rails: ajax avoid multiple form submit

Question

I have an submit button and need to ensure that is only pressed/submit one time until the AJAX request is finished. The Javascript solutions are not safe in case of noScript. Is there a propper way to do that in Rails?

Maurício Linhares · Accepted Answer · 2011-11-30 11:30:12Z

1

Simplest solution would be generating a token and placing it as a hidden form field. When the form is submitted, go to the database and mark the token as used, if another form submit sends the same token again, it's a double submit and you should do whatever you would like to do with it.

answered Nov 30, 2011 at 11:30

Maurício Linhares

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3 Comments

Karl Adler Over a year ago

thanks, sounds like a safe and good solution, but i'm not using a local database at my project so I need another solution... maybe session cookies, but that's not such a safe way..

Maurício Linhares Over a year ago

Storing them in the session is more complicated as you might run into a cookie overflow for adding many cookies to your session.

Eden Townsend Over a year ago

Session cookies will only get set on the client if it receives the response. If the user double-clicks the submit button, the browser won't be waiting for a response, therefore will never receive it. Storing a value inside the session object is probably a much better choice.

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