rake db:migrate not running

[Sachin Saxena]

Hi,

I am using gem 'makara', '0.5.0' with rails 5.2.6. I get below error when I run rake db: migrate --trace
Ruby version is 2.6.2. Any help is appreciated!

arkecode@sachins:~/repository/Factory$ rake db:migrate --trace
warning: parser/current is loading parser/ruby26, which recognizes
warning: 2.6.8-compliant syntax, but you are running 2.6.2.
warning: please see https://github.com/whitequark/parser#compatibility-with-ruby-mri.
** Invoke db:migrate (first_time)
** Invoke db:load_config (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:load_config
** Execute db:migrate
** Invoke db:_dump (first_time)
** Execute db:_dump
** Invoke db:structure:dump (first_time)
** Invoke db:load_config 
** Execute db:structure:dump
rake aborted!
TypeError: no implicit conversion of nil into String
/home/arkecode/.rvm/gems/ruby-2.6.2/gems/activerecord-5.2.6/lib/active_record/tasks/postgresql_database_tasks.rb:117:in `system'
/home/arkecode/.rvm/gems/ruby-2.6.2/gems/activerecord-5.2.6/lib/active_record/tasks/postgresql_database_tasks.rb:117:in `run_cmd'
/home/arkecode/.rvm/gems/ruby-2.6.2/gems/activerecord-5.2.6/lib/active_record/tasks/postgresql_database_tasks.rb:79:in `structure_dump'
/home/arkecode/.rvm/gems/ruby-2.6.2/gems/activerecord-5.2.6/lib/active_record/tasks/database_tasks.rb:228:in `structure_dump'
/home/arkecode/.rvm/gems/ruby-2.6.2/gems/activerecord-5.2.6/lib/active_record/railties/databases.rake:287:in `block (3 levels) in <top (required)>'

[Sachin Saxena]

Actualy I found a workaround for this where I am overiding rake db:structure:dump as follows in a file lib/tasks/xyz.rake :

Rake::Task['db:structure:dump'].overwrite do
config = PostgresUtility.db_connection_config
filename = ENV['DB_STRUCTURE'] || Rails.root.join('db/structure.sql')
raise "Task not supported by #{config[:adapter]}" unless PostgresUtility.postgresql?

conf = config.stringify_keys
ENV['PGHOST'] = conf['host'] if conf['host']
ENV['PGPORT'] = conf['port'].to_s if conf['port']
ENV['PGPASSWORD'] = conf['password'].to_s if conf['password']
ENV['PGUSER'] = conf['username'].to_s if conf['username']

search_path = config[:schema_search_path]
if search_path.present?
search_path = search_path.split(',').map do |search_path_part|
"--schema=#{Shellwords.escape(search_path_part.strip)}"
end.join(' ')
end
database = PostgresUtility.db_name
pg_dump --no-tablespaces -s -x -O -f #{Shellwords.escape(filename)} #{search_path} #{Shellwords.escape(database)}
raise 'Error dumping database' if $CHILD_STATUS.exitstatus == 1

File.open(filename, 'a') { |f| f << "SET search_path TO #{ActiveRecord::Base.connection.schema_search_path};\n\n" }
File.open(filename, 'a') { |f| f << ActiveRecord::Base.connection.dump_schema_information }
end
I hope it helps anyone else facing the same issue