Ajax observer sending weird param

Rails
1

Hey guys,
I’m trying to use Ruby on Rails w/ Ajax… I’m getting a funky little
problem. So I’ve got an observer on a text field called username and I’m
trying to just check to see if the username is already in the DB or not,
then display the appropriate message. Here’s the form part in my RHTML
file:

<%= text_field_tag :username %>
<%= observe_field(:username, :frequency => 0.25,:update =>
:div_username,:url => { :action => :checkUsername }) %>

…my controller

def checkUsername
if(User.checkUsername(params[:username])==1)
render :text => “#{params[:username]} is not available”
else
render :text => “available”
end
end

The problem is that params[:username] is never set!! When I look at
whats going on the backend, it shows me that username I typed in is the
param name! For example, if I typed in “jsmith” into the username field,
it sends param[:jsmith]=>nil to the controller. I’m really confused, if
anyone could help me figure this out, I’d really appreciate it!

Thanks,

  • Jeff
2

Hi Jeff M.

There is with option to observefield There you have to pass username
like

<%= observe_field(:username, :frequency => 0.25,:update =>
:div_username,:url => { :action => :checkUsername }, :with =>
“‘username=’ + $(‘username’).value”) %>

 Now you can access params[:username] from controller as you do

Sijo

3

Thanks for the quick and very helpful reply, Sijo! Got it working :slight_smile: