From 12d58e4d08bfe2ddf92866e6759486b5d0fcb28c Mon Sep 17 00:00:00 2001
From: John <john@johng.cn>
Date: Sun, 5 Jul 2020 11:54:37 +0800
Subject: [PATCH] add ScanList feature for gdb.Model

---
 database/gdb/gdb_func.go                  |   7 +
 database/gdb/gdb_model_select.go          |  30 +++
 database/gdb/gdb_type_result.go           | 212 -------------------
 database/gdb/gdb_type_result_scanlist.go  | 245 ++++++++++++++++++++++
 database/gdb/gdb_z_init_test.go           |   4 +-
 database/gdb/gdb_z_mysql_internal_test.go |   4 +-
 database/gdb/gdb_z_mysql_relation_test.go |  57 ++++-
 7 files changed, 334 insertions(+), 225 deletions(-)
 create mode 100644 database/gdb/gdb_type_result_scanlist.go

diff --git a/database/gdb/gdb_func.go b/database/gdb/gdb_func.go
index 032ab1b5c..9286d7c0e 100644
--- a/database/gdb/gdb_func.go
+++ b/database/gdb/gdb_func.go
@@ -13,6 +13,7 @@ import (
 	"github.com/gogf/gf/internal/empty"
 	"github.com/gogf/gf/internal/utils"
 	"github.com/gogf/gf/os/gtime"
+	"github.com/gogf/gf/util/gutil"
 	"reflect"
 	"regexp"
 	"strings"
@@ -56,6 +57,12 @@ var (
 	quoteWordReg = regexp.MustCompile(`^[a-zA-Z0-9\-_]+$`)
 )
 
+// ListItemValues is alias for gutil.ListItemValues.
+// See gutil.ListItemValues.
+func ListItemValues(list interface{}, key interface{}, subKey ...interface{}) (values []interface{}) {
+	return gutil.ListItemValues(list, key, subKey...)
+}
+
 // GetInsertOperationByOption returns proper insert option with given parameter <option>.
 func GetInsertOperationByOption(option int) string {
 	var operator string
diff --git a/database/gdb/gdb_model_select.go b/database/gdb/gdb_model_select.go
index 2fea75fe5..8fd4346dd 100644
--- a/database/gdb/gdb_model_select.go
+++ b/database/gdb/gdb_model_select.go
@@ -234,6 +234,36 @@ func (m *Model) Scan(pointer interface{}, where ...interface{}) error {
 	}
 }
 
+// ScanList converts <r> to struct slice which contains other complex struct attributes.
+// Note that the parameter <listPointer> should be type of *[]struct/*[]*struct.
+// Usage example:
+//
+// type Entity struct {
+// 	   User       *EntityUser
+// 	   UserDetail *EntityUserDetail
+//	   UserScores []*EntityUserScores
+// }
+// var users []*Entity
+// or
+// var users []Entity
+//
+// ScanList(&users, "User")
+// ScanList(&users, "UserDetail", "User", "uid:Uid")
+// ScanList(&users, "UserScores", "User", "uid:Uid")
+// The parameters "User"/"UserDetail"/"UserScores" in the example codes specify the target attribute struct
+// that current result will be bound to.
+// The "uid" in the example codes is the table field name of the result, and the "Uid" is the relational
+// struct attribute name. It automatically calculates the HasOne/HasMany relationship with given <relation>
+// parameter.
+// See the example or unit testing cases for clear understanding for this function.
+func (m *Model) ScanList(listPointer interface{}, attributeName string, relation ...string) (err error) {
+	all, err := m.All()
+	if err != nil {
+		return err
+	}
+	return all.ScanList(listPointer, attributeName, relation...)
+}
+
 // Count does "SELECT COUNT(x) FROM ..." statement for the model.
 // The optional parameter <where> is the same as the parameter of Model.Where function,
 // see Model.Where.
diff --git a/database/gdb/gdb_type_result.go b/database/gdb/gdb_type_result.go
index 0e6a4d8b5..62f4ee4dc 100644
--- a/database/gdb/gdb_type_result.go
+++ b/database/gdb/gdb_type_result.go
@@ -8,12 +8,8 @@ package gdb
 
 import (
 	"database/sql"
-	"errors"
 	"fmt"
 	"github.com/gogf/gf/container/gvar"
-	"github.com/gogf/gf/text/gstr"
-	"github.com/gogf/gf/util/gconv"
-	"github.com/gogf/gf/util/gutil"
 	"math"
 	"reflect"
 
@@ -245,211 +241,3 @@ func (r Result) Structs(pointer interface{}) (err error) {
 	reflect.ValueOf(pointer).Elem().Set(array)
 	return nil
 }
-
-// ScanList converts <r> to struct slice which contains other complex struct attributes.
