Rails has_many association issue in controller - ruby-on-rails

Question

I have a company model designed with the devise , and when the company is logged in the company can create the event so that the company has many events and events belong to company the events controller is given as
class EventsController < ApplicationController
before_action :company_signed_in?
def index
#events = Event.all
end
def new
#event = current_company.events.build
end
def create
#event = current_company.events.build(event_params)
if #event.save
flash[:success] = "Profile saved"
redirect_to company_events_path(current_company)
else
flash[:error] = "Error"
render :new
end
end
def show
#event = current_company.events.where(id: params[:id]).first
end
private
def event_params
params.require(:event).permit(:name, :company_id, :category_id, :event_date, :event_info, :place, :event_avatar)
end
end
and the company model has
has_many :events
and the event model has
belongs_to :company
the new view of the event has
<%= form_for [current_company, #event] do |f| %>
<%= f.text_field :name %>
<% end %>
and the show view has
<%= #event.name %>
my routes are
resources :companies do
resource :company_profile, :events
end
now what i want to do is the current company can create an event and when the event is created it should be redirected to the show page of the event just produced
i need to create an event so that i can get the url like companies/3/events/3 this type of url
issue is when i am going to the show action i am getting undefined method 'name' Please help ! and in the log i have
Started GET "/companies/3/events" for 127.0.0.1 at 2015-07-30 16:41:54 +0530
Processing by EventsController#show as HTML
Parameters: {"company_id"=>"3"}
Company Load (0.3ms) SELECT `companies`.* FROM `companies` WHERE `companies`.`id` = 3 ORDER BY `companies`.`id` ASC LIMIT 1
CompanyProfile Load (0.3ms) SELECT `company_profiles`.* FROM `company_profiles` WHERE `company_profiles`.`company_id` = 3 LIMIT 1
Event Load (0.3ms) SELECT `events`.* FROM `events` WHERE `events`.`company_id` = 3 AND `events`.`id` IS NULL ORDER BY `events`.`id` ASC LIMIT 1
Rendered events/show.html.erb within layouts/application (12.5ms)
Completed 500 Internal Server Error in 32ms (ActiveRecord: 0.8ms)
ActionView::Template::Error (undefined method `name' for nil:NilClass):
1:
2: <label>Name : </label>
3: <%= #event.name %>
4: <%= #event.event_date %></br></br>
5: <label>Age : </label>
6: <%= #event.place %></br></br>
app/views/events/show.html.erb:3:in `_app_views_events_show_html_erb__541678279__634038278'

Answer 1

you are not passing id of event to the show action. only company_id is passed as shown in parameters
Parameters: {"company_id"=>"3"}
so when it queries in the event with id NULL it didnt find any event and hence null.name is crashing
Either pass id of event to the show action. or for testing you should do this
def show
#event = current_company.events.first
end

Answer 2

You should try the below method and see if it works:
def show
#event = Event.find(params[:id])
end