sql - Many to many relationship in RDBMS -
what happen many many relationship when going implement particular rdbms?
and things need do, when happens.
thanks!
you use associative table resolve many many relationships in rdbms.
ruby on rails - ActiveRecord order not working -
in controller, after reprioritizing "child", lists children in new order: @child.parent.children.sort_by{|g| g.priority } this, surprisingly, doesn't work: @child.parent.children.order(priority: :asc) why doesn't .order work? instead of sorting correctly, it's sorting previous order before operation run, assume it's using cached results (the query run before in operation). how 1 bust cache, if indeed problem? i've tried @child.reload after reprioritizing no avail. if have ordering on children association might try use reorder apply new ordering: @child.parent.children.reorder(priority: :asc)
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