ruby on rails 3 - unknown attribute X, but X is not in argument of update_attributes in rails3 -

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i trying set object's field in form accept_nested_attributes. in controller when :

@device.update_attributes(params[:device])

i :

activerecord::unknownattributeerror "unknown attribute: device_id"

but device_id, attribute of other non-related model, not included in params. params following.

{"utf8"=>"✓",  "authenticity_token"=>"xja5gcnrutpzn2c4wkesx0ko6snezh09kwmpq0/0hys=",  "id"=>"5",  "device"=>{"routes_attributes"=>{"0"=>{"name"=>"",  "origin_attributes"=>{"name"=>"",  "lat"=>"",  "lng"=>""},  "destination_attributes"=>{"name"=>"",  "lat"=>"",  "lng"=>""}}}},  "commit"=>"create device"}

what can thought cause. here codes.

view

<%= form_for @device, :url => {:action => "do_compose"}, :method => :post |f| %>   <div class="field">      <%= select_tag(:id, options_for_select( device.all.collect{|d| [d.name + "/" + d.get_driver().name, d.id] } ),:prompt=>"select device") %>                                    </div>    <div class="field">     <%= render partial:"routes/nested_routes_form", locals: {route_object:@device.get_route(), parent_form:f} %>   </div>   <div class="actions">     <%= f.submit %>   </div> <% end %>

controller

  def do_compose     @device = device.find(params[:id])     respond_to |format|       if @device.update_attributes(params[:device])         format.html { redirect_to @device, notice: 'device updated.' }       else         format.html { render action: comopse }       end     end   end

model 

  class route < activerecord::base     attr_accessible :name, :destination_attributes, :origin_attributes, :waypoints, :driver_id     has_many :waypoints     has_one :origin, :class_name=>"origin"     has_one :destination, :class_name=>"destination"     belongs_to :device     accepts_nested_attributes_for :origin, :destination, :waypoints   end    class device < activerecord::base     attr_accessible :id, :name, :password     attr_accessible :device_driver_bind_attributes, :drivers_attributes, :routes_attributes, :current_location_attributes     has_many :drivers, through: :device_driver_bind     has_many :device_driver_bind, dependent: :destroy     has_one :current_location, :class_name => "currentlocation"     has_many :routes     has_many :origins, through: :routes     has_many :destinations, through: :routes     has_many :waypoints, through: :routes     accepts_nested_attributes_for :routes, :current_location, :device_driver_bind   end

this has problem in select_tag, try this:

<%= f.select(:id, options_for_select( device.all.collect{|d| [d.name + "/" + d.get_driver().name, d.id] } ),:prompt=>"select device") %>

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