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I am making a simple web app that opens a url on entering a query. I am using the bottle framework in Python. The problem I am facing is as follows:

I have two URL handlers, one for / and other for /process. When the user enters a query through a form on /, the form action goes to /process which then processes the query and opens a particular url using window.open(url, "_self"). Now when the user hits the back button in the browser, /process is called again with the same query, which then again loads the same url. Instead of this, I want it to go / when the back button is pressed. How can I do this? Thanks.

EDIT : I did not notice this before but the above undesired behavior is found in Firefox but not in Chrome.

2 Answers2

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You can use the window.history object to manipulate and replace the history or, instead of using window.open(url, "_self"), replace the location

example:

window.location.replace(url);

Check some documentation and this answer In Javascript, how do I "clear" the back (history -1)?

Another solution could be to intercept when the user is going to go back. Check this answer to have some examples:

Intercepting call to the back button in my AJAX application: I don't want it to do anything!

Community
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ProGM
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  • The solution worked. Please see my question edit. Any clue why the problem was browser dependent? –  Jan 02 '14 at 18:16
  • how was the url passed to `window.open` formed? – ProGM Jan 02 '14 at 18:49
  • It wasn't actually formed. It was selected out from a list of urls returned by a search engine. –  Jan 02 '14 at 20:03
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Don't redirect using window.open, or any kind of client-side JavaScript.

Have the HTTP response to the request for /process be a 302 Found HTTP status with a Location header.

See also The Post/Redirect/Get Pattern.

Quentin
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  • +1 for the elaborative wikipedia link. Any reason why the problem was browser dependent? –  Jan 02 '14 at 18:14