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undefined method `company' for nil:NilClass

I keep receving an error on my home page saying
'undefined method `company' for nil:NilClass'
for the first line of the following code displayed below. I am not really sure on how to fix this. I have two Controllers for both companies and customers because I am creating a two-sided marketplace.
When the user clicks the logo at the top instead of being redirected to the welcome page, the login page is being rendered since the home page is the root_path but I am using devise for before_action authenticate is being used.
<% if((current_user.company) || (current_user.customer)) %>
<%= render 'pages/welcome' %>
<% else %>
<% if current_user.is_company %>
<%= render 'companies/form', company: #company%>
<% else %>
Here is the home.html.erb file with the code which is the root_path
<% if((current_user.company) || (current_user.customer)) %>
<%= render 'pages/welcome' %>
<% else %>
<% if current_user.is_company %>
<%= render 'companies/form', company: #company%>
<% else %>
<%= render 'customers/form', customer: #customer%>
<% end %>
<% end %>
Here is my companiesController
class CompaniesController < ApplicationController
before_action :set_company, only: [:show, :edit, :update, :destroy]
def index
#companies = Company.all
end
# GET /companies/1
# GET /companies/1.json
def show
#company = Company.find(params[:company_id])
end
# GET /companies/new
def new
#company = Company.new
end
# GET /companies/1/edit
def edit
end
# POST /companies
# POST /companies.json
def create
#company = Company.new(company_params)
respond_to do |format|
if #company.save
format.html { redirect_to #company, notice: 'Company was successfully created.' }
format.json { render :show, status: :created, location: #company }
else
format.html { render :new }
format.json { render json: #company.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /companies/1
# PATCH/PUT /companies/1.json
def update
respond_to do |format|
if #company.update(company_params)
format.html { redirect_to #company, notice: 'Company was successfully updated.' }
format.json { render :show, status: :ok, location: #company }
else
format.html { render :edit }
format.json { render json: #company.errors, status: :unprocessable_entity }
end
end
end
# DELETE /companies/1
# DELETE /companies/1.json
def destroy
#company.destroy
respond_to do |format|
format.html { redirect_to companies_url, notice: 'Company was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_company
#company = Company.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the
white list through.
def company_params
params.require(:company).permit(:username, :phone, :website, :street, :city, :state, :country, :user_id)
end
end

it just says that the current_user is nil, you need to make sure that the user is logged in to use current_user.company

The log is giving you details as to why the company is returning a nil. The company requires an object in it for the page to load properly. But that is not so because no user is logged in for the company to have an object to return.
<% if((current_user.company) || (current_user.customer)) %> <%=
render 'pages/welcome' %> <% else %>
<% if current_user.is_company %> <%= render 'companies/form',
company: #company%> <% else %>
is returning a nil because no user is logged in.
You can first check if there is a user logged in and then render
something before this to prevent the error page
<% if(current_user) <% if((current_user.company) ||
(current_user.customer)) %>
<%= render 'pages/welcome' %> <% else %>
<% if current_user.is_company %>
<%= render 'companies/form', company: #company%> <% end %> <% else %> render something here <% end %>
Or simply log in to make sure this does not return a nil. But the first fix is the most ideal.

