41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
package pagination
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// MarkerPage is a stricter Page interface that describes additional functionality required for use with NewMarkerPager.
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// For convenience, embed the MarkedPageBase struct.
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type MarkerPage interface {
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Page
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// LastMarker returns the last "marker" value on this page.
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LastMarker() (string, error)
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}
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// MarkerPageBase is a page in a collection that's paginated by "limit" and "marker" query parameters.
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type MarkerPageBase struct {
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PageResult
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// Owner is a reference to the embedding struct.
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Owner MarkerPage
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}
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// NextPageURL generates the URL for the page of results after this one.
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func (current MarkerPageBase) NextPageURL() (string, error) {
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currentURL := current.URL
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mark, err := current.Owner.LastMarker()
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if err != nil {
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return "", err
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}
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q := currentURL.Query()
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q.Set("marker", mark)
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currentURL.RawQuery = q.Encode()
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return currentURL.String(), nil
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}
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// GetBody returns the linked page's body. This method is needed to satisfy the
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// Page interface.
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func (current MarkerPageBase) GetBody() interface{} {
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return current.Body
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}
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