Rails - Jul 2008 - text_field_with_auto_complete - Trigger on NonSelecting

Hi,

I am using  text_field_with_auto_complete on a field. I update a part of
my page if user chooses any particular option listed by auto_complete
list. To do this I call and remote_function  with :after_update_element.

But I also wanna update a part of my page if user doesn''t select
anything from the autocomplete list.

For EX: I want to Bring it to notice of the user that the "Name" that
he
has not entered is not in our database. The div like below should be
higlighted

<div id ="error_box" class="error_box"
style="display:none">
<span class="showtext bold"> Hospital entered was not found.
Please
enter the details here: </span>
</div>

So what I need to do is : When control moves out of the field on which
auto_complete is enacted, and when user doesn''t select any option
listed
by auto_complete, I want to trigger a different action.

I tried to simulate this using text_field_with_auto_complete along with
observe_field :on => :change. It didn''t help, as onChange gets
triggered
on both cases: User selecting one option from the list and User entering
a new Name.

How can I solve this? Please suggest.

Regards,
SG
-- 
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On Sat, Jul 19, 2008 at 9:46 PM, Sandeep Gudibanda
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:
> I am using  text_field_with_auto_complete on a field. I update a part of
> my page if user chooses any particular option listed by auto_complete
> list. To do this I call and remote_function  with :after_update_element.
>
> But I also wanna update a part of my page if user doesn''t select
> anything from the autocomplete list.
>
> For EX: I want to Bring it to notice of the user that the "Name"
that he
> has not entered is not in our database. The div like below should be
> higlighted
>
> <div id ="error_box" class="error_box"
style="display:none">
> <span class="showtext bold"> Hospital entered was not
found. Please
> enter the details here: </span>
> </div>
>
> So what I need to do is : When control moves out of the field on which
> auto_complete is enacted, and when user doesn''t select any option
listed
> by auto_complete, I want to trigger a different action.
>
> I tried to simulate this using text_field_with_auto_complete along with
> observe_field :on => :change. It didn''t help, as onChange gets
triggered
> on both cases: User selecting one option from the list and User entering
> a new Name.
model_auto_completer
(http://agilewebdevelopment.com/plugins/model_auto_completer) needed
something similar. In this case the feature is to rollback to the last
valid completion if the user enters free text.

To accomplish this the textfield has a custom cache attribute. When
the user selects some completion the cache is reset in
:after_update_element. There''s an onblur handler that compares the
cache to the current value, and rollbacks if they are different. In
your case you''d show the warning.

That''s the basic idea, have a look at its implementation for further
details.

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On Sun, Jul 20, 2008 at 11:39 PM, Xavier Noria
<fxn-xlncskNFVEJBDgjK7y7TUQ@public.gmane.org> wrote:
> To accomplish this the textfield has a custom cache attribute. When
> the user selects some completion the cache is reset in
> :after_update_element. There''s an onblur handler
It is an onchange handler currently.

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Hi Vinay,

This shud help you,
getCommunity is the action in my controller, which gets called after 
update.
Also notice, that i get the id of chosen value by doing value.id , also 
events are captured in element and value. Hope this helps.

<%= text_field_with_auto_complete
''salary_review'',''company'', {},
:skip_style => true ,:frequency => 0.1, :indicator => 
''status-indicator'',
      :after_update_element => "function(element,value){" + 
remote_function(:update => ''salary_review_company'', :url
=> { :action =>
:getCommunity }, :with => "''id=''+ value.id ") +
"}" %>


If the user doesn''t choose any, i tried using observe_field. But it 
didn''t do too well, so i stopped using it.

Regards,
Sandeep G

Vinay wrote:
> Hi Sandeep,
> Can you show me how to call a remote_function
> with :after_update_element? I need almost the exact same
> functionality. Once a user chooses an option from the autocomplete
> list, i want to update a div with more information relating to the
> selected option. Also, did you find a solution for when the user
> doesnt select anything from the list?
> Also, how did you manage to parse the id of the selected option along
> with the form values? Mine is a belongs_to association and so i am
> using model_auto_completer for now. I hope you can help me with this.
> Here is my post on this 
>
http://groups.google.co.in/group/rubyonrails-talk/browse_thread/thread/5a91ddc41c1c44d9
> 
> On Jul 20, 12:46�am, Sandeep Gudibanda <rails-mailing-l...@andreas-
-- 
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Thanks Sandeep! will try this soon. "Events are captured in element
and value". I dont quite understand that. Can you please explain? I
dont know much of JS and am quite new to ROR too.
Ideally, I want a functionality like Gmail''s To address bar. It should
have autocomplete, find_or_create_by_email and an extra feature of a
live search after_update_element which updates a div with more info
about the contact using the email/name entered in the field. If the
entered string does not match any results, it should validate for an
email address and create a contact using that info alone. I know its a
tall ask :).. but things are falling into place and I just thought it
would be helpful to me if you had any tips since you seem to have done
something similar to an extent. Thanks again!

On Oct 6, 12:26 pm, Sandeep Gudibanda <rails-mailing-l...@andreas-
s.net> wrote:
> Hi Vinay,
>
> This shud help you,
> getCommunity is the action in my controller, which gets called after
> update.
> Also notice, that i get the id of chosen value by doing value.id , also
> events are captured in element and value. Hope this helps.
>
> <%= text_field_with_auto_complete
''salary_review'',''company'', {},
> :skip_style => true ,:frequency => 0.1, :indicator =>
> ''status-indicator'',
>       :after_update_element => "function(element,value){" +
> remote_function(:update => ''salary_review_company'',
:url => { :action =>
> :getCommunity }, :with => "''id=''+ value.id
") + "}" %>
>
> If the user doesn''t choose any, i tried using observe_field. But
it
> didn''t do too well, so i stopped using it.
>
> Regards,
> Sandeep G
>
> Vinay wrote:
> > Hi Sandeep,
> > Can you show me how to call a remote_function
> > with :after_update_element? I need almost the exact same
> > functionality. Once a user chooses an option from the autocomplete
> > list, i want to update a div with more information relating to the
> > selected option. Also, did you find a solution for when the user
> > doesnt select anything from the list?
> > Also, how did you manage to parse the id of the selected option along
> > with the form values? Mine is a belongs_to association and so i am
> > using model_auto_completer for now. I hope you can help me with this.
> > Here is my post on this
>
>http://groups.google.co.in/group/rubyonrails-talk/browse_thread/threa...
>
> > On Jul 20, 12:46 am, Sandeep Gudibanda <rails-mailing-l...@andreas-
>
> --
> Posted viahttp://www.ruby-forum.com/.
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