Add ordering function by timestamps

Changes

1 changed files (+21/-2)

• helpers.go
  • @@ -126,7 +126,7 @@ func OnOrderedCollection(it Item, fn withOrderedCollectionFn) error {
    return fn(col) } - // OnOrderedCollectionPage + // OnOrderedCollectionPage executes a function on an ordered collection page type item func OnOrderedCollectionPage(it Item, fn withOrderedCollectionPageFn) error { if it.GetType() != OrderedCollectionPageType { return fmt.Errorf("%T[%s] can't be converted to OrderedCollection Page", it, it.GetType())
  • @@ -138,7 +138,7 @@ func OnOrderedCollectionPage(it Item, fn withOrderedCollectionPageFn) error {
    return fn(col) } - // OnItemCollection + // OnItemCollection executes a function on a collection type item func OnItemCollection(it Item, fn withItemCollectionFn) error { col, err := ToItemCollection(it) if err != nil {
  • @@ -146,3 +146,22 @@ func OnItemCollection(it Item, fn withItemCollectionFn) error {
    } return fn(col) } + + // ItemOrderTimestamp is used for ordering a ItemCollection slice using the slice.Sort function + // It orders i1 and i2 based on their Published and Updated timestamps. + func ItemOrderTimestamp(i1, i2 Item) bool { + o1, e1 := ToObject(i1) + o2, e2 := ToObject(i2) + if e1 != nil || e2 != nil { + return false + } + t1 := o1.Published + if !o1.Updated.IsZero() { + t1 = o1.Updated + } + t2 := o2.Published + if !o2.Updated.IsZero() { + t2 = o2.Updated + } + return t1.Sub(t2) > 0 + }