Getting Data From A Select Menu


I am using a select menu to allow people to pick an item and be taken to
a new page containing that item’s data. Pretty straightforward stuff.
Except that I cannot quite figure out how to do this in Rails.

I do not understand how to grab the variable from the select menu. With
the code I am using, I cannot get the data into the mysql query.

Can someone point me in the right direction?

This is the code for the select menu (it uses an array of arrays in the
model file):

<%= start_form_tag :action => ‘history’ %>

<%= options = [["Select client", ""]] + Notification::CLIENTS

select(“notification”, “client”, options) %>

<%= submit_tag "Select" %>

<%= end_form_tag %>

This is the code in the controller:

def history


@client = (params[:notification])

@notifications = Notification.find(:all, :conditions => ["client =

?", @client])




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This is the code straight from my app.

function initSelect(){

var theSelect = document.getElementById(“event_state_id”);

theSelect.changed = false;
theSelect.onchange = selectChanged;

return true;

function selectChanged(theElement){
var theSelect;

if (theElement && theElement.value) {
theSelect = theElement;
theSelect = this;

try {xhr = new ActiveXObject(“Msxml2.XMLHTTP”); } catch (e) {
try {xhr = new ActiveXObject(“Microsoft.XMLHTTP”);} catch (E) {xhr =

if (!xhr && typeof XMLHttpRequest != ‘undefined’) {xhr = new
XMLHttpRequest();}“GET”, “url/”+theSelect.value);
xhr.onreadystatechange=function() {
if (xhr.readyState != 4) return;
target = document.getElementById(“event_city_custom”);
target.innerHTML = xhr.responseText;

return true;

State: <%= select( "event", "state_id", State.all_with_please_select_option) %>


-=- Neeraj



I’m a noob, but I think you need to change
@client = (params[:notification])
@client = @params[‘notification’][‘client’]

The parameter is in a multi-dimension hash.

I hope this helps,
Brent Middaugh