function(e) {
e.preventDefault();
alert("Change");
var id = $('#prod').val();
$.ajax({
type: 'POST',
url: "<?php echo base_url(); ?>" + "index.php/homecontroller/buy/" + id,
data: {
'id': id
},
success: function(data) {
$('#resultdiv').html(data);
}
});
});
我有一个 codeigniter
网站,我在其中完成了添加到购物车的功能,点击按钮后,产品会在页面重新加载后添加到购物车,效果很好,我在控制器中执行了以下代码:
public function buy($id)
{
$color= $this->input->post('color');
$size=$this->input->post('size');
$product = $this->product->find($id);
$item = array(
'id' => $product->id,
'name' => $product->pname,
'quantity' => 1
);
if(!$this->session->has_userdata('cart')) {
$cart = array($item);
$this->session->set_userdata('cart', serialize($cart));
} else {
$index = $this->exists($id);
$cart = array_values(unserialize($this->session->userdata('cart')));
if($index == -1) {
array_push($cart, $item);
$this->session->set_userdata('cart', serialize($cart));
} else {
// $cart[$index]['quantity']++;
// $this->session->set_userdata('cart', serialize($cart));
$this->session->set_flashdata("Error","Product Already In Cart !");
redirect($_SERVER['HTTP_REFERER']);
}
}
$this->session->set_flashdata("Success","Product Added To Cart Successfully !");
redirect($_SERVER['HTTP_REFERER']);
}
现在我正在尝试使用 ajax
调用此函数,以便将产品添加到购物车而无需重新加载页面。我做了以下代码:
$("#change").submit(function() {
alert("Change");
var id = $('#prod').val();
$.ajax({
type: 'POST',
url: "<?php echo base_url(); ?>" + "index.php/homecontroller/buy/" + id,
data: {
'id': id
},
success: function(data) {
$('#resultdiv').html(data);
}
});
});
<form action="" method="post" id="change">
<input type="hidden" value="<?php echo $product->id; ?>" id="prod">
<input type="submit" value="switch">
</form>
<div class="resultdiv">
<?php echo $data; ?>
</div>
但是它没有添加到购物车,它只是重新加载页面。谁能告诉我这里有什么问题吗?
因为表单还在提交,可以使用preventDefault();
$("#change").submit(function(e) {
e.preventDefault();
alert("Change");
var id = $('#prod').val();
$.ajax({
type: 'POST',
url: "<?php echo base_url(); ?>" + "index.php/homecontroller/buy/" + id,
data: {
'id': id
},
success: function(data) {
$('#resultdiv').html(data);
}
});
});