By default you’ll only get the JSON that represents modelb in your example above. But, you can tell Rails to include the other related objects as well: def export @export_data = ModelA.find(params[:id]) respond_to do |format| format.html format.json { render :json => @export_data.to_json(:include => :modelb) } end end You can even tell it to exclude certain … Read more
According to this Sidekiq documentation page to delete a job with a single id you need to iterate the queue and call .delete on it. queue = Sidekiq::Queue.new(“mailer”) queue.each do |job| job.klass # => ‘MyWorker’ job.args # => [1, 2, 3] job.delete if job.jid == ‘abcdef1234567890’ end There is also a plugin called sidekiq-status that … Read more
Put the CSS files in public/stylesheets and then use: <%= stylesheet_link_tag “filename” %> to link to the stylesheet in your layouts or erb files in your views. Similarly you put images in public/images and javascript files in public/javascripts.
For Rails6, Rails5 and Rails4 you can do the following: Put the line below at the end of your routes.rb get ‘:action’ => ‘static#:action’ Then requests to root/welcome, will render the /app/views/static/welcome.html.erb. Don’t forget to create a ‘static’ controller, even though you don’t have to put anything in there. Limitation: If somebody tries to access … Read more
I’m no expert at SQL, but why not just sort by if something is null first then sort by how you wanted to sort it. Photo.order(‘collection_id IS NULL, collection_id DESC’) # Null’s last Photo.order(‘collection_id IS NOT NULL, collection_id DESC’) # Null’s first If you are only using PostgreSQL, you can also do this Photo.order(‘collection_id DESC … Read more
en.yml log_in_message_html: “This is a text, with a %{href} inside.” log_in_href: “link” login.html.erb <p> <%= t(“log_in_message_html”, href: link_to(t(“log_in_href”), login_path)) %> </p>
In Rails 4 you can do something similar to: Model.order(foo: :asc, bar: :desc) foo and bar are columns in the db.
You better install Ruby 2.2.5 for compatibility. The Ruby version in your local machine is different from the one declared in Gemfile. If you’re using rvm: rvm install 2.2.5 rvm use 2.2.5 else if you’re using rbenv: rbenv install 2.2.5 rbenv local 2.2.5 else if you can not change ruby version by rbenv, read here
run postgres -D /usr/local/var/postgres and you should see something like: FATAL: lock file “postmaster.pid” already exists HINT: Is another postmaster (PID 379) running in data directory “/usr/local/var/postgres”? Then run kill -9 PID in HINT And you should be good to go.
For Rails 5+ Initial Definition: If you are defining your Post model table, you can set references, index and foreign_key in one line: t.references :author, index: true, foreign_key: { to_table: :users } Update Existing: If you are adding references to an existing table, you can do this: add_reference :posts, :author, foreign_key: { to_table: :users } … Read more