method

find_by_namespace

v5.1.7 - Show latest stable - 0 notes - Class: Command

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What's this?

find_by_namespace(namespace, command_name = nil) public

Rails finds namespaces similar to Thor, it only adds one rule:

Command names must end with “_command.rb”. This is required because Rails looks in load paths and loads the command just before it’s going to be used.

find_by_namespace :webrat, :rails, :integration

Will search for the following commands:

"rails:webrat", "webrat:integration", "webrat"

Notice that “rails:commands:webrat” could be loaded as well, what Rails looks for is the first and last parts of the namespace.

Show source

# File railties/lib/rails/command.rb, line 63
      def find_by_namespace(namespace, command_name = nil) # :nodoc:
        lookups = [ namespace ]
        lookups << "#{namespace}:#{command_name}" if command_name
        lookups.concat lookups.map { |lookup| "rails:#{lookup}" }

        lookup(lookups)

        namespaces = subclasses.index_by(&:namespace)
        namespaces[(lookups & namespaces.keys).first]
      end

find_by_namespace

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