ActiveRecord Monkey Patch to make Rails 5 dump DB agnostic format (2 of 2)

schema_dumper_2_of_2.rb

# config/initializers/active_record/connection_adapters/abstract/schema_dumper.rb

# DANGER, Will Robinson!!!
#
# This is a monkey patch for Rails 5.0 ONLY
#
if Rails.version !~ /^5.0/ # code taken from 5.0.6

            puts "\n
--------------------------------------------------------------------------------
WARNING: you are using Rails version #{Rails.version}
         Please double check that the monkey-patch for Schema Dumping still works!
         see: \"#{__FILE__}\"
--------------------------------------------------------------------------------
"

else

  module ActiveRecord
    module ConnectionAdapters # :nodoc:

      module ColumnDumper
        def prepare_column_options(column) # code taken from 5.0.6
          spec = {}

          # if limit = schema_limit(column)
          #   spec[:limit] = limit
          # end
          #

          # --- vvvvvvv ADDED LINES vvvvvvv  ---------------------------------
          # we are only ever dumping from MySQL:
          types = ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter::NATIVE_DATABASE_TYPES.deep_dup
          types[:boolean].delete(:limit) # don't dump limit for boolean; SEE: https://stackoverflow.com/questions/32009672/limit-1-difference-in-schema-rb-boolean-fields

          # ALWAYS dump the limit, even if it is the default value
          limit = column.limit || types[column.type][:limit]
          spec[:limit]     = limit.inspect if limit
          # --- ^^^^^^^ ADDED LINES ^^^^^^^  ---------------------------------

          if precision = schema_precision(column)
            spec[:precision] = precision
          end

          if scale = schema_scale(column)
            spec[:scale] = scale
          end

          default = schema_default(column) if column.has_default?
          spec[:default]   = default unless default.nil?

          spec[:null] = 'false' unless column.null

          if collation = schema_collation(column)
            spec[:collation] = collation
          end

          spec[:comment] = column.comment.inspect if column.comment.present?

          spec
        end
      end

    end
  end

end