Rails / Ajax - update action for comments partial not working

I'm building an events app using Rails 5.0 and have comments as a nested resource. Users can create and destroy comments, I'm trying to implement the edit/update function using Ajax/ remote: true so they can update a comment on the same page but it's not working. When I click on the edit link nothing happens. Here's the relevant code -
comments_controller.rb
class CommentsController < ApplicationController
before_action :set_comment, only: [:show, :edit, :update, :destroy]
def create
#event = Event.find(params[:event_id])
#comment = #event.comments.create(comment_params)
#comment.user_id = current_user.id
if #comment.save
redirect_to #event
else
render 'new'
end
end
# GET /comments/1/edit
def edit
#event = #comment.event
#comment = #event.comments.find(params[:id])
respond_to do |format|
format.html { render :edit }
format.js {}
end
end
def show
end
def update
if #comment.update(comment_params)
redirect_to #event, notice: "Comment was successfully updated!"
else
render 'edit'
end
respond_to do |f|
format.html { redirect_to #event, notice: "Comment Successfully updated!" }
format.js # render 'comments/update.js.erb'
end
end
def destroy
#event = Event.find(params[:event_id])
#comment = #event.comments.find(params[:id])
#comment.destroy
redirect_to event_path(#event)
end
private
def set_comment
#comment = Comment.find(params[:id])
end
def comment_params
params.require(:comment).permit(:name, :body)
end
end
_comment.html.erb
<div class="comment clearfix">
<div class="comment_content">
<div id="comments" class="comment">
<p id="comment_name"><strong><%= #comment.name %></strong></p>
<p id="comment_body"><%= #comment.body %></p>
</div>
<p><%= link_to 'Edit', edit_event_comment_path(comment.event), id: "comments", remote: true %></p>
<p><%= link_to 'Delete', comment.event,
method: :delete,
class: "button",
data: { confirm: 'Are you sure?' } %></p>
</div>
</div>
update.js.erb
$('#comments').append("<%= j render #comment %>");
edit.js.erb
$('#comments').html("<%= j render 'form' %>");
_form.html.erb
<%= simple_form_for([#event, #comment], remote: true) do |f| %>
<%= f.label :comment %><br>
<%= f.text_area :body %><br>
<br>
<%= f.button :submit, label: 'Add Comment', class: "btn btn-primary" %>
<% end %>
I've never implemented this action before using Ajax so I'm probably making a few schoolboy errors here. Any assistance appreciated.

You are calling edit method on controller with this
<%= link_to 'Edit', [comment.event, comment], id: "comment", remote: true %>
And you have no edit.js.erb
For updating your comment, you would have to create a form with it's action url pointing to your update method, and marking it as remote true. Then when you submit, it will reach update directly, there is no need to pass through edit method.
There is a method for creating forms with ajax option as default called form_with, you can check it's guide and documentation here:
http://guides.rubyonrails.org/working_with_javascript_in_rails.html#form-with
Updating answer after your question update
Your form would need to become something like this
<%= simple_form_for :comment, :url => "/events/#{comment.event_id}/comments/#{comment.id}", :method => :put do |f| %>
<%= f.label :comment %><br>
<%= f.text_area :body %><br>
<br>
<%= f.button :submit, label: 'Add Comment', class: "btn btn-primary" %>
<% end %>

