Laravel 5 如何让控制器显示简单的消息框或警报？
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Laravel 5 how to get controller display simple message box or alert?
提问by Nikanor
Cannot find solution to this simple problem, i just do some voting app, and if users votes I would like to show simple alert like "Thanks" , but I cannot find the way to do it from the controller? I have tried the simple jQuery code like this but it's not working.
找不到这个简单问题的解决方案，我只是做一些投票应用程序，如果用户投票，我想显示像“谢谢”这样的简单警报，但我找不到从控制器中做到这一点的方法？我已经尝试过像这样的简单 jQuery 代码，但它不起作用。
echo "<script>alert('You have already voted');</script>";
Any simple solutions?
有什么简单的解决办法吗？
public function voting()
{
$ip=$_SERVER['REMOTE_ADDR'];
$id = Input::get('msg_id');
$vote = Input::get('vote');
$count = Voting::wheremes_id_fk($id)->whereip_add($ip)->count();
if($count==0)
{
if($vote == "up")
{
Project::whereid($id)->increment('up');
Voting::insert(
array('mes_id_fk' => $id, 'ip_add' => $ip )
);
}
else if ($vote=="down") {
Project::whereid($id)->decrement('down');
Voting::insert(
array('mes_id_fk' => $id, 'ip_add' => $ip )
);
}
}
else {
// How to popup "thanks" alert??
}
}
回答by Jilson Thomas
If you are using ajax to do the vote, return a jsonresponse and use JavaScriptto respond to the jsonresponse.
如果您使用ajax进行投票，则返回json响应并使用JavaScript响应json响应。
example:
例子：
public function vote()
{
//your voting code
return Response::json(['success'=>true]);
}
and in your JavaScript, check the json
并在您的 中JavaScript，检查 json
$.post('/vote/', { id: 123 }, function(data){
if(data.success== true)
{
alert('Thanks for voting);
}
}
If you are not using ajax, simply use the Session flash.
如果您不使用 ajax，只需使用 Session flash。
i.e., from your controller,
即，从您的控制器，
public function vote()
{
//your voting code
Session::flash('msg', 'Thanks for voting');
return Redirect::back();
}
and from View,
从视图中，
@if(Session::has('msg'))
{{Session::get('msg')}}
@endif