-// Note that the parameter <listPointer> should be type of *[]struct/*[]*struct.
-func (r Result) ScanList(listPointer interface{}, attributeName string, relation ...string) (err error) {
-	// Necessary checks for parameters.
-	if attributeName == "" {
-		return errors.New(`attributeName should not be empty`)
-	}
-	if len(relation) > 0 {
-		if len(relation) < 2 {
-			return errors.New(`relation name and key should are both necessary`)
-		}
-		if relation[0] == "" || relation[1] == "" {
-			return errors.New(`relation name and key should not be empty`)
-		}
-	}
-
-	var (
-		reflectValue = reflect.ValueOf(listPointer)
-		reflectKind  = reflectValue.Kind()
-	)
-	if reflectKind == reflect.Interface {
-		reflectValue = reflectValue.Elem()
-		reflectKind = reflectValue.Kind()
-	}
-	if reflectKind != reflect.Ptr {
-		return fmt.Errorf("parameter should be type of *[]struct/*[]*struct, but got: %v", reflectKind)
-	}
-	reflectValue = reflectValue.Elem()
-	reflectKind = reflectValue.Kind()
-	if reflectKind != reflect.Slice && reflectKind != reflect.Array {
-		return fmt.Errorf("parameter should be type of *[]struct/*[]*struct, but got: %v", reflectKind)
-	}
-	length := len(r)
-	if length == 0 {
-		// The pointed slice is not empty.
-		if reflectValue.Len() > 0 {
-			// It here checks if it has struct item, which is already initialized.
-			// It then returns error to warn the developer its empty and no conversion.
-			if v := reflectValue.Index(0); v.Kind() != reflect.Ptr {
-				return sql.ErrNoRows
-			}
-		}
-		// Do nothing for empty struct slice.
-		return nil
-	}
-	var (
-		arrayValue    reflect.Value // Like: []*Entity
-		arrayItemType reflect.Type  // Like: *Entity
-		reflectType   = reflect.TypeOf(listPointer)
-	)
-	if reflectValue.Len() > 0 {
-		arrayValue = reflectValue
-	} else {
-		arrayValue = reflect.MakeSlice(reflectType.Elem(), length, length)
-	}
-
-	// Slice element item.
-	arrayItemType = arrayValue.Index(0).Type()
-
-	// Relation variables.
-	var (
-		relationDataMap   map[string]Value
-		relationFieldName string
-		relationAttrName  string
-	)
-	if len(relation) > 0 {
-		array := gstr.Split(relation[1], ":")
-		if len(array) > 1 {
-			// Defined table field to relation attribute name.
-			// Like:
-			// uid:Uid
-			// uid:UserId
-			relationFieldName = array[0]
-			relationAttrName = array[1]
-		} else {
-			relationAttrName = relation[1]
-			// Find the possible map key by given only struct attribute name.
-			// Like:
-			// Uid
-			if k, _ := gutil.MapPossibleItemByKey(r[0].Map(), relation[1]); k != "" {
-				relationFieldName = k
-			}
-		}
-		if relationFieldName != "" {
-			relationDataMap = r.MapKeyValue(relationFieldName)
-		}
-		if len(relationDataMap) == 0 {
-			return fmt.Errorf(`cannot find the relation data map, maybe invalid relation key given: %s`, relation[1])
-		}
-	}
-	// Bind to target attribute.
-	var (
-		ok        bool
-		attrValue reflect.Value
-		attrKind  reflect.Kind
-		attrType  reflect.Type
-		attrField reflect.StructField
-	)
-	if arrayItemType.Kind() == reflect.Ptr {
-		if attrField, ok = arrayItemType.Elem().FieldByName(attributeName); !ok {
-			return fmt.Errorf(`invalid field name: %s`, attributeName)
-		}
-	} else {
-		if attrField, ok = arrayItemType.FieldByName(attributeName); !ok {
-			return fmt.Errorf(`invalid field name: %s`, attributeName)
-		}
-	}
-	attrType = attrField.Type
-	attrKind = attrType.Kind()
-
-	// Bind to relation conditions.
