Menu
Does
rake db:schema:dump recreate schema.rb from migrations or the database itself?
290
It is a Ruby representation of your database; schema. rb is created by inspecting the database and expressing its structure using Ruby.
db:reset: Resets your database using your migrations for the current environment. It does this by running the db:drop , db:create , db:migrate tasks. db:rollback: Rolls the schema back to the previous version, undoing the migration that you just ran. If you want to undo previous n migrations, pass STEP=n to this task.
The answer is simple: from the database.
By the way - when you take a look into the source code of db:* tasks you can see that migration tasks calls schema:dump after the run
desc "Migrate the database (options: VERSION=x, VERBOSE=false)." task :migrate => :environment do ActiveRecord::Migration.verbose = ENV["VERBOSE"] ? ENV["VERBOSE"] == "true" : true ActiveRecord::Migrator.migrate("db/migrate/", ENV["VERSION"] ? ENV["VERSION"].to_i : nil) Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby end So the migration works in the way that it change the database and then generate schema.rb file.
132
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
