Rails submit create action succeeding - ruby-on-rails

Question

I am learning ruby rails and i have a #create problem (i think)
when i am creating a new "stat" with form_for, once i press submit i get redirect to index.html.erb (as written in my controller) but there is no data apart from the id (even if i chose my self an id, it get generated by rails)
the weird part is, if i edit the new entry (where everything is blank but :ID) data are saved.
I hope i am clear enough it's my first question on stackoverflow
Thx a lot !
My controller : stats
def new
#stat = Stat.new
end
def create
#stat = Stat.new
if #stat.save
redirect_to "/stats"
flash[:notice] = "work"
else
render "new"
flash[:notice] = "didn't work"
end
end
the log for create action
tarted POST "/stats" for 92.133.16.18 at 2015-06-09 12:09:11 +0000
Processing by StatsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"bCV+ymN4NxuMM6441OLaRyu/cuLXIcX5fu1g/rG+gqg=", "stat"=>{"id"=>"", "cc"=>"ok", "ct"=>"ok", "force"=>"ok", "endurance"=>"ok", "blessure"=>"ok", "init"=>"ok", "attaque"=>"ok", "ld"=>"ok", "sv"=>"ok"}, "commit"=>"Save"}
(0.1ms) begin transaction
SQL (0.3ms) INSERT INTO "stats" ("created_at", "updated_at") VALUES (?, ?) [["created_at", "2015-06-09 12:09:11.561787"], ["updated_at", "2015-06-09 12:09:11.561787"]]
(10.8ms) commit transaction
Redirected to https://codex-bobix.c9.io/stats
Completed 302 Found in 16ms (ActiveRecord: 11.2ms)
the log for the update action
Started PATCH "/stats/11" for 92.133.16.18 at 2015-06-09 12:04:09 +0000
Processing by StatsController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"bCV+ymN4NxuMM6441OLaRyu/cuLXIcX5fu1g/rG+gqg=", "stat"=>{"id"=>"11", "statname"=>"tt", "cc"=>"tt", "ct"=>"t", "force"=>"ttt", "endurance"=>"tt", "blessure"=>"t", "init"=>"ttt", "attaque"=>"tt", "ld"=>"ttt", "sv"=>"tt"}, "commit"=>"save", "id"=>"11"}
Stat Load (0.2ms) SELECT "stats".* FROM "stats" WHERE "stats"."id" = ? LIMIT 1 [["id", 11]]
(0.1ms) begin transaction
SQL (0.5ms) UPDATE "stats" SET "attaque" = ?, "blessure" = ?, "cc" = ?, "ct" = ?, "endurance" = ?, "force" = ?, "init" = ?, "ld" = ?, "statname" = ?, "sv" = ?, "updated_at" = ? WHERE "stats"."id" = 11 [["attaque", "tt"], ["blessure", "t"], ["cc", "tt"], ["ct", "t"], ["endurance", "tt"], ["force", "ttt"], ["init", "ttt"], ["ld", "ttt"], ["statname", "tt"], ["sv", "tt"], ["updated_at", "2015-06-09 12:04:09.051306"]]
(15.9ms) commit transaction
Redirected to https://codex-bobix.c9.io/stats
Completed 302 Found in 25ms (ActiveRecord: 16.8ms)
.
class StatsController < ApplicationController
def index
#stats = Stat.all
end
def show
#stat = Stat.find(params[:id])
#units = #stat.units
end
def new
#stat = Stat.new
end
def edit
#stat = Stat.find(params[:id])
end
def update
#stat = Stat.find(params[:id])
#stat.update(stat_params)
redirect_to "/stats"
flash[:notice] = "work"
end
def new
#stat = Stat.new
end
def create
#stat = Stat.new
if #stat.save
redirect_to "/stats"
flash[:notice] = "work"
else
render "new"
flash[:notice] = "didn't work"
end
end
private
def stat_params
params.require(:stat).permit(:cc, :ct, :force, :endurance, :blessure, :init, :attaque, :ld, :sv, :id, :statname)
end
end

Answer 1

In your create action you are not passing any arguments for your Stat, it should be something like:
class StatsController < ApplicationController
def create
#stat = Stat.new stat_params
# ...
end
private
def stat_params
params.require(:stat).permit(:id, :cc, :ct, :force, :endurance, :blessure, :init, :attaque, :ld, :sv)
end
end
Hope that helps!

Answer 2

When you say #stat = Stat.new, you're instantiating a new Stat object with no assigned attributes, and then saving that. As such, no matter what parameters you pass to the controller, you will only have the fields which are automatically generated (in this case ID). What you need to do is take the parameters and create a new object from them (i.e. #stat = Stat.new( stat_params )).
Since you have a stat_params method defined at the bottom of your controller (as is generally the case by default when you generate a scaffold), then that line of code alone will fix it. Essentially all you need to do is grab the params for the stat (submitted from new), turn them into a hash, and put them into the Stat.new( ... ) statement.