On Feb 13, 2013, at 2:27 AM, Soichi Ishida wrote:
> Rails 3.2.11
>
> When users click a "submit" button, the app can show a confirm
dialog by
> adding
>
> :confirm => "Are you sure?"
>
> I need to let it appear if certain conditions are met. It does not
> appear if the conditions are not met although the submit action would
> get executed.
>
> Say, I have a checkbox, then some JavaScript function detects if the
> checkbox is checked or not.
> Then, when users decide to click the submit button, the javascript
> function sees if the checkbox status: the dialog appears if checked and
> submit action follows as users confirm it. The dialog does not appear
> but submit action gets executed without confirmation.
>
> Could anyone give me some ideas how to implement something described?
Sure. Set up two buttons on a scratch form page, look at the output in a
browser, and note the differences between them. (Depending on the version of
Rails you are using, it will be something like data-confirm="Are you
sure?" or it might be a blodge of inline JavaScript hooked to the click
event.)
What you''ll need to do -- in JavaScript -- is observe the form for
changes, and programmatically add that property or listener depending on the
current state of the form. In Prototype, I would use the Form.Observer method.
I''m not sure what the equivalent is in jQuery, but I''m sure
there''s something like it.
Walter
>
> soichi
>
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