When I run the rake:db migrate command I get an error "Uninitialized constant CreateArticles"

featureBlend_50477 0
Viewed 30063

I created a model ruby script/generate model Article (simple enuff)

Here is the migration file create_articles.rb:

def self.up
  create_table :articles do |t|
    t.column :user_id, :integer
    t.column :title, :string
    t.column :synopsis, :text, :limit => 1000
    t.column :body, :text, :limit => 20000
    t.column :published, :boolean, :default => false
    t.column :created_at, :datetime
    t.column :updated_at, :datetime
    t.column :published_at, :datetime
    t.column :category_id, :integer
  end

def self.down
  drop_table :articles
 end
end

When I run the rake:db migrate command I receive an error rake aborted! "Uninitialized constant CreateArticles."

Does anyone know why this error keeps happening?

rails-migrations rake ruby-on-rails
4 Answers

Be sure that your file name and class name say the same thing(except the class name is camel cased).The contents of your migration file should look something like this, simplified them a bit too:

#20090106022023_create_articles.rb
class CreateArticles < ActiveRecord::Migration   
  def self.up
    create_table :articles do |t|
      t.belongs_to :user, :category
      t.string :title
      t.text :synopsis, :limit => 1000
      t.text :body, :limit => 20000
      t.boolean :published, :default => false
      t.datetime :published_at
      t.timestamps
    end
  end

  def self.down
    drop_table :articles
  end
end
thetacom_513230

The top answer solved for me. Just leaving this here in case it helps.

Example

If your migration file is called

20210213040840_add_first_initial_only_to_users.rb

then the class name in your migration file should be

AddFirstInitialOnlyToUsers

Note: if the class name doesn't match, it will error even if the difference is just a lower case t instead of an upper case 'T' in 'To' - so be careful of that!

user_57837450
Related