Question

Hello I’d like to sort an array in a Rails Controller. I want to sort the array before I loop over it in the View

@projects = Project.all.sort #throws error
#and
@projects = Project.all
@projects.sort               # throws error

throws this error: undefined method <=> for #<Project:0x101f70b28>
but when I query:

@projects.respond_to?('sort')

I get true

How can I sort the array? Should it be done in the View or in the Controller?
Any help is highly appreciated!

Answer 1

Ruby doesn’t know how to sort your project. You must specify the field to use for the sort. Example for created_at:

@projects = Project.all.sort { |p1, p2| p1.created_at <=> p2.created_at }

or

@projects = Project.all.sort_by &:created_at

Alternatively, you can sort them at database level:

@projects = Project.find(:all, :order => 'created_at')