Ruby on Rails

Hi,

Works perfectly!

Thanks a lot.

El 29/06/2011 13:57, Walter Lee Davis escribió:
>
> On Jun 29, 2011, at 7:35 AM, Jim Ruther Nill wrote:
>
>>
>>
>> On Wed, Jun 29, 2011 at 7:04 PM, Miquel Cubel <mcubel@gmail.com> wrote:
>> Hi,
>>
>> We are encountering occasions where users post twice or more a
>> form, basically we have detected two situations:
>> a) The user push twice enter
>> b) The user push double click on button "save" or "submit"
>>
>>
>> Simplest solution we've done before is disabling the button on
>> submit. this should work on all browsers.
>
> <%= f.submit 'Save', :disable_with => 'Saving...' %>
>
> Nice and simple, and in the newer Rails, unobtrusive, too.
>
> Walter
>
>>
>> We consider that this becomes a problem when creating (because we
>> duplicate data) and we think that in some context it could become a
>> security issue (like posting twice a payment), so we like to know How
>> do you approach it?
>>
>> Our approaches to the problem:
>> a) JavaScript implementation like "<form
>> onSubmit="doublePostCheck()"> and only returning true the first time
>> -> Problems: different navigators (firefox, safari....),
>> b) Token / Flag validation, base on a hidden variable in the form,
>> and validation of a unique token/server for post in the server
>> -> Problems: how do you handle errors... do you save the first
>> register and raise and error for the second?
>> -> Where should we implemented in the controller "create"? Can
>> it be in the class ApplicationController?
>> c) Hash of the data in the post, and checking if last hash is
>> different than the new one
>> -> Problems: how do you handle errors... do you save the first
>> register and raise and error for the second? We can't duplicate data
>> if we need it
>> -> Where should we implemented in the controller "create"? Can
>> it be in the class ApplicationController?
>>
>> Thanks in advanced
>>
>> --
>> Miquel Cubel Escarré
>> +34 699 73 22 46
>> mcubel@gmail.com
>>
>> "Computers are good at following instructions, but not at reading
>> your mind." Donald Knuth.
>>
>> "Los ordenadores son buenos siguiendo instrucciones, pero no leyendo
>> tu mente." Donald Knuth.
>>
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>>
>>
>>
>> --
>> -------------------------------------------------------------
>> visit my blog at http://jimlabs.heroku.com
>>
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--
Miquel Cubel Escarré
+34 699 73 22 46
mcubel@gmail.com

"Computers are good at following instructions, but not at reading your mind." Donald Knuth.

"Los ordenadores son buenos siguiendo instrucciones, pero no leyendo tu mente." Donald Knuth.

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