-	var (
-		relationValue reflect.Value
-		relationField reflect.Value
-	)
-	for i := 0; i < arrayValue.Len(); i++ {
-		arrayElemValue := arrayValue.Index(i)
-		// The FieldByName should be called on non-pointer reflect.Value.
-		if arrayElemValue.Kind() == reflect.Ptr {
-			// Like: []*Entity
-			arrayElemValue = arrayElemValue.Elem()
-			if !arrayElemValue.IsValid() {
-				// The element is nil, then create one and set it to the slice.
-				// The "reflect.New(itemType.Elem())" creates a new element and returns the address of it.
-				// For example:
-				// reflect.New(itemType.Elem())        => *Entity
-				// reflect.New(itemType.Elem()).Elem() => Entity
-				arrayElemValue = reflect.New(arrayItemType.Elem()).Elem()
-				arrayValue.Index(i).Set(arrayElemValue.Addr())
-			}
-		} else {
-			// Like: []Entity
-		}
-		attrValue = arrayElemValue.FieldByName(attributeName)
-		if len(relation) > 0 {
-			relationValue = arrayElemValue.FieldByName(relation[0])
-			if relationValue.Kind() == reflect.Ptr {
-				relationValue = relationValue.Elem()
-			}
-		}
-		if len(relationDataMap) > 0 && !relationValue.IsValid() {
-			return fmt.Errorf(`invalid relation: %s, %s`, relation[0], relation[1])
-		}
-		switch attrKind {
-		case reflect.Array, reflect.Slice:
-			if len(relationDataMap) > 0 {
-				relationField = relationValue.FieldByName(relationAttrName)
-				if relationField.IsValid() {
-					if err = gconv.Structs(
-						relationDataMap[gconv.String(relationField.Interface())],
-						attrValue.Addr(),
-					); err != nil {
-						return err
-					}
-				} else {
-					// May be the attribute does not exist yet.
-					return fmt.Errorf(`invalid relation: %s, %s`, relation[0], relation[1])
-				}
-			} else {
-				return fmt.Errorf(`relationKey should not be empty as field "%s" is slice`, attributeName)
-			}
-
-		case reflect.Ptr:
-			e := reflect.New(attrType.Elem()).Elem()
-			if len(relationDataMap) > 0 {
-				relationField = relationValue.FieldByName(relationAttrName)
-				if relationField.IsValid() {
-					if err = gconv.Struct(relationDataMap[gconv.String(relationField.Interface())], e); err != nil {
-						return err
-					}
-				} else {
-					// May be the attribute does not exist yet.
-					return fmt.Errorf(`invalid relation: %s, %s`, relation[0], relation[1])
-				}
-			} else {
-				if err = gconv.Struct(r[i], e); err != nil {
-					return err
-				}
-			}
-			attrValue.Set(e.Addr())
-
-		case reflect.Struct:
-			e := reflect.New(attrType).Elem()
-			if len(relationDataMap) > 0 {
-				relationField = relationValue.FieldByName(relationAttrName)
-				if relationField.IsValid() {
-					if err = gconv.Struct(relationDataMap[gconv.String(relationField.Interface())], e); err != nil {
-						return err
-					}
-				} else {
-					// May be the attribute does not exist yet.
-					return fmt.Errorf(`invalid relation: %s, %s`, relation[0], relation[1])
-				}
-			} else {
-				if err = gconv.Struct(r[i], e); err != nil {
-					return err
-				}
-			}
-			attrValue.Set(e)
-
-		case reflect.Map:
-			// TODO
-		}
-	}
-	reflect.ValueOf(listPointer).Elem().Set(arrayValue)
-	return nil
-}
diff --git a/database/gdb/gdb_type_result_scanlist.go b/database/gdb/gdb_type_result_scanlist.go
new file mode 100644
index 000000000..6e1582d8d
--- /dev/null
+++ b/database/gdb/gdb_type_result_scanlist.go
@@ -0,0 +1,245 @@
+// Copyright 2020 gf Author(https://github.com/gogf/gf). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package gdb
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"github.com/gogf/gf/text/gstr"
+	"github.com/gogf/gf/util/gconv"
+	"github.com/gogf/gf/util/gutil"
+	"reflect"
+)
+
+// ScanList converts <r> to struct slice which contains other complex struct attributes.
+// Note that the parameter <listPointer> should be type of *[]struct/*[]*struct.
