feat: relation field and picker

internal/domain/entry/entryData.go

@@ -2,8 +2,11 @@ package entry
 
 import (
 	"RenewCMS/internal/domain/contenttype"
+	"fmt"
 	"reflect"
 	"sort"
+	"strconv"
+	"strings"
 )
 
 func SameValue(left any, right any) bool {
@@ -49,7 +52,7 @@ func Validate(fields []contenttype.Field, data map[string]any) error {
 
 func validateField(field contenttype.Field, data map[string]any) error {
 	value := data[field.Key]
-	if value == nil {
+	if value == nil || contenttype.EmptyRelation(field, value) {
 		if field.Required {
 			return InvalidField(field.Key, RuleRequired)
 		}
@@ -82,7 +85,7 @@ func firstUnknownField(fields []contenttype.Field, data map[string]any) error {
 func UniqueValues(fields []contenttype.Field, data map[string]any) []UniqueValue {
 	var values []UniqueValue
 	for _, field := range fields {
-		if value := data[field.Key]; field.Unique && value != nil {
+		if value := data[field.Key]; (field.Unique || field.IsExclusiveRelation()) && value != nil {
 			values = append(values, UniqueValue{Key: field.Key, Value: value})
 		}
 	}
@@ -103,3 +106,38 @@ func MissingMedia(field contenttype.Field, unchanged bool) error {
 	}
 	return InvalidField(field.Key, contenttype.RuleType)
 }
+
+func RelationIDs(fields []contenttype.Field, data map[string]any) map[string]map[uint32]bool {
+	ids := map[string]map[uint32]bool{}
+	for _, ref := range contenttype.RelationRefs(fields, data) {
+		held := make(map[uint32]bool, len(ref.IDs))
+		for _, id := range ref.IDs {
+			held[id] = true
+		}
+		ids[ref.Field.Key] = held
+	}
+	return ids
+}
+
+func MissingRelation(field contenttype.Field, unchanged bool) error {
+	return MissingMedia(field, unchanged)
+}
+
+func MatchesQuery(fields []contenttype.Field, data map[string]any, query string) bool {
+	if len(fields) == 0 {
+		return false
+	}
+	return strings.Contains(strings.ToLower(displayText(data[fields[0].Key])), strings.ToLower(query))
+}
+
+func displayText(value any) string {
+	switch typed := value.(type) {
+	case nil:
+		return ""
+	case string:
+		return typed
+	case float64:
+		return strconv.FormatFloat(typed, 'f', -1, 64)
+	}
+	return fmt.Sprint(value)
+}