我將首先在我的機器上寫下我的路徑和版本的 ruby?? 和 rails，然后是我遇到的錯誤。
which rails
/Users/alex/.rvm/gems/ruby-3.0.3/bin/rails
rails -v
Rails 7.0.1
which ruby
/Users/alex/.rvm/rubies/ruby-3.0.3/bin/ruby
ruby -v
ruby 3.0.3p157 (2021-11-24 revision 3fb7d2cadc) [x86_64-darwin21]
當我嘗試運行時rails console，它不會運行，但會顯示以下選項：
Usage:
rails new APP_PATH [options]
Options:
[--skip-namespace], [--no-skip-namespace] # Skip namespace (affects only isolated engines)
[--skip-collision-check], [--no-skip-collision-check] # Skip collision check
-r, [--ruby=PATH] # Path to the Ruby binary of your choice
# Default: /Users/alex/.rvm/rubies/ruby-3.0.3/bin/ruby
-m, [--template=TEMPLATE] # Path to some application template (can be a filesystem path or URL)
-d, [--database=DATABASE] # Preconfigure for selected database (options: mysql/postgresql/sqlite3/oracle/sqlserver/jdbcmysql/jdbcsqlite3/jdbcpostgresql/jdbc)
# Default: sqlite3
-G, [--skip-git], [--no-skip-git] # Skip .gitignore file
[--skip-keeps], [--no-skip-keeps] # Skip source control .keep files
-M, [--skip-action-mailer], [--no-skip-action-mailer] # Skip Action Mailer files
[--skip-action-mailbox], [--no-skip-action-mailbox] # Skip Action Mailbox gem
[--skip-action-text], [--no-skip-action-text] # Skip Action Text gem
-O, [--skip-active-record], [--no-skip-active-record] # Skip Active Record files
[--skip-active-job], [--no-skip-active-job] # Skip Active Job
[--skip-active-storage], [--no-skip-active-storage] # Skip Active Storage files
-C, [--skip-action-cable], [--no-skip-action-cable] # Skip Action Cable files
-A, [--skip-asset-pipeline], [--no-skip-asset-pipeline] # Indicates when to generate skip asset pipeline
-a, [--asset-pipeline=ASSET_PIPELINE] # Choose your asset pipeline [options: sprockets (default), propshaft]
# Default: sprockets
-J, [--skip-javascript], [--no-skip-javascript] # Skip JavaScript files
[--skip-hotwire], [--no-skip-hotwire] # Skip Hotwire integration
[--skip-jbuilder], [--no-skip-jbuilder] # Skip jbuilder gem
-T, [--skip-test], [--no-skip-test] # Skip test files
[--skip-system-test], [--no-skip-system-test] # Skip system test files
[--skip-bootsnap], [--no-skip-bootsnap] # Skip bootsnap gem
[--dev], [--no-dev] # Set up the application with Gemfile pointing to your Rails checkout
[--edge], [--no-edge] # Set up the application with Gemfile pointing to Rails repository
--master, [--main], [--no-main] # Set up the application with Gemfile pointing to Rails repository main branch
[--rc=RC] # Path to file containing extra configuration options for rails command
[--no-rc], [--no-no-rc] # Skip loading of extra configuration options from .railsrc file
[--api], [--no-api] # Preconfigure smaller stack for API only apps
[--minimal], [--no-minimal] # Preconfigure a minimal rails app
-j, [--javascript=JAVASCRIPT] # Choose JavaScript approach [options: importmap (default), webpack, esbuild, rollup]
# Default: importmap
-c, [--css=CSS] # Choose CSS processor [options: tailwind, bootstrap, bulma, postcss, sass... check https://github.com/rails/cssbundling-rails]
-B, [--skip-bundle], [--no-skip-bundle] # Don't run bundle install
Runtime options:
-f, [--force] # Overwrite files that already exist
-p, [--pretend], [--no-pretend] # Run but do not make any changes
-q, [--quiet], [--no-quiet] # Suppress status output
-s, [--skip], [--no-skip] # Skip files that already exist
Rails options:
-h, [--help], [--no-help] # Show this help message and quit
-v, [--version], [--no-version] # Show Rails version number and quit
Description:
The 'rails new' command creates a new Rails application with a default
directory structure and configuration at the path you specify.
You can specify extra command-line arguments to be used every time
'rails new' runs in the .railsrc configuration file in your home directory,
or in $XDG_CONFIG_HOME/rails/railsrc if XDG_CONFIG_HOME is set.
Note that the arguments specified in the .railsrc file don't affect the
defaults values shown above in this help message.
Example:
rails new ~/Code/Ruby/weblog
This generates a skeletal Rails installation in ~/Code/Ruby/weblog.
uj5u.com熱心網友回復：
您是否創建了 Rails 應用程式？看起來您正在rails console一個尚未創建 Rails 應用程式的目錄中運行。
您應該使用 創建一個新應用程式rails new [app_name]，然后運行rails console. 或者，確保您位于現有 Rails 應用程式的根目錄中。
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