Facebooker talk - Feb 2008 - Call a javascript function from a controller

Hi,

I don''t really understand if it''s possible to call a
javascript function
from a rails controller.
For instance, I want to update my view when someone submit my form and after
I checked it was valid. ( puts a "<fb:success message=\"Changes
saved.\" />"
in my case).

def save
    # I do all my verifications...
    render :update do |page|
       page.call "my_javascript_function"
       # Or with facebook id : page.call
"aXXXXXXXX_my_javascript_function"
    end
end

Is there a way to do it ?
Thanks a lot, I''m a bit lost :S

Matt
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Matt,
You need to read up on respond_to blocks it takes a .js argument to  
be used when a page requests a javascript return object. You can then  
use something like an rjs template to update the page that called it  
through something like an ajax event.

Mark
On Feb 24, 2008, at 6:23 AM, Matthieu Ruiz wrote:
> Hi,
>
> I don''t really understand if it''s possible to call a
javascript
> function from a rails controller.
> For instance, I want to update my view when someone submit my form  
> and after I checked it was valid. ( puts a "<fb:success message= 
> \"Changes saved.\" />" in my case).
>
> def save
>     # I do all my verifications...
>     render :update do |page|
>        page.call "my_javascript_function"
>        # Or with facebook id : page.call  
> "aXXXXXXXX_my_javascript_function"
>     end
> end
>
> Is there a way to do it ?
> Thanks a lot, I''m a bit lost :S
>
> Matt
>
> _______________________________________________
> Facebooker-talk mailing list
> Facebooker-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/facebooker-talk

I could be wrong, but I dont think the rjs stuff works out of the box  
with facebook. Mike is working on a facebook specific link_to_remote  
that will be the simplest way to do this , but until then you can do  
it yourself.

see http://jnylund.typepad.com/joels_blog/2008/02/ajax-rails-face.html  
for some examples of how to do ajax/js stuff in facebook.

Joel



On Feb 24, 2008, at 7:23 AM, Matthieu Ruiz wrote:
> Hi,
>
> I don''t really understand if it''s possible to call a
javascript
> function from a rails controller.
> For instance, I want to update my view when someone submit my form  
> and after I checked it was valid. ( puts a "<fb:success message= 
> \"Changes saved.\" />" in my case).
>
> def save
>     # I do all my verifications...
>     render :update do |page|
>        page.call "my_javascript_function"
>        # Or with facebook id : page.call  
> "aXXXXXXXX_my_javascript_function"
>     end
> end
>
> Is there a way to do it ?
> Thanks a lot, I''m a bit lost :S
>
> Matt
>
> _______________________________________________
> Facebooker-talk mailing list
> Facebooker-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/facebooker-talk

If you look at Joel''s second example and wrap you javascript function
call in <script> tags then your function should get called.


def example2
    is_checked = params[:ischecked]
    if is_checked == "true"
      txt_to_render = "<fb:success message=\"Task has been marked
complete!\" /> <script>
aXXXXXXXX_my_javascript_function();</script>"
    else
      txt_to_render = "<fb:success message=\"Task has been marked
incomplete!\" />"
    end
    render :text => txt_to_render, :layout => false
  end


Dave

On Sun, Feb 24, 2008 at 8:43 AM, Joel Nylund <jnylund at yahoo.com>
wrote:
> I could be wrong, but I dont think the rjs stuff works out of the box
>  with facebook. Mike is working on a facebook specific link_to_remote
>  that will be the simplest way to do this , but until then you can do
>  it yourself.
>
>  see http://jnylund.typepad.com/joels_blog/2008/02/ajax-rails-face.html
>  for some examples of how to do ajax/js stuff in facebook.
>
>  Joel
>
>
>
>
>  On Feb 24, 2008, at 7:23 AM, Matthieu Ruiz wrote:
>
>
>
> > Hi,
>  >
>  > I don''t really understand if it''s possible to call
a javascript
>  > function from a rails controller.
>  > For instance, I want to update my view when someone submit my form
>  > and after I checked it was valid. ( puts a "<fb:success
message>  > \"Changes saved.\" />" in my case).
>  >
>  > def save
>  >     # I do all my verifications...
>  >     render :update do |page|
>  >        page.call "my_javascript_function"
>  >        # Or with facebook id : page.call
>  > "aXXXXXXXX_my_javascript_function"
>  >     end
>  > end
>  >
>  > Is there a way to do it ?
>  > Thanks a lot, I''m a bit lost :S
>  >
>  > Matt
>  >
>
>
> > _______________________________________________
>  > Facebooker-talk mailing list
>  > Facebooker-talk at rubyforge.org
>  > http://rubyforge.org/mailman/listinfo/facebooker-talk
>
>
>  _______________________________________________
>  Facebooker-talk mailing list
>  Facebooker-talk at rubyforge.org
>  http://rubyforge.org/mailman/listinfo/facebooker-talk
>