Since I'm supposed to forget how to add options and specify the version every time, I will also summarize the rails new surroundings as a memorandum.
$ gem search ^rails$ -l *** LOCAL GEMS *** rails (18.104.22.168, 22.214.171.124, 126.96.36.199, 6.0.0)
You can use the version shown here to create a Rails application.
$rails new Project name to create
You can launch a new project by entering the
rails new command.
$cd project name
Change to the directory of the project you created using the
rails server Or rails s
You can set up a local server.
=> Booting Puma => Rails 188.8.131.52 application starting in development => Run `rails server --help` for more startup options Puma starting in single mode... * Version 3.12.6 (ruby 2.6.5-p114), codename: Llamas in Pajamas * Min threads: 5, max threads: 5 * Environment: development * Listening on tcp://localhost:3000 Use Ctrl-C to stop
Is displayed, the startup is successful.
In your browser http: // localhost: 3000 / To access If the You ’re on Rails !! screen appears, it's OK!
$ rails db:drop
If you are creating a database, you must first delete it with this command.
rm -r directory name
You can delete it with this command. You can erase it with the viewfinder.
(When Mysql is specified) Rails new project name-d mysql Or Rails new project name — database=mysql
The default database is SQLite3. If you want to change to Mysql or potgresql, it is easy to specify it first.
Rails _6.0.0_new project name
By default, the latest installed version of rails will be launched. If you need to specify the version, specify it first.