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| -rw-r--r-- | guides/source/initialization.textile | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/guides/source/initialization.textile b/guides/source/initialization.textile index fdbee7b332..dc089bfb90 100644 --- a/guides/source/initialization.textile +++ b/guides/source/initialization.textile @@ -187,6 +187,8 @@ h4. +rails/commands.rb+ Once +config/boot.rb+ has finished, the next file that is required is +rails/commands+ which will execute a command based on the arguments passed in. In this case, the +ARGV+ array simply contains +server+ which is extracted into the +command+ variable using these lines: <ruby> +ARGV << '--help' if ARGV.empty? + aliases = { "g" => "generate", "c" => "console", @@ -199,6 +201,9 @@ command = ARGV.shift command = aliases[command] || command </ruby> +TIP: As you can see, an empty ARGV list will make Rails show the help +snippet. + If we used <tt>s</tt> rather than +server+, Rails will use the +aliases+ defined in the file and match them to their respective commands. With the +server+ command, Rails will run this code: <ruby> |