Help with RJS please

[Jason Patrick Agujo]

what i want to do is make the company field show up only when the role selected is 'Client'

here are the codes that i have:
VIEW
<p>
    <label>Role</label><br/>
    <%= select :role, :role, Role.all.collect{|r| [r.name,r.name]}, :include_blank => true %>
</p>

<%= observe_field "role_role",{ :function=>"just_test" }%>

<p id="client_id_space">
    <label for="client_id">Clients Account</label><br/>
    <%= f.select :client_id, Client.all.collect{|r| [r.company_name,r.id]},  :include_blank => true %>
</p>

<script type="text/javascript">
    Element.hide('client_id_space');
   
    function just_test(p_role){
        page.alert('Inside function!');
    }
</script>

right now im stuck in trying to pass the data to go inside the defines JS "just_test". but when i move the alert to the observe_field under position it works. can you guys point me in the right direction please.

thank you for taking the time to read this.

[Evan Sagge]

This line: <%= observe_field "role_role",{ :function=>"just_test" }%>

will actually generate the following javascript:

new Form.Element.Observer('role_role', 1, function(element, value)
{ just_test }) // JS syntax error!

I think you wanted to do this instead

<%= observe_field "role_role",{ :function=>"just_test(value)" }%>

so it will generate this:

new Form.Element.Observer('role_role', 1, function(element, value)
{ just_test(value) })

The observe_field method wraps the JS code you specify in :function in
its own function(element, value) {}, with the same parameter names.

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[Jason Patrick Agujo]

i got to try that also, this is what i ended up with:

<%= observe_field("role_role",{:function=>"just_test($('role_role').value)"}) %>

im able to get to get the value of the selected data from roel through:

<%= observe_field("role_role",{:function=>"alert($('role_role').value)"}) %>

but when i replace 'alert' with 'just_test' it wont even do the:

page.alert('inside function!');

im not sure if im breaking a rule or what but its not giving that alert. if that alert shows up then that means im inside the actual JS that i made.

[Evan Sagge]

Like I mentioned, if you just put "just_test", you will get: function(element, value){ just_test }

You would want it to result to: function(element, value){ just_test(value) }, so use this instead:

<%= observe_field("role_role",{:function=>"just_test(value)"}) %>