Capistrano Symfony Parameters

parameters.rake

namespace :symfony do
    namespace :parameters do

        desc "Create parameters.yml file based on the parameters.yml.dist one. Ask for all parameters."
        task :create do
            on roles(:all) do
                if  not test("[ -f #{shared_path}/app/config/parameters.yml ]")
                    distParameters = YAML::load(capture("cat #{release_path}/app/config/parameters.yml.dist"))
                    parameters = { "parameters" => {} }
                    distParameters['parameters'].each do |k,v|
                        set :parameter, ask(k, v)
                        parameters['parameters'][k] = fetch(:parameter)
                    end
                    upload! StringIO.new(parameters.to_yaml(line_width: -1)), "#{shared_path}/app/config/parameters.yml"
                end
            end
        end

        desc "Update parameters.yml file based on the parameters.yml.dist one. Old parameters will be deleted, for the new ones you will be asked."
        task :update do
            on roles(:all) do
                if  test("[ -f #{shared_path}/app/config/parameters.yml ]")
                    distParameters = YAML::load(capture("cat #{release_path}/app/config/parameters.yml.dist"))
                    parameters = YAML::load(capture("cat #{shared_path}/app/config/parameters.yml"))

                    # Remove old parameters
                    parameters['parameters'].each do |k,v|
                        if !distParameters['parameters'].has_key?(k)
                            parameters['parameters'].delete(k)
                        end
                    end

                    # Ask for new parameters
                    distParameters['parameters'].each do |k,v|
                        if !parameters['parameters'].has_key?(k)
                            set :parameter, ask(k, v)
                            parameters['parameters'][k] = fetch(:parameter)
                        end
                    end

                    upload! StringIO.new(parameters.to_yaml(line_width: -1)), "#{shared_path}/app/config/parameters.yml"
                end
            end
        end

        desc "Edit parameters."
        task :edit do
            on roles(:all) do
                if  test("[ -f #{shared_path}/app/config/parameters.yml ]")
                    parameters = YAML::load(capture("cat #{shared_path}/app/config/parameters.yml"))

                    # Ask for new values
                    parameters['parameters'].each do |k,v|
                        set :parameter, ask(k, v)
                        parameters['parameters'][k] = fetch(:parameter)
                    end

                    upload! StringIO.new(parameters.to_yaml(line_width: -1)), "#{shared_path}/app/config/parameters.yml"
                end
            end
        end

    end
end