rails strong parameters not work correctly - ruby-on-rails

Question

i have a rails app. i have strange problem in saving form
this is my ticket model .
class Ticket < ApplicationRecord
belongs_to :user
has_many :ticketissues , inverse_of: :ticket
accepts_nested_attributes_for :ticketissues, :reject_if => lambda { |a| a[:body].blank? }
end
this is ticketisue model
class Ticketissue < ApplicationRecord
belongs_to :user
belongs_to :ticket
validates :body, presence: true
end
this is ticket controller
class TicketsController < ApplicationController
before_action :set_ticket, only: [:show, :edit, :update, :destroy]
# GET /tickets
# GET /tickets.json
def index
#tickets = Ticket.all
end
# GET /tickets/1
# GET /tickets/1.json
def show
end
# GET /tickets/new
def new
#ticket = Ticket.new
end
# GET /tickets/1/edit
def edit
end
# POST /tickets
# POST /tickets.json
def create
#ticket = Ticket.new(ticket_params)
#ticket.user_id = current_user.id
#ticket.ticketissues.build
respond_to do |format|
if #ticket.save
format.html { redirect_to #ticket, notice: 'Ticket was successfully created.' }
format.json { render :show, status: :created, location: #ticket }
else
format.html { render :new }
format.json { render json: #ticket.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /tickets/1
# PATCH/PUT /tickets/1.json
def update
respond_to do |format|
if #ticket.update(ticket_params)
format.html { redirect_to #ticket, notice: 'Ticket was successfully updated.' }
format.json { render :show, status: :ok, location: #ticket }
else
format.html { render :edit }
format.json { render json: #ticket.errors, status: :unprocessable_entity }
end
end
end
# DELETE /tickets/1
# DELETE /tickets/1.json
def destroy
#ticket.destroy
respond_to do |format|
format.html { redirect_to tickets_url, notice: 'Ticket was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_ticket
#ticket = Ticket.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def ticket_params
params.require(:ticket).permit(:subject, :subsubject, :user_id, ticketissues_attributes: [
:body, :id, :_destroy] )
#params.require(:ticket).permit!
end
end
and my view is like this
<%= f.input :subject , collection: [ "تغییر اطلاعات کسب و کار",
"تغییر اطلاعات یک کوپن",
"سایر موارد"] %>
<%= f.input :subsubject %>
<!-- <%= f.association :user %> -->
</div>
<%= f.simple_fields_for :ticketissue do |p| %>
<%= p.input :body %>
<% end %>
<div class="form-actions">
<%= f.button :submit %>
</div>
<% end %>
but when i want to create a ticket , form will not save to database
and i get this error:
Started POST "/tickets" for 127.0.0.1 at 2017-04-11 23:52:33 +0430
Processing by TicketsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"fsl6nTe0PjmBKpeuh16BRFlYOw0MB93LEYDVEAl6TtT/uu/LwGTA0P2q0bRxIxBUqHqZINXHntrZLt7MuCG84Q==", "ticket"=>{"subject"=>"تغییر اطلاعات کسب و کار", "subsubject"=>"lk", "ticketissue"=>{"body"=>"lkjkjkjkjkkjkj"}}, "commit"=>"Create Ticket"}
Unpermitted parameter: ticketissue
but when i use console and this command:
Ticket.create(subject: 'test' , subsubject: 'ticket test' , ticketissues_attributes: [{body: "[some thing" }] )
every things work fines and all data save.
tanks for read and help.

Answer 1

You must use the plural here
= f.simple_fields_for :ticketissues do |p|