+// Usage example:
+//
+// type Entity struct {
+// 	   User       *EntityUser
+// 	   UserDetail *EntityUserDetail
+//	   UserScores []*EntityUserScores
+// }
+// var users []*Entity
+// or
+// var users []Entity
+//
+// ScanList(&users, "User")
+// ScanList(&users, "UserDetail", "User", "uid:Uid")
+// ScanList(&users, "UserScores", "User", "uid:Uid")
+// The parameters "User"/"UserDetail"/"UserScores" in the example codes specify the target attribute struct
+// that current result will be bound to.
+// The "uid" in the example codes is the table field name of the result, and the "Uid" is the relational
+// struct attribute name. It automatically calculates the HasOne/HasMany relationship with given <relation>
+// parameter.
+// See the example or unit testing cases for clear understanding for this function.
+func (r Result) ScanList(listPointer interface{}, attributeName string, relation ...string) (err error) {
+	// Necessary checks for parameters.
+	if attributeName == "" {
+		return errors.New(`attributeName should not be empty`)
+	}
+	if len(relation) > 0 {
+		if len(relation) < 2 {
+			return errors.New(`relation name and key should are both necessary`)
+		}
+		if relation[0] == "" || relation[1] == "" {
+			return errors.New(`relation name and key should not be empty`)
+		}
+	}
+
+	var (
+		reflectValue = reflect.ValueOf(listPointer)
+		reflectKind  = reflectValue.Kind()
+	)
+	if reflectKind == reflect.Interface {
+		reflectValue = reflectValue.Elem()
+		reflectKind = reflectValue.Kind()
+	}
+	if reflectKind != reflect.Ptr {
+		return fmt.Errorf("parameter should be type of *[]struct/*[]*struct, but got: %v", reflectKind)
+	}
+	reflectValue = reflectValue.Elem()
+	reflectKind = reflectValue.Kind()
+	if reflectKind != reflect.Slice && reflectKind != reflect.Array {
+		return fmt.Errorf("parameter should be type of *[]struct/*[]*struct, but got: %v", reflectKind)
+	}
+	length := len(r)
+	if length == 0 {
+		// The pointed slice is not empty.
+		if reflectValue.Len() > 0 {
+			// It here checks if it has struct item, which is already initialized.
+			// It then returns error to warn the developer its empty and no conversion.
+			if v := reflectValue.Index(0); v.Kind() != reflect.Ptr {
+				return sql.ErrNoRows
+			}
+		}
+		// Do nothing for empty struct slice.
+		return nil
+	}
+	var (
+		arrayValue    reflect.Value // Like: []*Entity
+		arrayItemType reflect.Type  // Like: *Entity
+		reflectType   = reflect.TypeOf(listPointer)
+	)
+	if reflectValue.Len() > 0 {
+		arrayValue = reflectValue
+	} else {
+		arrayValue = reflect.MakeSlice(reflectType.Elem(), length, length)
+	}
+
+	// Slice element item.
+	arrayItemType = arrayValue.Index(0).Type()
+
+	// Relation variables.
+	var (
+		relationDataMap   map[string]Value
+		relationFieldName string
+		relationAttrName  string
+	)
+	if len(relation) > 0 {
+		array := gstr.Split(relation[1], ":")
+		if len(array) > 1 {
+			// Defined table field to relation attribute name.
+			// Like:
+			// uid:Uid
+			// uid:UserId
+			relationFieldName = array[0]
+			relationAttrName = array[1]
+		} else {
+			relationAttrName = relation[1]
+			// Find the possible map key by given only struct attribute name.
+			// Like:
+			// Uid
+			if k, _ := gutil.MapPossibleItemByKey(r[0].Map(), relation[1]); k != "" {
+				relationFieldName = k
+			}
+		}
+		if relationFieldName != "" {
+			relationDataMap = r.MapKeyValue(relationFieldName)
+		}
+		if len(relationDataMap) == 0 {
+			return fmt.Errorf(`cannot find the relation data map, maybe invalid relation key given: %s`, relation[1])
+		}
+	}
+	// Bind to target attribute.
