如何使用从PHP文件中的错误信息到Ajax响应? [英] How to use error messages from PHP file into AJAX response?
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问题描述
我下面code文件上传: HTML code:
I've following code for file upload : HTML code :
<a href="#" id="promotion_status_1">
<button type="button" class="btn btn-default brmodalbtn" data-toggle="modal" data-target="#BrandImageModal" id="1">On</button>
</a>
<div class="container">
<div class="modal fade" id="BrandImgeModaal">
<div class="modal-dialog">
<div class="modal-content">
<form id="form" enctype="multipart/form-data" role="form">
<input type="text" class="form-control" name="brand_id" id="brand_id" value="{$data.id}">
<input type="text" name="admin_url" id="admin_url" value="http://localhost/abc.com">
<input type="text" name="op" value="upload_brand_image">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button>
<h4 class="modal-title">Brand Image</h4>
</div>
<div class="modal-body">
<div id="messages"></div>
<input type="file" name="file" id="file">
</div>
<div class="modal-footer">
<button type="submit" class="btn btn-primary">Save</button>
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</form>
</div>
</div>
</div>
</div>
jQuery的AJAX code:
jQuery AJAX Code :
$('#form').submit(function(e) {
var form = $(this);
var formdata = false;
if(window.FormData) {
formdata = new FormData(form[0]);
}
var formAction = form.attr('action');
$.ajax({
type : 'POST',
url : 'manufacturers.php',
cache : false,
data : formdata ? formdata : form.serialize(),
//data : formdata ? formdata : form.serialize() + '&' + $.param({'op':'upload_brand_image'}),
contentType : false,
processData : false,
success: function(response) {
if(response != 'error') {
//$('#messages').addClass('alert alert-success').text(response);
// OP requested to close the modal
$('#BrandImgeModaal').modal('hide');
} else {
$('#messages').addClass('alert alert-danger').text(response);
}
}
});
e.preventDefault();
});
现在的PHP code是如下:
Now the PHP code is as follows :
$request = $_REQUEST ;
switch( $op ) {
case "add":
case "upload_brand_image":
//print_d($request);
//here if error comes in validation I've an array of errors which needs to be printed in AJAX response. Following is the array
$error_messages = array(
"email" => "Email Id can't be blank",
"email_invalid" => "Email Id is not valid"
);
die;
break;
}
我的问题是我应该如何使用数组 $ error_messages
在Ajax响应,如果错误不来那么成功消息应该传递给AJAX功能,而不是这$ errror_messages阵列。
My issue is how should I use the array $error_messages
in ajax response and if the error doesn't come then the success message should be passed to ajax function instead of this $errror_messages array.
如何实现这一目标?是否有人可以帮助我在这方面?
How to achieve this? Can someone please help me in this regard?
感谢。
推荐答案
为什么不使用JSON格式?
why not use json format?
$.ajax({
dataType : 'json',
........
........
success: function(response) {
if(response.email_invalid){
//do something
}else{
//do something
}
}
});
然后在你的PHP回声误差
then in your php echo the error
$error_messages = array(
"email" => "Email Id can't be blank",
"email_invalid" => "Email Id is not valid"
);
echo json_encode($error_messages);
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