Update nested form attribute with a iteration

I'm currently trying to use the nested form with cocoon, is awesome !! But I'm facing to an interrogation and I don't know which way I should take.
Relations :
Ranch have Cows
Ranch have Productions
Production have nested form Iproductions
What I'm trying to do now is implement my iteration |c| into each of my iproductions:cow_id elements
My code:
(My_form production)=
<%- #cows.each do |c| %>
<div class="row">
<div class="col-md-12">
<div id="Order">
<%= f.simple_fields_for :iproductions do |ip| %>
<%= render 'iproductions_fields', f: ip, cow: c %>
<%end%>
<div class="Order_links">
<%= link_to_add_association c.name, f, :iproductions, cow: c, class: "btn btn-default" %>
</div>
</div>
</div>
</div>
(My iproductions_fields)=
<div class="form-inline clearfix">
<div class="nested-fields">
<%= f.input :cow_id, :input_html => { :cow_id => :cow } %>
<%= f.input :quantity, input_html: {class: "form-input form-control"} %>
<%= link_to_remove_association "Supprimer", f, class: "form-button btn btn-default" %>
</div>
</div>
(My productions_controllers)=
class ProductionsController < ApplicationController
before_action :authenticate_user!
skip_before_action :configure_sign_up_params
before_action :set_ranch
before_action :set_production, except: [:create, :new, :show]
before_action :set_production2, only: [:show]
# GET /productions
# GET /productions.json
def index
#productions = Production.all
end
# GET /productions/1
# GET /productions/1.json
def show
#iproductions = Iproduction.where(id: params[:production_id])
end
# GET /productions/new
def new
#production = #ranch.productions.build
#cows = #ranch.cows
end
# GET /productions/1/edit
def edit
#cows = #ranch.cows
end
# POST /productions
# POST /productions.json
def create
#production = #ranch.productions.create(production_params)
#production.update(date: Date.today)
#cows = #ranch.cows
respond_to do |format|
if #production.save
format.html { redirect_to ranch_production_path(#production.ranch_id, #production), notice: 'Production was successfully created.' }
format.json { render :show, status: :created, location: #production }
else
format.html { render :new }
format.json { render json: #production.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /productions/1
# PATCH/PUT /productions/1.json
def update
respond_to do |format|
if #production.update(production_params)
format.html { redirect_to ranch_production_path(#production.ranch_id, #production), notice: 'Production was successfully updated.' }
format.json { render :show, status: :ok, location: #production }
else
format.html { render :edit }
format.json { render json: #production.errors, status: :unprocessable_entity }
end
end
end
# DELETE /productions/1
# DELETE /productions/1.json
def destroy
#production.destroy
respond_to do |format|
format.html { redirect_to ranch_productions_path(#production.ranch_id), notice: 'Production was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_ranch
#ranch = Ranch.find(params[:ranch_id])
end
def set_production2
#production = Production.find_by(id: params[:id])
end
def set_production
#production = #ranch.productions.find_by(id: params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def production_params
params.require(:production).permit(:name, :ranch_id, :created_at, :date, iproductions_attributes: [:id, :date, :cow_id, :quantity, :_destroy])
end
end
My real view , so I would like to Assign each iproduction with the button which generate the iproductions_fields
So if you have any idea of which way I can try to achieve this goal, you're welcome,
Thanks in advance

undefined method `events' for nil:NilClass

I was working with nested attributes, everything seemed to be fine until when I submitted my information and I got this error. It says it is in my EventsController file:
class EventsController < ApplicationController
def new
#event = Event.new
#event.songs.build
end
def index
#songs = Song.all
end
def show
#event = Event.find(params[:id])
#songs = #event.songs.paginate(page: params[:page])
end
def create
#event = current_user.events.build(event_params)
if #event.save
flash[:success] = "Event Created!"
redirect_to user_path(#event.user)
else
render 'welcome#index'
end
end
def destroy
end
private
def event_params
params.require(:event).permit(:name, :partycode, song_attributes: [:event_id, :artist, :title, :genre, :partycode])
end
end
Here is my new.html.erb file in my songs view(handles song submission based on selected event)
<br>
<br>
<div class ="container">
<div class="jumbotron">
<%= form_for Event.new do |f| %>
<h3>Enter a song:</h3>
<%= f.fields_for :songs, Song.new do |song_form| %>
<%= song_form.collection_select(:event_id, Event.all, :id, :name) %>
<%= song_form.text_field :artist, placeholder: "Artist" %>
<%= song_form.text_field :title, placeholder: "Title" %>
<%= song_form.text_field :genre, placeholder: "Genre" %>
<% end %>
<%= link_to_add_fields "Add Song", f, :songs %>
<%= f.text_field :partycode %>
<%= f.submit "Submit", class: "btn btn-primary" %>
<% end %>
</div>
</div>
The link_to_add_fields method is defined in my ApplicationHelper.rb file:
module ApplicationHelper
def link_to_add_fields(name, f, association)
new_object = f.object.send(association).klass.new
id = new_object.object_id
fields = f.fields_for(association, new_object, child_index: id) do |builder|
render("songs_fields", f: builder)
end
link_to(name, '#', class: "add_fields", data: {id: id, fields: fields.gsub("\n", "")})
end
end
current_user is defined in Session_helper.rb file:
module SessionsHelper
# Logs in the given user.
def log_in(user)
session[:user_id] = user.id
end
def createEvent(event)
session[:event_id] = event.id
end
# Returns the current logged-in user (if any).
def current_user
#current_user ||= User.find_by(id: session[:user_id])
end
# Returns true if the user is logged in, false otherwise.
def logged_in?
!current_user.nil?
end
def log_out
session.delete(:user_id)
#current_user = nil
end
end
Finally, here is my songs_fields file that generates fields only when a user clicks a link that says 'Add songs'
<fieldset>
<%= f.text_field :artist, placeholder: "Artist" %>
<%= f.text_field :title, placeholder: "Title" %>
<%= f.text_field :genre, placeholder: "Genre" %>
</fieldset>
I feel as though this is the last portion before I get everything in my app to work! So help on this would be tremendous :D

