Speed up seeding database in Rails application using multiple SQL inserts!
Add to Gemfile:
Seeding from CSV file
Lets say you have CSV file
Kharkov,1654 Lviv,1240 Kiev,600
You can populate DB with it using FastSeeder:
# Seeding from CSV file: FastSeeder.seed_csv!(City, "cities/ukraine.csv", :name, :founded_in, :country => "Ukraine")
Technically it equals to:
City.create(:name => "Kharkov", :founded_in => 1654, :country => "Ukraine") City.create(:name => "Lviv" , :founded_in => 1240, :country => "Ukraine") City.create(:name => "Kiev" , :founded_in => 600 , :country => "Ukraine")
But does the job faster using only one SQL query instead of three.
As you also noticed it expects you to pass model class, path to CSV file(located in
CSV columns, and default values.
Seeding in place
The next example is equivalent to showed above one, but uses inline data without CSV file:
# Seeding in place: FastSeeder.seed!(City, :name, :founded_in, :country => "Ukraine") do record "Kharkov", 1654 record "Lviv" , 1240 record "Kiev" , 600 end
Supported database adapters
- MySQL(mysql, mysql2)
rake spec:all # run specs with all supported adapters rake spec:mysql # run specs with mysql adapter rake spec:mysql2 # run specs with mysql2 adapter rake spec:postgresql # run specs with postgresql adapter rake spec:sqlite3 # run specs with sqlite3 adapter
gem "fast_seeder", "0.0.2"
- Sergey Potapov - creator and maintainer
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this program. If not, see http://www.gnu.org/licenses/lgpl.txt