53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
package common
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import "strings"
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// SortConfiguration is the configuration of Sort.
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type SortConfiguration struct {
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Allowed []string // Allowed parameters
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Default string
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DefaultSorting string // if empty, DESC
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Table string
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}
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// Sort allows the request to modify how the query is sorted.
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func Sort(md MethodData, config SortConfiguration) string {
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if config.DefaultSorting == "" {
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config.DefaultSorting = "DESC"
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}
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if config.Table != "" {
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config.Table += "."
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}
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var sortBy string
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for _, s := range md.Ctx.Request.URI().QueryArgs().PeekMulti("sort") {
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sortParts := strings.Split(strings.ToLower(b2s(s)), ",")
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if contains(config.Allowed, sortParts[0]) {
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if sortBy != "" {
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sortBy += ", "
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}
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sortBy += config.Table + sortParts[0] + " "
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if len(sortParts) > 1 && contains([]string{"asc", "desc"}, sortParts[1]) {
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sortBy += sortParts[1]
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} else {
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sortBy += config.DefaultSorting
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}
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}
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}
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if sortBy == "" {
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sortBy = config.Default
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}
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if sortBy == "" {
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return ""
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}
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return "ORDER BY " + sortBy
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}
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func contains(a []string, s string) bool {
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for _, el := range a {
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if s == el {
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return true
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}
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}
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return false
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}
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