[Prototype] Sort by customer orders & lifetime value don't work

[swrobel]

https://administrate-prototype.herokuapp.com/admin/customers?direction=asc&order=orders
https://administrate-prototype.herokuapp.com/admin/customers?direction=asc&order=lifetime_value

[c-lliope]

@swrobel Thanks for pointing this out!

lifetime_value doesn't work because it's a computed value. I think we'd be able to support this without much difficulty.

orders is a has_many relationship, which is a bit trickier. Perhaps the behavior that makes the most sense would be to sort by the number of associated records?

[getaaron]

@Graysonwright For has_many relationships, sorting by the number of associated records would be a pretty good default — better than what's there now.

Might be nice to offer the option to pass in a block to handle custom sorting logic like Enumerable's sort or the option to pass in a hash with options like in ActiveRecord's order. But I don't think either of these are as important as getting some sane default sorting behavior.

[pablobm]

With #999, the default sorting became:

• has_many: by number of records.
• belongs_to: by record id.

I'm having a think around how we could provide custom, per-attribute sortings, but I think that falls outside the scope of this issue, so I'm closing.