Rails - Mar 2006 - how to add onchange javascript event to select field

I would like to add javascript ''onChange'' event handling for a
select
field, such as
<%= collection_select("job", "client_id" , @clients,
"id", "name") %>
with onChange="xxx"

Anyone know how to make this work?
Thank you,
Scott


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Scott Claerhout wrote:
> I would like to add javascript ''onChange'' event handling
for a select
> field, such as
> <%= collection_select("job", "client_id" , @clients,
"id", "name") %>
> with onChange="xxx"
>
> Anyone know how to make this work?
>   
http://rubyonrails.org/api/classes/ActionView/Helpers/FormOptionsHelper.html#M000352

The full API is:

*collection_select*(object, method, collection, value_method, 
text_method, options = {}, html_options = {})

Just add :onchange => "xxx" to the html_options and you are set.

Berin,
Thank you for responding.  I cannot get the syntax correct.  Would it be 
something like:
<%= collection_select("job", "client_id" , @clients,
"id", "name",
html_options = {:onchange => "alert(''hello'')"}
)%>

or

<%= collection_select("job", "client_id" , @clients,
"id", "name",
{:onchange => "alert(''hello'')"} )%>



Berin Loritsch wrote:
> Scott Claerhout wrote:
>> I would like to add javascript ''onChange'' event
handling for a select
>> field, such as
>> <%= collection_select("job", "client_id" ,
@clients, "id", "name") %>
>> with onChange="xxx"
>>
>> Anyone know how to make this work?
>>   
> 
>
http://rubyonrails.org/api/classes/ActionView/Helpers/FormOptionsHelper.html#M000352
> 
> The full API is:
> 
> *collection_select*(object, method, collection, value_method,
> text_method, options = {}, html_options = {})
> 
> Just add :onchange => "xxx" to the html_options and you are
set.

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Posted via http://www.ruby-forum.com/.

Scott Claerhout wrote:
> Berin,
> Thank you for responding.  I cannot get the syntax correct.  Would it be 
> something like:
> <%= collection_select("job", "client_id" , @clients,
"id", "name",
> html_options = {:onchange =>
"alert(''hello'')"} )%>
>
> or
>
> <%= collection_select("job", "client_id" , @clients,
"id", "name",
> {:onchange => "alert(''hello'')"} )%>
>   
You have to get past the "options" parameter before you can use 
"html_options"

<%= collection_select("job", "client_id" , @clients,
"id", "name", {},
{:onchange => "alert(''hello'')"} )%>

>
>
> Berin Loritsch wrote:
>   
>> Scott Claerhout wrote:
>>     
>>> I would like to add javascript ''onChange'' event
handling for a select
>>> field, such as
>>> <%= collection_select("job", "client_id" ,
@clients, "id", "name") %>
>>> with onChange="xxx"
>>>
>>> Anyone know how to make this work?
>>>   
>>>       
>>
http://rubyonrails.org/api/classes/ActionView/Helpers/FormOptionsHelper.html#M000352
>>
>> The full API is:
>>
>> *collection_select*(object, method, collection, value_method,
>> text_method, options = {}, html_options = {})
>>
>> Just add :onchange => "xxx" to the html_options and you
are set.
>>     
>
>
>

Berin,
Thank you, that worked!
Scott

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know if there is a way to know the id or the customer has selected??

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this will give you the selected text if you want it.  you can probably 
figure out what you need from this example.

var grain = $(''select#id_of_my_element
option:selected'').text();

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