Rails Migration File not adding columns to Mysql database - mysql

Question

I am trying to create a login system in Rails, but, when I go to the signup page, I get an error saying : "undefined method `first_name' for #". I checked my users database for the "first_name" column, and found that the only columns in the "users" table were "id", "created_at", and "updated_at". I created my app using rails new appname -d mysql, I have the mysql2 gem, I have updated my databases.yml file, and I have run "rake db:migrate". Still, nothing works. How can I fix this? This is my users controller:
class UsersController < ApplicationController
def new
#user = User.new
end
def create
#user = User.new(user_params)
if #user.save
session[:user_id] = #user.id
redirect_to '/login'
else
redirect_to '/signup'
end
end
private
def user_params
params.require(:user).permit(:first_name, :last_name, :email, :password)
end
end
Here is my router:
Rails.application.routes.draw do
root 'main#index'
get '/login' => 'sessions#new'
get '/signup' => 'users#new'
resources :users
post 'login' => 'sessions#create'
# For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end
Here is my model:
class User < ApplicationRecord
has_secure_password
end
Here is my Migration file:
class CreateUsers < ActiveRecord::Migration[5.0]
def change
create_table :users do |t|
t.string :first_name
t.string :last_name
t.string :email
t.string :password_digest
t.timestamps
end
end
end
Here is my view:
<div class="login">
<div class="container">
<div class="form">
<h1>Sign up</h1>
<%= form_for(#user) do |f| %>
<%= f.text_field :first_name, :placeholder => "First name" %>
<%= f.text_field :last_name, :placeholder => "Last name" %>
<%= f.email_field :email, :placeholder => "Email" %>
<%= f.password_field :password, :placeholder => "Password" %>
<%= f.submit "Create an account", class: "btn-submit" %>
<% end %>
</div>
</div>
</div>
I am using Rails 5.0.2 on Ubuntu 16.04

Answer 1

You might want to try to redo the migration with db:migrate:redo, if that doesnt work, create a new migration adding the respective columns.
class CreateUsers < ActiveRecord::Migration[5.0]
def change
add_column :products, :part_number, :string
add_column :products, :price, :decimal
end
end