What is a ruby seed?
What is a ruby seed?
The seeds.rb file is where the seed data is stored, but you need to run the appropriate rake task to actually use the seed data. Using rake -T in your project directory shows information about following tasks: rake db:seed. Load the seed data from db/seeds.rb.
How do I run a ruby seed?
I got the following: NoMethodError: undefined method load_seed’ for # from /home/kenb/ruby/gems/gems/railties-3.0. 3/lib/rails/application. rb:77:in send’ from /home/kenb/ruby/gems/gems/railties-3.0. 3/lib/rails/application.
How do I create a seed in Rails?
In a standard Rails project, we have the seed file at db/seed. rb ….In Action
- When the database already created rails db:seed would be the best option.
- When the database is not ready yet, in other words, we want to create the database first, then we can go with rails db:setup to first run migrations and then seeding.
What is seed data in Rails?
By the way, Rails documentation has a pretty good definition for the seeds: To add initial data after a database is created, Rails has a built-in ‘seeds’ feature that makes the process quick and easy. This is especially useful when reloading the database frequently in development and test environments.
What does db prepare do?
The task db:prepare internally catches ActiveRecord::NoDatabaseError and then runs rails db:setup . If the database does not exist, db:prepare ensures that it is created, migrated and seeded with data.
What does rake db create do?
3 Answers
- rake db:create:all creates all the databases for the application (which are defined in database.yml )
- rake db:create creates the database for the current RAILS_ENV environment. If RAILS_ENV is not specified it defaults to the development and test databases.
What does DB prepare do?
What is rake in Ruby on rails?
Rake is Ruby Make, a standalone Ruby utility that replaces the Unix utility ‘make’, and uses a ‘Rakefile’ and . rake files to build up a list of tasks. In Rails, Rake is used for common administration tasks, especially sophisticated ones that build off of each other.
How do I run a database migration in Ruby on Rails?
Go to db/migrate subdirectory of your application and edit each file one by one using any simple text editor. The ID column will be created automatically, so don’t do it here as well. The method self. up is used when migrating to a new version, self.
What is rake db schema load?
rake db:schema:load. Unlike rake db:migrate that runs migrations that have not run yet, rake db:schema:load loads the schema that is already generated in db/schema. rb into the database. Always use this command when: You run the application for the first time.
