Make 'NULLS FIRST/LAST' sortings available

Sology / smart_listing

Ruby on Rails data listing gem with built-in sorting, filtering and in-place editing.

http://showcase.sology.eu/smart_listing

MIT License

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Make 'NULLS FIRST/LAST' sortings available #156

Closed Mayurifag closed 4 months ago

Mayurifag commented 5 years ago

There is no way to use NULLS LAST and NULLS FIRST sortings, except not safe :implicit setting, suggested to add these as safe sorting directions. Tiny refactoring included.