CODEWITHSUNDEEP
ruby-on-railsrubymigration
Fabiano Soriani
Fabiano Soriani

Reputation: 8562

Execute a Rake task from within migration?

I have a Rake task that loads configuration data into the DB from a file, is there a correct ruby/rails way to call it on a migration up?

My objective is to sync my team DB configs, without have to broadcast then to run the task lalala

  def self.up
    change_table :fis_situacao_fiscal do |t|
      t.remove :mostrar_endereco
      t.rename :serie, :modelo 
    end

    Faturamento::Cfop.destroy_all()
    #perform rake here !
  end

UPDATE How I do now, and works: 

system('rake sistema:load_data file=faturamento/cfop')

And this is the suggestion from @Ryan Bigg, and it's exception:

Rake::Task['rake sistema:load_data file=faturamento/cfop'].invoke()

.

==  AlterSituacaoFiscalModeloEndereco: migrating ====================
-- change_table(:fis_situacao_fiscal)
   -> 0.0014s

rake aborted!
An error has occurred, this and all later migrations canceled:

Don't know how to build task 'rake sistema:load_data file=faturamento/cfop'

Where it went wrong?

Upvotes: 58

Views: 25466

Answers (4)

Ryan Bigg
Ryan Bigg

Reputation: 107728

Yes! There is a way to do that.

Run the following command.

Rake::Task['your_task'].invoke

Updated solution

Do not put Rake inside parenthesis, just the name of the task. I recommend that you set an ENV variable when running the following in the console.

FILE=somefile.text rake db:sistema:load_data

You can call it separately using the following example.

FILE=somefile.text rake some:other:task:that:calls:it

It will be available in your tasks as ENV['file'].

Upvotes: 95

Jacob Dalton
Jacob Dalton

Reputation: 1693

You can execute a rake task from within a loaded Rails environment with either Rake::Task['namespace:task'].invoke or Rake::Task['namespace:task'].execute.

You can pass data to the task inside of the invoke or execute method. Example:

Rake::Task['namespace:task'].invoke(paramValue)

This param can be handled in the rake task as follows:

namespace :namespace do
  desc "Example description."
  task :task, [:param] => :environment do |t, args|
    puts args[:param]
    ...
  end
end

This can be executed on the console as:

bundle exec rake namespace:task[paramValue]

More info: https://medium.com/@sampatbadhe/rake-task-invoke-or-execute-419cd689c3bd

Upvotes: 7

Віталій Адамков
Віталій Адамков

Reputation: 71

This decision fits better, IMHO.

In your case it would be smth like this:

backup_env = ENV.slice('file') if ENV.key?('file')
ENV['file'] = 'faturamento/cfop'
Rake::Task['sistema:load_data'].invoke
ENV.delete 'file'
ENV.merge!(backup_env) if backup_env

Upvotes: 1

Leslie Viljoen
Leslie Viljoen

Reputation: 513

Note that if you call the Rake task with 'system', you need to check the process status afterwards and raise an exception if the Rake task failed. Otherwise the migration will succeed even if the Rake task fails.

You can check the process status like this:

if !($?.success?)
  raise "Rake task failed"
end

Invoking the rake task is a nicer option - it will cause the migration to fail if the Rake task fails.

Upvotes: 10

Related Questions