NoMethodError in Statuses#new - ruby-on-rails

Question

I'm currently building this website in college for fun. My hope is that it will help the education system. Anyways, I'm still trying to figure out rails. I just set up the devise gem with no problem. However, when I click post a new status it gives me this error:
NoMethodError in Statuses#new
Showing /Users/wyatt/Network/netbook/app/views/statuses/_form.html.erb where line #16 raised:
undefined method `user_name' for #<Status:0x00000101ec36d0>
Extracted source (around line #16):
13:
14: <div class="field">
15: <%= f.label :user_name %><br />
16: <%= f.text_field :user_name %>
17: </div>
18: <div class="field">
19: <%= f.label :content %><br />
So here's what my form looks like:
<%= form_for(#status) do |f| %>
<% if #status.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#status.errors.count, "error") %> prohibited this status from being saved:</h2>
<ul>
<% #status.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :user_name %><br />
<%= f.text_field :user_name %>
</div>
<div class="field">
<%= f.label :content %><br />
<%= f.text_area :content %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
Here's my controller
class StatusesController < ApplicationController
# GET /statuses
# GET /statuses.json
def index
#statuses = Status.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: #statuses }
end
end
# GET /statuses/1
# GET /statuses/1.json
def show
#status = Status.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: #status }
end
end
# GET /statuses/new
# GET /statuses/new.json
def new
#status = Status.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: #status }
end
end
# GET /statuses/1/edit
def edit
#status = Status.find(params[:id])
end
# POST /statuses
# POST /statuses.json
def create
#status = Status.new(params[:status])
respond_to do |format|
if #status.save
format.html { redirect_to #status, notice: 'Status was successfully created.' }
format.json { render json: #status, status: :created, location: #status }
else
format.html { render action: "new" }
format.json { render json: #status.errors, status: :unprocessable_entity }
end
end
end
# PUT /statuses/1
# PUT /statuses/1.json
def update
#status = Status.find(params[:id])
respond_to do |format|
if #status.update_attributes(params[:status])
format.html { redirect_to #status, notice: 'Status was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: #status.errors, status: :unprocessable_entity }
end
end
end
# DELETE /statuses/1
# DELETE /statuses/1.json
def destroy
#status = Status.find(params[:id])
#status.destroy
respond_to do |format|
format.html { redirect_to statuses_url }
format.json { head :no_content }
end
end
end

Answer 1

From looking at it, it seems you're wanting to append a user_name to a status
Error
Your error basically means you don't have a user_name column in your statuses data table. The basic fix will be to create a migration to add a user_name column to your statuses db:
$ rails generate migration AddUserNameToStatuses
#db/migrations/AddUserNameToStatuses.rb
class AddUserNameToStatuses < ActiveRecord::Migration
def change
add_column :statuses, :user_name, :string
end
end
$ rake db:migrate
Fix
I would actually ditch that, and do this:
#app/models/status.rb
Class Status < ActiveRecord::Base
belongs_to :user #-> you need user_id column in statuses db
delegate :name, to: :user, prefix: true
end
#app/models/user.rb
Class User < ActiveRecord::Base
has_many :statuses
end
This will allow you to remove the references to user_name from your form - as any #status will be associated with a user
You'd then be able to use the .delegate() method to call user_name in statuses