对复选框使用POST方法会在该页面的“重新加载/刷新”上产生问题

Question

I am using 9 checkboxes to get input from user and using POST method to get the data. The problem is that when I try to reload that page, the browser shows me this message-

"To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier." with 2 options, RESEND CANCEL. Please tell me what should I do. Can't use GET as it displays my whole search query.

Answer 1

If you are perform some search to get information, I recommend to just use GET . POST-REDIRECT-GET will also display your search query.

If you use post, the browser will confirm that you really want to do a post once more. Use GET to get data, use POST to operate the data, in my personal opinion.

Answer 2

在我的搜索表单中将方法请求类型从POST更改为GET，并取消了确认框。

Answer 3

Quick and dirty: Store all the values of the check boxes in a $_Session[] array and check for that first.

if($_SESSION["CheckBox1"] === "on")
{
    // Do Stuff
}
else
{
    // Get $_POST[] Data and do stuff
    $_SESSION["CheckBox1"] = $_POST["CheckBox1"];
    ...
}

When the user submits the Form you first check if the $_SESSION has data otherwise put data in it and go about your normal work. If a reload happens then the $_SESSION values are used and not the now empty $_POST array.

Answer 4

After posting the data, Redirect to the current page. That will cancel out the resend/cancel issue.

If your website is User-Profile based, you can have a look at the users data and return selected checked boxes.

OR

You can set a cookie value, via javascript [on checkbox click] or backend [when posting], this way you can store checked checkboxes and return it clicked on reload.

Answer 5

This only happen when you try to REFRESH page after POST Request.

Bowser asks you what should it do: resend POST data or simply refresh page without POSTING (send GET only).

The same behaviour on Chrome. Opera doesn't asks, just resend previously sent POST data by default.