+	var (
+		ok        bool
+		attrValue reflect.Value
+		attrKind  reflect.Kind
+		attrType  reflect.Type
+		attrField reflect.StructField
+	)
+	if arrayItemType.Kind() == reflect.Ptr {
+		if attrField, ok = arrayItemType.Elem().FieldByName(attributeName); !ok {
+			return fmt.Errorf(`invalid field name: %s`, attributeName)
+		}
+	} else {
+		if attrField, ok = arrayItemType.FieldByName(attributeName); !ok {
+			return fmt.Errorf(`invalid field name: %s`, attributeName)
+		}
+	}
+	attrType = attrField.Type
+	attrKind = attrType.Kind()
+
+	// Bind to relation conditions.
+	var (
+		relationValue reflect.Value
+		relationField reflect.Value
+	)
+	for i := 0; i < arrayValue.Len(); i++ {
+		arrayElemValue := arrayValue.Index(i)
+		// The FieldByName should be called on non-pointer reflect.Value.
+		if arrayElemValue.Kind() == reflect.Ptr {
+			// Like: []*Entity
+			arrayElemValue = arrayElemValue.Elem()
+			if !arrayElemValue.IsValid() {
+				// The element is nil, then create one and set it to the slice.
+				// The "reflect.New(itemType.Elem())" creates a new element and returns the address of it.
+				// For example:
+				// reflect.New(itemType.Elem())        => *Entity
+				// reflect.New(itemType.Elem()).Elem() => Entity
+				arrayElemValue = reflect.New(arrayItemType.Elem()).Elem()
+				arrayValue.Index(i).Set(arrayElemValue.Addr())
+			}
+		} else {
+			// Like: []Entity
+		}
+		attrValue = arrayElemValue.FieldByName(attributeName)
+		if len(relation) > 0 {
+			relationValue = arrayElemValue.FieldByName(relation[0])
+			if relationValue.Kind() == reflect.Ptr {
+				relationValue = relationValue.Elem()
+			}
+		}
+		if len(relationDataMap) > 0 && !relationValue.IsValid() {
+			return fmt.Errorf(`invalid relation: %s, %s`, relation[0], relation[1])
+		}
+		switch attrKind {
+		case reflect.Array, reflect.Slice:
+			if len(relationDataMap) > 0 {
+				relationField = relationValue.FieldByName(relationAttrName)
+				if relationField.IsValid() {
+					if err = gconv.Structs(
+						relationDataMap[gconv.String(relationField.Interface())],
+						attrValue.Addr(),
+					); err != nil {
+						return err
+					}
+				} else {
+					// May be the attribute does not exist yet.
+					return fmt.Errorf(`invalid relation: %s, %s`, relation[0], relation[1])
+				}
+			} else {
+				return fmt.Errorf(`relationKey should not be empty as field "%s" is slice`, attributeName)
+			}
+
+		case reflect.Ptr:
+			e := reflect.New(attrType.Elem()).Elem()
+			if len(relationDataMap) > 0 {
+				relationField = relationValue.FieldByName(relationAttrName)
+				if relationField.IsValid() {
+					if err = gconv.Struct(relationDataMap[gconv.String(relationField.Interface())], e); err != nil {
+						return err
+					}
+				} else {
+					// May be the attribute does not exist yet.
+					return fmt.Errorf(`invalid relation: %s, %s`, relation[0], relation[1])
+				}
+			} else {
+				if err = gconv.Struct(r[i], e); err != nil {
+					return err
+				}
+			}
+			attrValue.Set(e.Addr())
+
+		case reflect.Struct:
+			e := reflect.New(attrType).Elem()
+			if len(relationDataMap) > 0 {
+				relationField = relationValue.FieldByName(relationAttrName)
+				if relationField.IsValid() {
+					if err = gconv.Struct(relationDataMap[gconv.String(relationField.Interface())], e); err != nil {
+						return err
+					}
+				} else {
+					// May be the attribute does not exist yet.
+					return fmt.Errorf(`invalid relation: %s, %s`, relation[0], relation[1])
+				}
+			} else {
+				if err = gconv.Struct(r[i], e); err != nil {
+					return err
+				}
+			}
+			attrValue.Set(e)
+
+		case reflect.Map:
+			// TODO
+		}
+	}
+	reflect.ValueOf(listPointer).Elem().Set(arrayValue)
+	return nil
+}
diff --git a/database/gdb/gdb_z_init_test.go b/database/gdb/gdb_z_init_test.go
index 7ece32965..b635417d8 100644
--- a/database/gdb/gdb_z_init_test.go
+++ b/database/gdb/gdb_z_init_test.go
@@ -23,8 +23,8 @@ const (
 	SCHEMA1 = "test1"
 	SCHEMA2 = "test2"
 	PREFIX1 = "gf_"
-	USER    = "john"
-	PASS    = "Nantish1986!"
