ruby - Rails scope ordered ascending not responding in view -

in model have:

default_scope -> { order(created_at: :desc) } scope :ascending, -> { order(created_at: :asc) } 

in view:

<ol class="notices comments">   <%= render notice.comments.ascending %> </ol> 

in model, when change default_scope -> { order(created_at: :desc) } default_scope -> { order(created_at: :asc) }, notices respond expected , display in ascending order instead of descending. however, when change scope :ascending, -> { order(created_at: :asc) } scope :ascending, -> { order(created_at: :desc) }, doesn't change anything. what's wrong code?

when call order, adds component order clause. if have default scope , add ascending scope, end order by:

order created_at desc, created_at asc 

the created_at asc ignored because unlikely there ties break created_at desc ordering.

you want use reorder in scope replace order by:

scope :ascending, -> { reorder(created_at: :asc) } 

this assumes ordering in effect comes default scope can lead surprises if like:

model.order(:whatever).ascending 

the order(:whatever) removed scope.

i tend think default scopes bad idea because hide things you, doubly when default scope includes order adjustments. i'd drop default scope , make callers explicitly specify ordering.