Controller not passing in values from the from to the create method - ruby-on-rails

Question

My Create controller passes in the for the child of a nested resource as null instead of passing the values i've just inputed into the form.
Here is my code
Routes:
resources :trips do
resources :pilgrims
end
Models:
Trip:
class Trip < ActiveRecord::Base
has_many :pilgrims
accepts_nested_attributes_for :pilgrims, :allow_destroy => true
attr_accessible :end_date, :leader_id, :name, :start_date, :pilgrim_attributes
end
Pilgrim:
class Pilgrim < ActiveRecord::Base
belongs_to :trip
attr_accessible :pilgrim_id, :surname, :name, :middle, :aka, :prefix, :address, :city, :state, :zip, :email, :telephone, :nationality, :date_of_birth, :passport_number, :expiration, :jordan, :room, :price, :status, :trip_id
end
My Pilgrim controller:
def new
#trip = Trip.find(params[:trip_id])
#pilgrim = Pilgrim.new
end
def create
#trip = Trip.find(params[:trip_id])
#pilgrim = #trip.pilgrims.build(params[:pilgrim])
if #pilgrim.save
flash[:notice] = "The <b>#{ #pilgrim.name }</b> has been created successfully."
redirect_to(trip_pilgrims_path, :notice => "The <b>#{ #pilgrim.name }</b> ship has been saved successfully.")
else
render(:new, :error => #pilgrim.errors)
end
end
Link to a gist with my form code Form
The routes seem to be correct, when i click on new_trip_pilgrim_path(#trip) it does point to trips/:trip_id/pilgrims/new and loads the new pilgrim form.
However when i click save on the form it redirects me to the route trips/3/pilgrims but shows the new pilgrim form saying all required fields were left blank.
This is what displays in the log.
Started POST "/trips/3/pilgrims" for 127.0.0.1 at 2013-01-19 22:12:06 -0800
Processing by PilgrimsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"kOE06m3DNax43BOLYZ6t1lS7/T4wOWb2xM8m/mlQzvA=", "commit"=>"Create Pilgrim", "trip_id"=>"3"}
Trip Load (0.3ms) SELECT `trips`.* FROM `trips` WHERE `trips`.`id` = 3 LIMIT 1
(0.2ms) BEGIN
(0.2ms) ROLLBACK
Pilgrim Load (0.4ms) SELECT `pilgrims`.* FROM `pilgrims` WHERE `pilgrims`.`trip_id` = 3
Rendered pilgrims/_form.html.erb (36.4ms)
Rendered pilgrims/new.html.erb within layouts/application (37.2ms)
User Load (0.2ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 2 LIMIT 1
Trip Load (0.3ms) SELECT `trips`.* FROM `trips`
Completed 200 OK in 244ms (Views: 102.5ms | ActiveRecord: 11.2ms)
What is going on with the Pilgrim create controller?

Answer 1

You are trying to create a new pilgrim object by calling
#pilgrim = #trip.pilgrims.build(params[:pilgrim])
in the PilgrimsController. But Parameters: {"utf8"=>"✓", "authenticity_token"=>"kOE06m3DNax43BOLYZ6t1lS7/T4wOWb2xM8m/mlQzvA=", "commit"=>"Create Pilgrim", "trip_id"=>"3"} Doesn't contain any pilgrim paramters. So the problem is with the form used for creating a new pilgrim