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Rails rake tasks for dump & restore of PostgreSQL databases
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# lib/tasks/db.rake | |
namespace :db do | |
desc "Dumps the database to db/APP_NAME.dump" | |
task :dump => :environment do | |
cmd = nil | |
with_config do |app, host, db, user| | |
cmd = "pg_dump --host #{host} --username #{user} --verbose --clean --no-owner --no-acl --format=c #{db} > #{Rails.root}/db/#{app}.dump" | |
end | |
puts cmd | |
exec cmd | |
end | |
desc "Restores the database dump at db/APP_NAME.dump." | |
task :restore => :environment do | |
cmd = nil | |
with_config do |app, host, db, user| | |
cmd = "pg_restore --verbose --host #{host} --username #{user} --clean --no-owner --no-acl --dbname #{db} #{Rails.root}/db/#{app}.dump" | |
end | |
Rake::Task["db:drop"].invoke | |
Rake::Task["db:create"].invoke | |
puts cmd | |
exec cmd | |
end | |
private | |
def with_config | |
yield Rails.application.class.parent_name.underscore, | |
ActiveRecord::Base.connection_config[:host], | |
ActiveRecord::Base.connection_config[:database], | |
ActiveRecord::Base.connection_config[:username] | |
end | |
end |
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# dump the development db | |
rake db:dump | |
# dump the production db | |
RAILS_ENV=production rake db:dump | |
# dump the production db & restore it to the development db | |
RAILS_ENV=production rake db:dump | |
rake db:restore | |
# note: config/database.yml is used for database configuration, | |
# but you will be prompted for the database user's password |
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This is broken for rails 7.x because ActiveRecord::Base.connection_config interface is now changed. Here is a link to my gist which handles newer rails interface:
https://gist.github.com/amit/45e750edde94b70431f5d42caadee423