“rails server"命令在终端中不起作用 [英] 'rails server' command not working in terminal

问题描述

我对 Rails 很陌生，正在尝试建立一个非常简单的测试站点.

I'm pretty new to rails, and trying to setup an extremely simple test site.

我已经使用 rails new 命令创建了新的 rails 应用程序目录，但随后无法设置服务器以在浏览器中查看页面.

I've created the new rails app directory using the rails new command, but then cannot setup the server to view the page in a browser.

(以下是我在尝试 rails server 时收到的消息)

(Below is the message I receive when attempting rails server)

MacBook-Pro:documents AT$ rails server
Usage:
  rails new APP_PATH [options]

Options:
  -r, [--ruby=PATH]                                      # Path to the Ruby binary of your choice
                                                         # Default: /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
  -m, [--template=TEMPLATE]                              # Path to some application template (can be a filesystem path or URL)
      [--skip-gemfile], [--no-skip-gemfile]              # Don't create a Gemfile
  -B, [--skip-bundle], [--no-skip-bundle]                # Don't run bundle install
  -G, [--skip-git], [--no-skip-git]                      # Skip .gitignore file
      [--skip-keeps], [--no-skip-keeps]                  # Skip source control .keep files
  -O, [--skip-active-record], [--no-skip-active-record]  # Skip Active Record files
  -V, [--skip-action-view], [--no-skip-action-view]      # Skip Action View files
  -S, [--skip-sprockets], [--no-skip-sprockets]          # Skip Sprockets files
      [--skip-spring], [--no-skip-spring]                # Don't install Spring application preloader
  -d, [--database=DATABASE]                              # Preconfigure for selected database (options: mysql/oracle/postgresql/sqlite3/frontbase/ibm_db/sqlserver/jdbcmysql/jdbcsqlite3/jdbcpostgresql/jdbc)
                                                         # Default: sqlite3
  -j, [--javascript=JAVASCRIPT]                          # Preconfigure for selected JavaScript library
                                                         # Default: jquery
  -J, [--skip-javascript], [--no-skip-javascript]        # Skip JavaScript files
      [--dev], [--no-dev]                                # Setup the application with Gemfile pointing to your Rails checkout
      [--edge], [--no-edge]                              # Setup the application with Gemfile pointing to Rails repository
  -T, [--skip-test-unit], [--no-skip-test-unit]          # Skip Test::Unit files
      [--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

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.

    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.
    See the README in the newly created application to get going.

推荐答案

将当前目录更改为项目目录并执行 rails server 命令.

Change your current directory to the project directory and execute the rails server command.

示例:

$rails new demo_app
$cd demo_app
$rails s

rails server 命令将启动服务器，如果你在 rails 项目目录中.当您执行 rails new demo_app 时，它会创建一个名为 demo_app 的目录，其中包含您的新 Rails 项目.在您的情况下 rails server 不起作用，因为您不在 demo_app 目录中.

rails server command will start the server if you are inside a rails project directory. When you execute rails new demo_app it creates a directory called demo_app, which contains your new rails project. In your case rails server did not work because you are not inside demo_app directory.

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