RE: Update multiple fields in a form on change event

Rails
1

Hi Damon,

Do you have some code to show? That would make things a bit easier to
comment on…

Best regards,
torben

2

Torben–

Thanks for the reply.
I do have some code that I posted yesterday in another thread, but would
love to post here again for you :slight_smile:

Main View

Customer Address:
Ship Via:
  Credit Limit:
Current Bal:
<%= observe_field(:purchase_order_customer_id, :update => :po_customer_address, :url => { :action => :get_customer_address }, :with => "'customer_id='+escape(value)")%> <%= observe_field(:purchase_order_customer_id, :update => :po_credit_limit, :url => { :action => :get_customer_credit_limit }, :with => "'customer_id='+escape(value)")%>

Controller

def get_customer_address
form_customer_id = params[:customer_id]
@found_customer = Customer.find(form_customer_id)
end

def get_customer_credit_limit
form_customer_id = params[:customer_id]
@found_customer_limit = Customer.find(form_customer_id)
end

Returning Views

get_customer_address.rhtml
<%= text_field(“purchase_order”, “customer_address”, :readonly =>
“readonly”, “size” => 25, :value => @found_customer.address) %>

<%= text_field(“purchase_order”, “customer_city”, :readonly =>
“readonly”,
“size” => 10, :value => @found_customer.city) %>
<%= text_field(“purchase_order”, “customer_state”, :readonly =>
“readonly”,
“size” => 2, :value => @found_customer.state) %>
<%= text_field(“purchase_order”, “customer_postal_code”, :readonly =>
“readonly”, “size” => 5, :value => @found_customer.postal_code) %>

get_customer_credit_limit.rhtml
<%= text_field(“purchase_order”, “customer_credit_limit”, :readonly =>
“readonly”, :value => @found_customer_limit.credit_limit) %>

Thanks!
~damon

3

Hi Damon

I can’t say that I have tried the thing you want, but I had a look in
the “Agile Development”-book that holds a tip I think might be usable.

The tip goes, that you return a bunch of generated javascript that you
evaluate in the client.

So, you will do something like:

observe_field(:purchase_order_customer_id,
:complete => “eval(request.responseText)”,
:url => { :action => :get_all_customer_info },
:with => “‘customer_id=’+escape(value)”)

In the template, you generate the javascript that updates all the
fields:

document.getElementById(“po_customer_address”).value = ‘<%=
@found_customer.address %>’;
document.getElementById(“po_credit_limit”).value = ‘<%=
@found_customer_limit.credit_limit %>’;

and so on.

Hope this helps…

Torben

4

El Jueves 17 Noviembre 2005 19:20, Torben
Wölm escribió:> observe_field(:purchase_order_customer_id,

@found_customer_limit.credit_limit %>';
I think that you have an “update_element_function”[1] to do such a
thing.

Good luck!

[1]
http://api.rubyonrails.org/classes/ActionView/Helpers/JavaScriptHelper.html#M000430

–
o) Imobach González Sosa
//\ email: imobachgs at step dot es
V/_ jid: osoh at jabberes dot org
url: banot.net - banot Resources and Information.
blog: http://devnull.blogs.banot.net/

http://www.step.es/

–
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5

I think that you have an “update_element_function”[1] to do such a thing.

Good luck!

[1]
ActionView::Helpers::JavaScriptHelper

Ahh - sweet. The documentation even holds an example of – how to make
multiple updates!

Thanks,
Torben

6

Thanks for the replies Torben and Imobach.
I did attempt to implement the update_element_function however, the
action
it was looking for was an onSubmit() and I need the form to update on an
onEvent() action.

I will look again and see if there is a way to set which action the
update_element_function looks for.

Thanks again,
~damon

7

Solved!!!

The examples and hints given by Torben worked beautifully! Thanks!

Here is my view now:

Customer Address: Shipper Address:
  Credit Limit: Current Bal: Customer Pickup:</label <%= check_box_tag("po_customer_pickup", value="1", checked=false) %>

<%= observe_field(:purchase_order_customer_id,
:complete => “eval(request.responseText)”,
:url => { :action => :get_customer_info },
:with => “‘customer_id=’+escape(value)”)%>

My controller just finds the specified customer record designated by
customer_id.

Then the get_customer_info.rhtml looks like this:

document.getElementById(“po_customer_address”).value = ‘<%=
@found_customer.address %>’;
document.getElementById(“po_customer_city”).value = ‘<%=
@found_customer.city %>’;
document.getElementById(“po_customer_state”).value = ‘<%=
@found_customer.state %>’;
document.getElementById(“po_customer_postal_code”).value = ‘<%=
@found_customer.postal_code %>’;
document.getElementById(“po_credit_limit”).value = ‘<%=
@found_customer.credit_limit %>’;
document.getElementById(“po_current_balance”).value = ‘<%=
@found_customer.inv_balance %>’;

Thanks again!