Peter,
Actually, the matter is simpler than either of us seemed to
anticipate: the :confirm helper option just isn't very helpful. In
other words, all :confirm=>'Are you sure?' does is produce the raw
html onclick=>"return confirm('Are you sure?')". I had assumed that if
it were a helper, I should want to use it, not duplicate it, ergo my
post.
So, if anyone ever wants to make conditional the :confirm option of
the link_to/button_to erb function, use :onclick=>"if(...)
{ confirm('whatever text');}" -- involving whatever conditional logic
you like in the raw javascript.
Lille
On Jul 6, 10:23 am, Peter De Berdt <[email protected]> wrote:
> On 06 Jul 2010, at 14:47, Lille wrote:
>
> > I'd like to make the :confirm option in my link_to/button_to erb
> > elements conditional. So, if the page is in some state, no
> > confirmation is requested, but not otherwise, etc.
>
> > So far, my only (ugly) approach is to replace the linker html itself
> > depending on changes in state, but I believe there must be an easier
> > way to 'toggle' the confirmation option on/off.
>
> > Can anyone recommend an approach?
>
> Write your own Javascript which handles these page state changes and
> confirmation instead of relying on Rails Javascript helpers. Those
> helpers were only made for the most basic operations. You wouldn't use
> a teaspoon to empty a bath either, even if you could put a bigger
> handle on the spoon.
>
> Flow:
> - Observe link clicks (you can add a class="confirmable" or something
> to them if you want to apply it only to that element)
> - Observe the elements on the page that will trigger a state change
> - If those elements are changed, add the state to window or something
> - When a link is clicked, it should see if window.state_changed ==
> true and display the confirmation, if not, just window.location ==
> link.href
>
> You would be best off implementing this in an event delegated way if
> there's a lot of elements that can change the page state, as well as
> new elements being injected into the page via AJAX.
>
> Best regards
>
> Peter De Berdt
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