You answered your own question... if you're not logged in, current_user will be nil so you will get this error.
Option 1 (ugly): change your logic so current_user.events doesn't get called if current_user is nil, and just go straight to the render
Option 2 (better): use a before_action statement to force current_user to be set before the action is run. Depends on what you're using to authenticate, but with Devise it would look like this:
class EventsController < ApplicationController
before_action :authenticate_user!
I think maybe:
class EventsController < ApplicationController
before_action :log_in(user)
might do it for you.

Ajax and Rails Completed 406 Not Acceptable

I'm completely lost as to how to make this request go through ajax without throwing back a 406 error. I am trying to add an item to a cart with ajax, and the item does get added and after a refresh the cart is updated. All I receive as an xhr notice with the 406 error. Any help is highly appreciated.
Product Controller
class ProductsController < ApplicationController
def index
#products = Shoppe::Product.root.ordered.includes(:product_categories, :variants)
#products = #products.group_by(&:product_category)
end
def show
#product = Shoppe::Product.root.find_by_permalink(params[:permalink])
end
def buy
#product = Shoppe::Product.root.find_by_permalink!(params[:permalink]) || params[:variant] ? Shoppe::Product.root.find_by_permalink!(params[:permalink]).variants.find(params[:variant].to_i) : #product
current_order.order_items.add_item(#product, 1)
respond_to do |format|
format.js
end
end
end
Show.html.erb
<h2><%= #product.name %></h2>
<% if #product.default_image %>
<%= image_tag #product.default_image.path, :width => '200px', :style => "float:right" %>
<% end %>
<p><%= #product.short_description %></p>
<p>
<% if #product.has_variants? %>
<% #product.variants.each do |v| %>
<%= form_tag product_path(#product.permalink, #product.permalink, :variant => v.id ),id: '#submit-form', remote: true do %>
<%= submit_tag 'Add to basket', :disabled => !v.in_stock? %>
<% end %>
<% end %>
<% else %>
<b><%= number_to_currency #product.price %></b>
<%= link_to "Add to basket", product_path(#product.permalink), :method => :post %>
<% end %>
</p>
<hr>
<%= simple_format #product.description %>
<hr>
<p><%= link_to "Back to list", root_path %></p>
routes.rb
Rails.application.routes.draw do
mount Shoppe::Engine => "/admin"
get "product/:permalink", to: "products#show", as: "product"
post "product/:permalink", to: "products#buy", as: "buy"
get "basket", to: "orders#show"
delete "basket", to: "orders#destroy"
root to: "products#index"
end
products.js.erb
$(document).ready(function() {
var data = $('#submit-form').attr('action')
$.ajax({
type: 'POST',
url: data
});
});

Looking up what format.js does, I found this: rails respond_to format.js API
It seems format.js in your buy action will render the buy.js file. You haven't shown this file, so I'm figuring it doesn't exist.
I'm figuring what you're trying to do is render json, which is simple enough. You could replace:
respond_to do |format|
format.js
end
with this:
render json: <your object>.to_json
make sure to strip any private data before sending the response.
By the way, you should probably be attaching a callback to your $.ajax call.