entc/gen: add fluent-api for order options (#3449)

examples/o2obidi/ent/ent.go

@@ -65,6 +65,7 @@ func NewTxContext(parent context.Context, tx *Tx) context.Context {
 }
 
 // OrderFunc applies an ordering on the sql selector.
+// Deprecated: Use Asc/Desc functions or the package builders instead.
 type OrderFunc func(*sql.Selector)
 
 var (
@@ -83,7 +84,7 @@ func checkColumn(table, column string) error {
 }
 
 // Asc applies the given fields in ASC order.
-func Asc(fields ...string) OrderFunc {
+func Asc(fields ...string) func(*sql.Selector) {
 	return func(s *sql.Selector) {
 		for _, f := range fields {
 			if err := checkColumn(s.TableName(), f); err != nil {
@@ -95,7 +96,7 @@ func Asc(fields ...string) OrderFunc {
 }
 
 // Desc applies the given fields in DESC order.
-func Desc(fields ...string) OrderFunc {
+func Desc(fields ...string) func(*sql.Selector) {
 	return func(s *sql.Selector) {
 		for _, f := range fields {
 			if err := checkColumn(s.TableName(), f); err != nil {

examples/o2obidi/ent/user/user.go

@@ -6,6 +6,11 @@
 
 package user
 
+import (
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+)
+
 const (
 	// Label holds the string label denoting the user type in the database.
 	Label = "user"
@@ -52,3 +57,35 @@ func ValidColumn(column string) bool {
 	}
 	return false
 }
+
+// Order defines the ordering method for the User queries.
+type Order func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) Order {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByAge orders the results by the age field.
+func ByAge(opts ...sql.OrderTermOption) Order {
+	return sql.OrderByField(FieldAge, opts...).ToFunc()
+}
+
+// ByName orders the results by the name field.
+func ByName(opts ...sql.OrderTermOption) Order {
+	return sql.OrderByField(FieldName, opts...).ToFunc()
+}
+
+// BySpouseField orders the results by spouse field.
+func BySpouseField(field string, opts ...sql.OrderTermOption) Order {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newSpouseStep(), sql.OrderByField(field, opts...))
+	}
+}
+func newSpouseStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(Table, FieldID),
+		sqlgraph.Edge(sqlgraph.O2O, false, SpouseTable, SpouseColumn),
+	)
+}

examples/o2obidi/ent/user/where.go

@@ -186,11 +186,7 @@ func HasSpouse() predicate.User {
 // HasSpouseWith applies the HasEdge predicate on the "spouse" edge with a given conditions (other predicates).
 func HasSpouseWith(preds ...predicate.User) predicate.User {
 	return predicate.User(func(s *sql.Selector) {
-		step := sqlgraph.NewStep(
-			sqlgraph.From(Table, FieldID),
-			sqlgraph.To(Table, FieldID),
-			sqlgraph.Edge(sqlgraph.O2O, false, SpouseTable, SpouseColumn),
-		)
+		step := newSpouseStep()
 		sqlgraph.HasNeighborsWith(s, step, func(s *sql.Selector) {
 			for _, p := range preds {
 				p(s)

examples/o2obidi/ent/user_query.go

@@ -22,7 +22,7 @@ import (
 type UserQuery struct {
 	config
 	ctx        *QueryContext
-	order      []OrderFunc
+	order      []user.Order
 	inters     []Interceptor
 	predicates []predicate.User
 	withSpouse *UserQuery
@@ -58,7 +58,7 @@ func (uq *UserQuery) Unique(unique bool) *UserQuery {
 }
 
 // Order specifies how the records should be ordered.
-func (uq *UserQuery) Order(o ...OrderFunc) *UserQuery {
+func (uq *UserQuery) Order(o ...user.Order) *UserQuery {
 	uq.order = append(uq.order, o...)
 	return uq
 }
@@ -274,7 +274,7 @@ func (uq *UserQuery) Clone() *UserQuery {
 	return &UserQuery{
 		config:     uq.config,
 		ctx:        uq.ctx.Clone(),
-		order:      append([]OrderFunc{}, uq.order...),
+		order:      append([]user.Order{}, uq.order...),
 		inters:     append([]Interceptor{}, uq.inters...),
 		predicates: append([]predicate.User{}, uq.predicates...),
 		withSpouse: uq.withSpouse.Clone(),