Prefer Arel based AR DSL over SQL string in scopes #411
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… ambiguous" Proposal.joins(speakers: :user).confirmed => ActiveRecord::StatementInvalid (PG::AmbiguousColumn: ERROR: column reference "confirmed_at" is ambiguous)
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Or this scope causes "PG::AmbiguousColumn: ERROR: column reference "confirmed_at" is ambiguous" when joined with another table that has
confirmed_atcolumn.Example
Proposal.joins(speakers: :user).confirmed
=> ActiveRecord::StatementInvalid (PG::AmbiguousColumn: ERROR: column reference "confirmed_at" is ambiguous)