About 153 questions
Nice how can i refactor following code using map tag_clouds = {} tag_cloud_names.each do |name| tag_clouds[name] = row.field(row.index(name)).to ...
I have a ruby Hash Object retrieved from the postgresql database. hash = {"foo": bar} puts hash.foo => NoMethodError: undefined method 'foo' for {"foo ...
In JavaScript, Array.map alike methods are asynchronous. How about ruby's Array.map? How can we pass a callback block to the .map alike when it has do ...
http://stackoverflow.com/questions/7788929/how-can-i-test-signed-or-permanent-cookies-with-rspec
/Users/Username/.rvm/gems/ruby-2.3.1/gems/puma-3.4.0/lib/puma/binder.rb:255:in `initialize': Address already in use - bind(2) for "0.0.0.0" port 3000 ...
After installing redis-rails gem, I get the error message "Redis is not a module" in server logs. If you are using Rails 5, try gem "redis-rails", gi ...
While using a cache! block, I get the error message "Couldn't find template for digesting:" Github issue #1: https://github.com/rails/rails/issues/149 ...
How do I set default order for rails model when I don't want to use .order when retrieving data? You can do the following class Book < ActiveRecord:: ...
How to generate a secret and secure token in Rails? rake secret
You can use the OVER() clause in SQL. PostgreSQL has window functions counting rows before LIMIT is applied. Example: SELECT count(*) OVER() AS total_ ...
In sidekiq.yml, remove the following line: :pidfile: tmp/pids/sidekiq.pid
begin ActiveRecord::Base.transaction do user.save! # will raise exception if error exists end rescue ActiveRecord::RecordInvalid => exceptio ...
Normally, you can rescue a type of exceptions like this begin [] + '' rescue TypeError => e puts "oops: #{e.message}" end And, you can also catch ...
You can use https://github.com/flyerhzm/bullet#run-in-tests and following the instructions under "Run in tests". Bullet gem will raise errors like Bul ...
How do you test rails controller's redirect_to in Rspec? In Rspec, get :authorize expect(response).to redirect_to('/url/of/your/choice')
$ rails c $ require 'sidekiq/api' $ Sidekiq::RetrySet.new.size # Check the size of the queue by using the size method $ Sidekiq::RetrySet.new.clear # ...
You can get all enqueue_jobs from ActiveJob ActiveJob::Base.queue_adapter.enqueued_jobs The code above will return all the enqueue jobs, which retur ...
How to write a script for making entries in rails. You can add a task in the lib/tasks folder For example lib/tasks/task_name.rake, task :task_name ...
You change change the index name to be shorter or equal to 63 characters add_index :table_name, ["column_name_1", "column_name_2", "column_name_3", "c ...
You can use class ClassName < ApplicationRecord validates :column_name, inclusion: { in: %w(restrict_text_1, restrict_text_2, restrict_text_3) } e ...
Cohort 89 begins on May 6th, 2024
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