#RAILS COMMAND SEE ALL ACTIVE TABLES INSTALL#
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The most common commands of the db: rails namespace are migrate and create, and it will pay off to try out all of the migration rails commands ( up, down, redo, reset). If you want to clear public/assets completely, you can use bin/rails assets:clobber. The assets:clean command allows for rolling deploys that may still be linking to an old asset while the new assets are being built. You can precompile the assets in app/assets using bin/rails assets:precompile, and remove older compiled assets using bin/rails assets:clean. Middleware: Rack::Sendfile, ActionDispatch::Static, ActionDispatch::Executor, ActiveSupport::Cache::Strategy::LocalCache::Middleware, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, ActionDispatch::RemoteIp, Sprockets::Rails::QuietAssets, Rails::Rack::Logger, ActionDispatch::ShowExceptions, WebConsole::Middleware, ActionDispatch::DebugExceptions, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::Migration::CheckPending, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, Rack::Head, Rack::ConditionalGet, Rack::ETag We'll talk more about that command below. Which database? The SQLite3 database that Rails will create for you when we run the bin/rails db:migrate command.

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The migration requires that we migrate, that is, run some Ruby code (the 20190416145729_create_high_scores.rb file from the above output) to modify the schema of our database.

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The generator creates the model, views, controller, resource route, and database migration (which creates the high_scores table) for HighScore. $ bin/rails generate scaffold HighScore game:string score:integerД¬reate db/migrate/20190416145729_create_high_scores.rbД¬reate app/controllers/high_scores_controller.rbД¬reate app/views/high_scores/Д¬reate app/views/high_scores/Д¬reate app/views/high_scores/Д¬reate app/views/high_scores/Д¬reate app/views/high_scores/_Д¬reate test/controllers/high_scores_controller_test.rbД¬reate app/views/high_scores/Д¬reate app/views/high_scores/Д¬reate app/views/high_scores/_high_ With no further work, bin/rails server will run our new shiny Rails app: You'll use this any time you want to access your application through a web browser. The bin/rails server command launches a web server named Puma which comes bundled with Rails. Дb:schema:load Loads a database schema file (either db/schema.rb or db/structure.sql. Дb:migrate:status Display status of migrationsДb:schema:cache:clear Clears a db/schema_cache.yml fileДb:schema:cache:dump Creates a db/schema_cache.yml fileДb:schema:dump Creates a database schema file (either db/schema.rb or db/structure.sql. Дb:fixtures:load Loads fixtures into the. In addition to those commands, there are:ДЄssets:clean Remove old compiled assetsДЄssets:environment Load asset compile environmentДЄssets:precompile Compile all the assets. Server Start the Rails server (short-cut alias: 's')ДЄll commands can be run with -h (or -help) for more information. Generate Generate new code (short-cut alias: 'g')Д¬onsole Start the Rails console (short-cut alias: 'c') Each command has a description, and should help you find the thing you need. You can get a list of rails commands available to you, which will often depend on your current directory, by typing rails -help. In the order of how much you'll probably use them are: There are a few commands that are absolutely critical to your everyday usage of Rails. To our choice of PostgreSQL for database.

It generated some lines in our database.yml configuration corresponding # For details on connection pooling, see Rails configuration guide

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# Install PostgreSQL and put its /bin directory on your path. # gem install pg -with-pg-config =/opt/local/lib/postgresql84/bin/pg_config # gem install pg -with-pg-config =/usr/local/bin/pg_config Let's see what a -database=postgresql option will do for us: Of database your application is going to use. When creating a new Rails application, you have the option to specify what kind

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For a full list of options, type rails new -help. These are just some of the options that rails new accepts. If you wish to skip some files from being generated or skip some libraries, you can append any of the following arguments to your rails new command: Argument Rails will set up what seems like a huge amount of stuff for such a tiny command! We've got the entire Rails directory structure now with all the code we need to run our simple application right out of the box.

Rails command see all active tables