+	USER    = "root"
+	PASS    = "12345678"
 )
 
 var (
diff --git a/database/gdb/gdb_z_mysql_internal_test.go b/database/gdb/gdb_z_mysql_internal_test.go
index dfb561dad..969ee346a 100644
--- a/database/gdb/gdb_z_mysql_internal_test.go
+++ b/database/gdb/gdb_z_mysql_internal_test.go
@@ -16,8 +16,8 @@ import (
 
 const (
 	SCHEMA = "test_internal"
-	USER   = "john"
-	PASS   = "Nantish1986!"
+	USER   = "root"
+	PASS   = "12345678"
 )
 
 var (
diff --git a/database/gdb/gdb_z_mysql_relation_test.go b/database/gdb/gdb_z_mysql_relation_test.go
index 4f455b888..1a7835b60 100644
--- a/database/gdb/gdb_z_mysql_relation_test.go
+++ b/database/gdb/gdb_z_mysql_relation_test.go
@@ -8,9 +8,9 @@ package gdb_test
 
 import (
 	"fmt"
+	"github.com/gogf/gf/database/gdb"
 	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/util/gconv"
-	"github.com/gogf/gf/util/gutil"
 	"testing"
 
 	"github.com/gogf/gf/os/gtime"
@@ -131,14 +131,14 @@ CREATE TABLE %s (
 		t.Assert(users[0].User, &EntityUser{3, "name_3"})
 		t.Assert(users[1].User, &EntityUser{4, "name_4"})
 		// Detail
-		all, err = db.Table(tableUserDetail).Where("uid", gutil.ListItemValues(users, "User", "Uid")).Order("uid asc").All()
+		all, err = db.Table(tableUserDetail).Where("uid", gdb.ListItemValues(users, "User", "Uid")).Order("uid asc").All()
 		gtest.Assert(err, nil)
 		err = all.ScanList(&users, "UserDetail", "User", "uid:Uid")
 		t.Assert(err, nil)
 		t.Assert(users[0].UserDetail, &EntityUserDetail{3, "address_3"})
 		t.Assert(users[1].UserDetail, &EntityUserDetail{4, "address_4"})
 		// Scores
-		all, err = db.Table(tableUserScores).Where("uid", gutil.ListItemValues(users, "User", "Uid")).Order("id asc").All()
+		all, err = db.Table(tableUserScores).Where("uid", gdb.ListItemValues(users, "User", "Uid")).Order("id asc").All()
 		gtest.Assert(err, nil)
 		err = all.ScanList(&users, "UserScores", "User", "uid:Uid")
 		t.Assert(err, nil)
@@ -164,14 +164,14 @@ CREATE TABLE %s (
 		t.Assert(users[0].User, &EntityUser{3, "name_3"})
 		t.Assert(users[1].User, &EntityUser{4, "name_4"})
 		// Detail
-		all, err = db.Table(tableUserDetail).Where("uid", gutil.ListItemValues(users, "User", "Uid")).Order("uid asc").All()
+		all, err = db.Table(tableUserDetail).Where("uid", gdb.ListItemValues(users, "User", "Uid")).Order("uid asc").All()
 		gtest.Assert(err, nil)
 		err = all.ScanList(&users, "UserDetail", "User", "uid:Uid")
 		t.Assert(err, nil)
 		t.Assert(users[0].UserDetail, &EntityUserDetail{3, "address_3"})
 		t.Assert(users[1].UserDetail, &EntityUserDetail{4, "address_4"})
 		// Scores
-		all, err = db.Table(tableUserScores).Where("uid", gutil.ListItemValues(users, "User", "Uid")).Order("id asc").All()
+		all, err = db.Table(tableUserScores).Where("uid", gdb.ListItemValues(users, "User", "Uid")).Order("id asc").All()
 		gtest.Assert(err, nil)
 		err = all.ScanList(&users, "UserScores", "User", "uid:Uid")
 		t.Assert(err, nil)
@@ -215,14 +215,14 @@ CREATE TABLE %s (
 		t.Assert(users[0].User, &EntityUser{3, "name_3"})
 		t.Assert(users[1].User, &EntityUser{4, "name_4"})
 		// Detail
-		all, err = db.Table(tableUserDetail).Where("uid", gutil.ListItemValues(users, "User", "Uid")).Order("uid asc").All()
