Module: StrongMigrations::Migration

Defined in:
lib/strong_migrations/migration.rb

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/strong_migrations/migration.rb', line 16

def method_missing(method, *args, &block)
  unless @safe || ENV["SAFETY_ASSURED"] || is_a?(ActiveRecord::Schema) || @direction == :down
    case method
    when :remove_column
      raise_error :remove_column
    when :remove_timestamps
      raise_error :remove_column
    when :change_table
      raise_error :change_table
    when :rename_table
      raise_error :rename_table
    when :rename_column
      raise_error :rename_column
    when :add_index
      columns = args[1]
      if columns.is_a?(Array) && columns.size > 3
        raise_error :add_index_columns
      end
      options = args[2]
      if %w(PostgreSQL PostGIS).include?(connection.adapter_name) && !(options && options[:algorithm] == :concurrently)
        raise_error :add_index
      end
    when :add_column
      type = args[2]
      options = args[3]
      raise_error :add_column_default if options && !options[:default].nil?
      raise_error :add_column_json if type.to_s == "json"
    when :change_column
      raise_error :change_column
    end
  end

  super
end

Instance Method Details

#migrate(direction) ⇒ Object 



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# File 'lib/strong_migrations/migration.rb', line 11

def migrate(direction)
  @direction = direction
  super
end

#safety_assured ⇒ Object 



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# File 'lib/strong_migrations/migration.rb', line 3

def safety_assured
  previous_value = @safe
  @safe = true
  yield
ensure
  @safe = previous_value
end