normalized values on maxSelect change

models/schema/schema_field.go

@@ -321,7 +321,7 @@ func (f *SchemaField) PrepareValue(value any) any {
 		val := list.ToUniqueStringSlice(value)
 
 		options, _ := f.Options.(*SelectOptions)
-		if options.MaxSelect <= 1 {
+		if !options.IsMultiple() {
 			if len(val) > 0 {
 				return val[len(val)-1] // the last selected
 			}
@@ -333,7 +333,7 @@ func (f *SchemaField) PrepareValue(value any) any {
 		val := list.ToUniqueStringSlice(value)
 
 		options, _ := f.Options.(*FileOptions)
-		if options.MaxSelect <= 1 {
+		if !options.IsMultiple() {
 			if len(val) > 0 {
 				return val[len(val)-1] // the last selected
 			}
@@ -345,7 +345,7 @@ func (f *SchemaField) PrepareValue(value any) any {
 		ids := list.ToUniqueStringSlice(value)
 
 		options, _ := f.Options.(*RelationOptions)
-		if options.MaxSelect != nil && *options.MaxSelect <= 1 {
+		if !options.IsMultiple() {
 			if len(ids) > 0 {
 				return ids[len(ids)-1] // the last selected
 			}
@@ -399,7 +399,12 @@ func (f *SchemaField) PrepareValueWithModifier(baseValue any, modifier string, m
 
 // -------------------------------------------------------------------
 
-// FieldOptions interfaces that defines common methods that every field options struct has.
+// MultiValuer defines common interface methods that every multi-valued (eg. with MaxSelect) field option struct has.
+type MultiValuer interface {
+	IsMultiple() bool
+}
+
+// FieldOptions defines common interface methods that every field option struct has.
 type FieldOptions interface {
 	Validate() error
 }
@@ -564,6 +569,12 @@ func (o SelectOptions) Validate() error {
 	)
 }
 
+// IsMultiple implements MultiValuer interface and checks whether the
+// current field options support multiple values.
+func (o SelectOptions) IsMultiple() bool {
+	return o.MaxSelect > 1
+}
+
 // -------------------------------------------------------------------
 
 type JsonOptions struct {
@@ -575,6 +586,8 @@ func (o JsonOptions) Validate() error {
 
 // -------------------------------------------------------------------
 
+var _ MultiValuer = (*FileOptions)(nil)
+
 type FileOptions struct {
 	MaxSelect int      `form:"maxSelect" json:"maxSelect"`
 	MaxSize   int      `form:"maxSize" json:"maxSize"` // in bytes
@@ -593,8 +606,16 @@ func (o FileOptions) Validate() error {
 	)
 }
 
+// IsMultiple implements MultiValuer interface and checks whether the
+// current field options support multiple values.
+func (o FileOptions) IsMultiple() bool {
+	return o.MaxSelect > 1
+}
+
 // -------------------------------------------------------------------
 
+var _ MultiValuer = (*RelationOptions)(nil)
+
 type RelationOptions struct {
 	// CollectionId is the id of the related collection.
 	CollectionId string `form:"collectionId" json:"collectionId"`
@@ -632,6 +653,12 @@ func (o RelationOptions) Validate() error {
 	)
 }
 
+// IsMultiple implements MultiValuer interface and checks whether the
+// current field options support multiple values.
+func (o RelationOptions) IsMultiple() bool {
+	return o.MaxSelect == nil || *o.MaxSelect > 1
+}
+
 // -------------------------------------------------------------------
 
 // Deprecated: Will be removed in v0.9+

models/schema/schema_field_test.go

@@ -1983,6 +1983,28 @@ func TestSelectOptionsValidate(t *testing.T) {
 	checkFieldOptionsScenarios(t, scenarios)
 }
 
+func TestSelectOptionsIsMultiple(t *testing.T) {
+	scenarios := []struct {
+		maxSelect int
+		expect    bool
+	}{
+		{-1, false},
+		{0, false},
+		{1, false},
+		{2, true},
+	}
+
+	for i, s := range scenarios {
+		opt := schema.SelectOptions{
+			MaxSelect: s.maxSelect,
+		}
+
+		if v := opt.IsMultiple(); v != s.expect {
+			t.Errorf("[%d] Expected %v, got %v", i, s.expect, v)
+		}
+	}
+}
+
 func TestJsonOptionsValidate(t *testing.T) {
 	scenarios := []fieldOptionsScenario{
 		{
@@ -2053,6 +2075,28 @@ func TestFileOptionsValidate(t *testing.T) {
 	checkFieldOptionsScenarios(t, scenarios)
 }
 
+func TestFileOptionsIsMultiple(t *testing.T) {
+	scenarios := []struct {
+		maxSelect int
+		expect    bool
+	}{
+		{-1, false},
+		{0, false},
+		{1, false},
+		{2, true},
+	}
+
+	for i, s := range scenarios {
+		opt := schema.FileOptions{
+			MaxSelect: s.maxSelect,
+		}
+
+		if v := opt.IsMultiple(); v != s.expect {
+			t.Errorf("[%d] Expected %v, got %v", i, s.expect, v)
+		}
+	}
+}
+
 func TestRelationOptionsValidate(t *testing.T) {
 	scenarios := []fieldOptionsScenario{
 		{
@@ -2088,3 +2132,26 @@ func TestRelationOptionsValidate(t *testing.T) {
 
 	checkFieldOptionsScenarios(t, scenarios)
 }
+
+func TestRelationOptionsIsMultiple(t *testing.T) {
+	scenarios := []struct {
+		maxSelect *int
+		expect    bool
+	}{
+		{nil, true},
+		{types.Pointer(-1), false},
+		{types.Pointer(0), false},
+		{types.Pointer(1), false},
+		{types.Pointer(2), true},
+	}
+
+	for i, s := range scenarios {
+		opt := schema.RelationOptions{
+			MaxSelect: s.maxSelect,
+		}
+
+		if v := opt.IsMultiple(); v != s.expect {
+			t.Errorf("[%d] Expected %v, got %v", i, s.expect, v)
+		}
+	}
+}