Question

How can I display the details for a task in the same way (using my _task partial) whether the view is using @project.tasks (ie multiple) or just @task (ie individual task)?

My question is similar to this one : How can you make a ruby function accept either an individual item or collection of items and do the same thing?

I tried checking if @project.tasks.is_a? but it complained wrong number of arguments (0 for 1).

Any ideas?

Answer 1

I’m not sure what you want, but I understood that you want to render partial either collection on individual item. So if I right you should follow these steps and everything will work out of box. Let’s say you have model Project and it has_many Tasks, the steps are:

1. Rename your task partial to tasks/_task.html.erb
2. Use in view (e.g. projects/show.html.erb) render like this: <%= render @project.tasks %>
3. You able to use also render like this: <%= render @task %>

Note: solution works for Rails >= 3.