Class: ReactOnRails::Generators::InstallGenerator

Inherits:
Rails::Generators::Base
  • Object
show all
Includes:
GeneratorHelper
Defined in:
lib/generators/react_on_rails/install_generator.rb

Overview

rubocop:disable Metrics/ClassLength

Instance Method Summary collapse

Methods included from GeneratorHelper

#add_documentation_reference, #add_npm_dependencies, #component_extension, #copy_file_and_missing_parent_directories, #dest_dir_exists?, #dest_file_exists?, #empty_directory_with_keep_file, #keep_file, #package_json, #setup_file_error, #symlink_dest_file_to_dest_file

Instance Method Details

#run_generators ⇒ Object

Note:

Validation Skipping: Sets ENV to prevent version validation from running during generator execution. The npm package isn’t installed until midway through the generator, so validation would fail if run during Rails initialization. The ensure block guarantees cleanup even if the generator fails.

Main generator entry point

Sets up React on Rails in a Rails application by:

  1. Validating prerequisites

  2. Installing required packages

  3. Generating configuration files

  4. Setting up example components



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# File 'lib/generators/react_on_rails/install_generator.rb', line 58

def run_generators
  # Set environment variable to skip validation during generator run
  # This is inherited by all invoked generators and persists through Rails initialization
  # See lib/react_on_rails/engine.rb for the validation skip logic
  ENV["REACT_ON_RAILS_SKIP_VALIDATION"] = "true"

  if installation_prerequisites_met? || options.ignore_warnings?
    invoke_generators
    add_bin_scripts
    # Only add the post install message if not using Redux
    # Redux generator handles its own messages
    add_post_install_message unless options.redux?
  else
    error = <<~MSG.strip
      🚫 React on Rails generator prerequisites not met!

      Please resolve the issues listed above before continuing.
      All prerequisites must be satisfied for a successful installation.

      Use --ignore-warnings to bypass checks (not recommended).
    MSG
    GeneratorMessages.add_error(error)
  end
ensure
  # Always clean up ENV variable, even if generator fails
  # CRITICAL: ENV cleanup must come first to ensure it executes even if
  # print_generator_messages raises an exception. This prevents ENV pollution
  # that could affect subsequent processes.
  ENV.delete("REACT_ON_RAILS_SKIP_VALIDATION")
  print_generator_messages
end