+		all, err = db.Table(tableUserDetail).Where("uid", gdb.ListItemValues(users, "User", "Uid")).Order("uid asc").All()
 		gtest.Assert(err, nil)
 		err = all.ScanList(&users, "UserDetail", "User", "uid:Uid")
 		t.Assert(err, nil)
 		t.Assert(users[0].UserDetail, &EntityUserDetail{3, "address_3"})
 		t.Assert(users[1].UserDetail, &EntityUserDetail{4, "address_4"})
 		// Scores
-		all, err = db.Table(tableUserScores).Where("uid", gutil.ListItemValues(users, "User", "Uid")).Order("id asc").All()
+		all, err = db.Table(tableUserScores).Where("uid", gdb.ListItemValues(users, "User", "Uid")).Order("id asc").All()
 		gtest.Assert(err, nil)
 		err = all.ScanList(&users, "UserScores", "User", "uid:Uid")
 		t.Assert(err, nil)
@@ -267,14 +267,14 @@ CREATE TABLE %s (
 		t.Assert(users[0].User, &EntityUser{3, "name_3"})
 		t.Assert(users[1].User, &EntityUser{4, "name_4"})
 		// Detail
-		all, err = db.Table(tableUserDetail).Where("uid", gutil.ListItemValues(users, "User", "Uid")).Order("uid asc").All()
+		all, err = db.Table(tableUserDetail).Where("uid", gdb.ListItemValues(users, "User", "Uid")).Order("uid asc").All()
 		gtest.Assert(err, nil)
 		err = all.ScanList(&users, "UserDetail", "User", "uid:Uid")
 		t.Assert(err, nil)
 		t.Assert(users[0].UserDetail, &EntityUserDetail{3, "address_3"})
 		t.Assert(users[1].UserDetail, &EntityUserDetail{4, "address_4"})
 		// Scores
-		all, err = db.Table(tableUserScores).Where("uid", gutil.ListItemValues(users, "User", "Uid")).Order("id asc").All()
+		all, err = db.Table(tableUserScores).Where("uid", gdb.ListItemValues(users, "User", "Uid")).Order("id asc").All()
 		gtest.Assert(err, nil)
 		err = all.ScanList(&users, "UserScores", "User", "uid:Uid")
 		t.Assert(err, nil)
@@ -287,4 +287,43 @@ CREATE TABLE %s (
 		t.Assert(users[1].UserScores[0].Score, 1)
 		t.Assert(users[1].UserScores[4].Score, 5)
 	})
+
+	// Model ScanList with pointer elements and pointer attributes.
+	gtest.C(t, func(t *gtest.T) {
+		var users []*Entity
+		// User
+		err := db.Table(tableUser).
+			Where("uid", g.Slice{3, 4}).
+			Order("uid asc").
+			ScanList(&users, "User")
+		t.Assert(err, nil)
+		// Detail
+		err = db.Table(tableUserDetail).
+			Where("uid", gdb.ListItemValues(users, "User", "Uid")).
+			Order("uid asc").
+			ScanList(&users, "UserDetail", "User", "uid:Uid")
+		gtest.Assert(err, nil)
+		// Scores
+		err = db.Table(tableUserScores).
+			Where("uid", gdb.ListItemValues(users, "User", "Uid")).
+			Order("id asc").
+			ScanList(&users, "UserScores", "User", "uid:Uid")
+		t.Assert(err, nil)
+
+		t.Assert(len(users), 2)
+		t.Assert(users[0].User, &EntityUser{3, "name_3"})
+		t.Assert(users[1].User, &EntityUser{4, "name_4"})
+
+		t.Assert(users[0].UserDetail, &EntityUserDetail{3, "address_3"})
+		t.Assert(users[1].UserDetail, &EntityUserDetail{4, "address_4"})
+
+		t.Assert(len(users[0].UserScores), 5)
+		t.Assert(len(users[1].UserScores), 5)
+		t.Assert(users[0].UserScores[0].Uid, 3)
+		t.Assert(users[0].UserScores[0].Score, 1)
+		t.Assert(users[0].UserScores[4].Score, 5)
+		t.Assert(users[1].UserScores[0].Uid, 4)
+		t.Assert(users[1].UserScores[0].Score, 1)
+		t.Assert(users[1].UserScores[4].Score, 5)
+	})
 }