Model update/create not saved to params[]

I'm trying to build a form to create or update a model using remote call. When I submit the form, I see that the changes aren't applied. I started the server with --debugger and noticed the params hash doesn't receive the updates. My code for update form is this:

# /app/views/vendors/_vendor.html.erb # This is in the partial b/c there's also an option to render a # read only view as a table row with vendor_nnn as its id

<tr id="active_vendor"> <% if edit_mode -%>   <% form_for @vendor, :vendor, { :action => 'update',                                   :id => @vendor } do |f| -%>     <%= f.text_field :name %>     <%= f.text_field :location %>     <%= link_to_remote 'save', :url => { :action => 'update',                                          :id => @vendor } %>   <% end -%> <% end -%> </tr>

# vendors_controller.rb

def update   @vendor = Vendor.find(params[:id])   if @vendor.update_attributes(params[:vendor])     flash[:notice] = "Vendor <b>#{}</b> was successfully updated."     respond_to do |format|       format.html { redirect_to vendors_path }       format.js     end   end end

# update.js.rjs -- this is just to id = params[:id]

# this puts page.replace "vendor_#{id}",              :partial => 'vendor',              :object => Vendor.find(id),              :locals => { :edit_mode => false }

page.replace_html 'flasher', params[:vendor] unless params[:vendor].blank? page.remove "active_vendor"

When submitting the form it just renders the previous data, without the changes.

You will want to use remote_form_for instead of form_for.

A bit of unasked-for advice:

Write your tests or specs and run them all the time. Make sure
everything works without the ajax. Tail your logs and watch the
actions invoked and parameters passed.

Hope this helps.