class Rails::Command::Base

Parent:: Thor
Included modules:: Rails::Command::Actions

Public Class Methods

# File railties/lib/rails/command/base.rb, line 75
def banner(*)
  "#{executable} #{arguments.map(&:usage).join(' ')} [options]".squish!
end

Use Rails' default banner.

base_name() Show source

# File railties/lib/rails/command/base.rb, line 82
def base_name
  @base_name ||= begin
    if base = name.to_s.split("::").first
      base.underscore
    end
  end
end

Sets the ::base_name taking into account the current class namespace.

Rails::Command::TestCommand.base_name # => 'rails'

command_name() Show source

# File railties/lib/rails/command/base.rb, line 93
def command_name
  @command_name ||= begin
    if command = name.to_s.split("::").last
      command.chomp!("Command")
      command.underscore
    end
  end
end

Return command name without namespaces.

Rails::Command::TestCommand.command_name # => 'test'

default_command_root() Show source

# File railties/lib/rails/command/base.rb, line 115
def default_command_root
  path = File.expand_path(File.join("../commands", command_root_namespace), __dir__)
  path if File.exist?(path)
end

Default file root to place extra files a command might need, placed one folder above the command file.

For a `Rails::Command::TestCommand` placed in `rails/command/test_command.rb` would return `rails/test`.

desc(usage = nil, description = nil, options = {}) Show source

# File railties/lib/rails/command/base.rb, line 25
def desc(usage = nil, description = nil, options = {})
  if usage
    super
  else
    @desc ||= ERB.new(File.read(usage_path)).result(binding) if usage_path
  end
end

Tries to get the description from a USAGE file one folder above the command root.

Calls superclass method

engine?() Show source

# File railties/lib/rails/command/base.rb, line 19
def engine?
  defined?(ENGINE_ROOT)
end

Returns true when the app is a Rails engine.

executable() Show source

# File railties/lib/rails/command/base.rb, line 70
def executable
  "bin/rails #{command_name}"
end

hide_command!() Show source

# File railties/lib/rails/command/base.rb, line 46
def hide_command!
  Rails::Command.hidden_commands << self
end

Convenience method to hide this command from the available ones when running rails command.

namespace(name = nil) Show source

# File railties/lib/rails/command/base.rb, line 36
def namespace(name = nil)
  if name
    super
  else
    @namespace ||= super.chomp("_command").sub(/:command:/, ":")
  end
end

Convenience method to get the namespace from the class name. It's the same as Thor default except that the Command at the end of the class is removed.

Calls superclass method

printing_commands() Show source

# File railties/lib/rails/command/base.rb, line 66
def printing_commands
  namespaced_commands
end

usage_path() Show source

# File railties/lib/rails/command/base.rb, line 103
def usage_path
  if default_command_root
    path = File.join(default_command_root, "USAGE")
    path if File.exist?(path)
  end
end

Path to lookup a USAGE description in a file.

Public Instance Methods

help() Show source

# File railties/lib/rails/command/base.rb, line 146
def help
  if command_name = self.class.command_name
    self.class.command_help(shell, command_name)
  else
    super
  end
end

Calls superclass method