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Rake task to create fixtures from test database in Rails 3.1
#put in lib/tasks/fixtures.rake
namespace :db do
namespace :fixtures do
desc 'Create YAML test fixtures from data in an existing database.
Defaults to development database. Set RAILS_ENV to override.'
task :dump => :environment do
sql = "SELECT * FROM %s"
skip_tables = ["schema_migrations"]
ActiveRecord::Base.establish_connection(:development)
(ActiveRecord::Base.connection.tables - skip_tables).each do |table_name|
#("users").each do |table_name|
i = "000"
File.open(Rails.root.to_s + "/test/fixtures/#{table_name}.yml", 'w') do |file|
data = ActiveRecord::Base.connection.select_all(sql % table_name)
file.write data.inject({}) { |hash, record|
hash["#{table_name}_#{i.succ!}"] = record
hash
}.to_yaml
end
end
end
end
end

this line #("users").each do |table_name| probably should be: #["users"].each do |table_name|, since string doesn't have each method.

Awesome! Just what I was looking for!!!! Thanks!

Pepan commented Aug 15, 2014

this lines can be improved for better database resolution

sql = "SELECT * FROM %s.%s"
data = ActiveRecord::Base.connection.select_all(sql % [ActiveRecord::Base.connection.current_database,table_name])

Great! Thanks!

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