47 lines
1 KiB
Go
47 lines
1 KiB
Go
package search
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import (
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"reflect"
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"strings"
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"github.com/photoprism/photoprism/pkg/list"
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)
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// Cols represents a list of database columns.
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type Cols []string
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// SelectString returns the columns for a search result struct as a string.
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func SelectString(f interface{}, tags []string) string {
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return strings.Join(SelectCols(f, tags), ", ")
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}
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// SelectCols returns the columns for a search result struct.
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func SelectCols(f interface{}, tags []string) Cols {
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v := reflect.ValueOf(f)
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if v.Kind() == reflect.Ptr {
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v = v.Elem()
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}
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if v.Kind() != reflect.Struct {
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return Cols{}
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}
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cols := make(Cols, 0, v.NumField())
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// Find matching columns for struct fields.
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for i := 0; i < v.NumField(); i++ {
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s := strings.TrimSpace(v.Type().Field(i).Tag.Get("select"))
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// Serialize field values as string.
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if s == "" || s == "-" {
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continue
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} else if c := strings.Split(s, ","); c[0] == "" {
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continue
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} else if len(tags) == 0 || list.ContainsAny(c, tags) {
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cols = append(cols, c[0])
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}
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}
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return cols
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}
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