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PORails creating migration to add columns to table causes error when running rake db:migrate
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  1. PORails creating migration to add columns to table causes error when running rake db:migrate
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    copied!<p>I have a model created called "users" and i created a new migration to add some columns to the users table. Now when i run rake db:migrate, I get the error below b/c it's trying to create the users table again</p> <pre><code>$ rake db:migrate == DeviseCreateUsers: migrating ============================================== -- create_table(:users) rake aborted! An error has occurred, all later migrations canceled: Mysql::Error: Table 'users' already exists: CREATE TABLE `users`..... </code></pre> <p>Why is it trying to create the table again?</p> <p>Here's the command i used to create the new migration</p> <pre><code>$ rails generate migration AddDetailsToUsers home_phone:decimal cell_phone:decimal work_phone:decimal birthday:date home_address:text work_address:text position:string company:string </code></pre> <p>The new migration looks like this:</p> <pre><code>class AddDetailsToUsers &lt; ActiveRecord::Migration def change add_column :users, :home_phone, :decimal add_column :users, :cell_phone, :decimal add_column :users, :work_phone, :decimal add_column :users, :birthday, :date add_column :users, :home_address, :text add_column :users, :work_address, :text add_column :users, :position, :string add_column :users, :company, :string end end </code></pre> <p><strong>EDIT</strong></p> <p>20120511224920_devise_create_users</p> <pre><code>class DeviseCreateUsers &lt; ActiveRecord::Migration def change create_table(:users) do |t| ## Database authenticatable t.string :email, :null =&gt; false, :default =&gt; "" t.string :username, :null =&gt; false, :default =&gt; "" t.string :encrypted_password, :null =&gt; false, :default =&gt; "" ## Recoverable t.string :reset_password_token t.datetime :reset_password_sent_at ## Rememberable t.datetime :remember_created_at ## Trackable t.integer :sign_in_count, :default =&gt; 0 t.datetime :current_sign_in_at t.datetime :last_sign_in_at t.string :current_sign_in_ip t.string :last_sign_in_ip ## Encryptable # t.string :password_salt ## Confirmable # t.string :confirmation_token # t.datetime :confirmed_at # t.datetime :confirmation_sent_at # t.string :unconfirmed_email # Only if using reconfirmable ## Lockable # t.integer :failed_attempts, :default =&gt; 0 # Only if lock strategy is :failed_attempts # t.string :unlock_token # Only if unlock strategy is :email or :both # t.datetime :locked_at ## Token authenticatable # t.string :authentication_token t.timestamps end add_index :users, :email, :unique =&gt; true add_index :users, :reset_password_token, :unique =&gt; true # add_index :users, :confirmation_token, :unique =&gt; true # add_index :users, :unlock_token, :unique =&gt; true # add_index :users, :authentication_token, :unique =&gt; true end end </code></pre> <p>20120619023856_add_name_to_users</p> <pre><code>class AddNameToUsers &lt; ActiveRecord::Migration def change add_column :users, :first_name, :string add_column :users, :last_name, :string end end </code></pre> <p>20121031174720_add_details_to_users.rb</p> <pre><code>class AddDetailsToUsers &lt; ActiveRecord::Migration def change add_column :users, :home_phone, :decimal add_column :users, :cell_phone, :decimal add_column :users, :work_phone, :decimal add_column :users, :birthday, :date add_column :users, :home_address, :text add_column :users, :work_address, :text add_column :users, :position, :string add_column :users, :company, :string end end </code></pre>
 

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