I am trying to call rake task in one of my methods of controller. The action is getting executed the method is also getting redirected but my rake task is not working. I have tried everything system, backticks, calling another model method etc. But its not at all working. And its happening only in production in development it works fine. I have no clue what is wrong. Thanks in advance.
`rake maintenance:sidekiq:print`
or
system('rake maintenance:sidekiq:print')
Not sure how you are calling the task, but there are couple of ways
system "rake task_name"
Else you can do something like
require 'rake'
Rake::Task["task_name"].invoke
It works for me .
Related
I have run into a very strange problem. I have a task which resets my database as so:
task :reset => [:drop, :create, :migrate, :seed]
The problem is, I am receiving errors when seeding because of missing columns which are added in late migration files. One example:
undefined method new_attr= for User
Yet this attribute is already added in a migration. The strange part is, I receive no errors if I run the above tasks separately. Can anybody shed some light? Surely these tasks cannot be run asynchronously.
Another way to avoid errors is to amend my earlier migrations create_ with the new attributes. Then running :reset doesn't trigger errors for those attributes.
The migrations are clearly fine as I can run the above tasks separately, just not bundled under a single task.
maybe you want to make your reset task more explicit?
namespace :db_tasks do
desc "Rebuild development db"
task :rebuild_database, [] => :environment do
raise "Only run in development or staging" if Rails.env.production?
Rake::Task['db:drop'].execute
Rake::Task['db:create'].execute
Rake::Task['db:migrate'].execute
Rake::Task['db:seed'].execute
Rake::Task['db:test:prepare'].execute
end
end
Probably your problem is already solved using this:
rake db:reset
The rake db:reset task will drop the database, recreate it and load the current schema into it.
Have you tried with namespace?
task :reset => [db:drop, db:create, db:migrate, db:seed]
If these rake tasks are executed in the production mode,
model attributes are cached. Even though migrations work perfect, it wont apply to the cached.
This will break your succeeding seed as newly added columns will be missing in the cache.
A possible solution is to reload your rails environment before seeding.
I am following through a simple tutorial and running into the following issue;
Task.create task: 'This is my task'
Returns an error when rspec tries to run it;
ActiveRecord::StatementInvalid:
Could not find table 'tasks'
But when I call the exact same line from the rails console or from a controller the task is created and I am able to see the new row from within the rails console.
Initially I thought it was maybe something going weird with guard, because I have noticed a few odd things (Ctrl+C doesn't kill it for one) but I decided to run the test directly using rspec and it returns the same result.
Any help would be greatly appreciated.
You have to set up and prepare your db first and you can do that by running rake db:test:prepare
I have some problems with one of gem supporting ActiveModel caching. When I'm using observer for cached model, during application initialization it tries to describe table to get all fields names.
The same thing is done when rake task is running, including db:migration. In that case there is some circular reference error. I'd like to detect current rake task, to skip gem initialization, but I don't know how to find out was code invoked through rake task. How to check it?
I dont get exactly what you are trying to do, but here is an example of getting the task name.
task :testing do |task_name|
puts task_name
end
This question has been asked a few places, and I didn't think any of the answers were very good... I think the answer is to check Rake.application.top_level_tasks, which is a list of tasks that will be run. Rake doesn't necessarily run just one task.
If you run your task via rake task or bundle exec rake task you can check it in your initializer simply by:
if $0.end_with?('rake')
# rake stuff
else
# non-rake stuff
end
You can use $PROGRAM_NAME instead of $0 if you like.
This is a 2nd part to the following question:
Where to put model "utility" functions in Ruby on Rails
Problem is, I need access to these utility functions from a rake task as well. Using the accepted technique in in the other thread, I get an "undefined method" error when accessing my model from a rake task.
What is the best way to fix this?
Thanks
You probably need to define your rake task as dependent on the Rails environment:
task :my_task => :environment do
# Will load Rails stack before executing this block
MyModel.foo
end
The default behavior is to load almost nothing, so you won't have access to your models unless you ask for it.
I want to run a method, on the startup of the rails server. It's a model method.
I tried using config/initializers/myfile.rb, but the method was invoked during migrations, so it SELECTed from a nonexistant table.
Tried environment.rb also, but the class does not exist yet (and will probably have the same problem with migrations)
I don't know where to put that method, so it'll run only on server startup and not during migrations.
There are some things you could do to actually improve this a bit. The issue is that you are running this code when rake loads your environment, but you really only want to run this when the environment is loaded by an instance of your web server. One way to get around this is to set a value when rake loads your environment, and when that value is set, to not execute your initializer code. You can do this as follows:
task :environment => :disable_initializer
task :disable_initializer do
ENV['DISABLE_INITIALIZER_FROM_RAKE'] = 'true'
end
#In your initializer:
ENV['DISABLE_INITIALIZER_FROM_RAKE'] || MyModel.method_call
There is no way to avoid this from my understanding. You can put the initializer code that relies on the new table in a rescue block to quiet things down so others can run migrations.
Try putting your method call in boot.rb, in the run method after the Rails::initializer call. I don't have rails in front of me right now because I'm at work but I think that the whole environment should be loaded by that point and you can run methods on the framework.
I found this to work quite well:
if File.basename($0) == "rails" && ARGV == []
It also detects "rails generate .."