How to set defaults for ransack sorting?

问题

To put simply enough, I'd just like to know if there's a way to set defaults for the sorting functionality using the Ransack gem? ie.

Currently, I have the following when the page loads:

But instead, I'd like to have the following defaults when the page loads:

Is it possible to do this via proper configuration of the Ransack Gem?

Thanks in advance as always!

Best Regards!

回答1:

This works for me:

@search = Change.search(params[:q])
@search.sorts = 'updated_at desc' if @search.sorts.empty?

Note: I had some head scratching at first, when I had desc in uppercase – that just doesn't work.

回答2:

You can also set multiple default sorts by defining an array:

@search = Post.ransack(params[:q])  
@search.sorts = ['name asc', 'created_at desc'] if @search.sorts.empty?
@posts = @search.result.paginate(page: params[:page], per_page: 20)

https://github.com/activerecord-hackery/ransack/wiki/Sorting-in-the-Controller

来源：https://stackoverflow.com/questions/13369909/how-to-set-defaults-for-ransack-sorting