Can't get user_id in database after Ajax call - ruby-on-rails

Question

In javascript I do an ajax call to the create function of deliveries_controller. This puts a new Delivery in the database with a product and quantity. I also try to put the current_user as user_id in the database, but for some reason it stays nil in the database.
My ajax call:
$.ajax({
type: "POST",
url: "/deliveries",
data: { delivery: {ingredient: "meel", quantity: "800", scenario_id: "3"} },
success: function(){
alert('Success!');
},
error: function(){
alert('No success');
}
});
I just pass some dummy data to test it all out.
and my deliveries_controller:
class DeliveriesController < ApplicationController
protect_from_forgery
def index
#storages = Storage.where(user_id: current_user)
end
def addQuantity
#storage = Storage.where(user_id: current_user.id)
#storage.update_all ("quantity = (quantity+200)")
redirect_to deliveries_url
end
def create
#delivery = Delivery.new(delivery_params)
respond_to do |format|
if #delivery.save
format.html do
render :nothing => true
end
format.json { render json: #delivery.to_json }
else
format.html { render :nothing => true} ## Specify the format in which you are rendering "new" page
format.json { render json: #delivery.errors } ## You might want to specify a json format as well
end
end
end
private
def delivery_params
params.require(:delivery).permit(:user_id, :ingredient, :quantity, :scenario_id)
end
end
New entries are created in the database, but whichever way I try to pass the user_id as param it isn't saved in the database.
I tried it like:
#delivery = Delivery.new(delivery_params, :user_id => current_user),
#user_id = current_user
#delivery = Delivery.new(delivery_params, #user_id)
and
params.require(:delivery).permit(:user_id, :ingredient, :quantity, :scenario_id).merge(user_id: current_user)
log:
Started POST "/deliveries" for 127.0.0.1 at 2014-11-03 12:59:37 +0100
Processing by DeliveriesController#create as */*
Parameters: {"delivery"=>{"ingredient"=>"meel", "quantity"=>"800", "scenario_id"=>"3"}}
Can't verify CSRF token authenticity
User Load (0.2ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = 'da39a3ee5e6b4b0d3255bfef95601890afd80709' LIMIT 1
CACHE (0.0ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = 'da39a3ee5e6b4b0d3255bfef95601890afd80709' LIMIT 1
(0.0ms) begin transaction
SQL (0.2ms) INSERT INTO "deliveries" ("created_at", "ingredient", "quantity", "scenario_id", "updated_at") VALUES (?, ?, ?, ?, ?) [["created_at", "2014-11-03 11:59:37.253274"], ["ingredient", "meel"], ["quantity", 800], ["scenario_id", 3], ["updated_at", "2014-11-03 11:59:37.253274"]]
(12.5ms) commit transaction
Rendered text template (0.0ms)
Completed 200 OK in 24ms (Views: 0.8ms | ActiveRecord: 13.1ms)
but the user_id for Delivery stays nil. How would I pass the user_id from the current_user so it's saved in the database with the json I retrieve from the ajax call?
Thanks in advance
EDIT:
I fixed it the following way:
I send json data to javascript with content_tag:
= content_tag(:div,"", id: "storages", data:{url: Storage.where(user_id: current_user)})
this data is handled, and the user_id is suddenly accepted :)
thanks for the help!

Answer 1

Try this instead
#delivery = current_user.deliveries.new(delivery_params)

Answer 2

It should be
#delivery = Delivery.new(delivery_params.merge(user: current_user))
OR
#delivery = Delivery.new(delivery_params)
#delivery.user = current_user

Answer 3

Put current user_id on hidden field on HTML and send it with ajax like other params