feat: support NullType

Author: qqxhb

config.go

@@ -115,6 +115,29 @@ func (cfg *Config) WithImportPkgPath(paths ...string) {
 	cfg.importPkgPaths = append(cfg.importPkgPaths, paths...)
 }
 
+// WithDataTypesNullType configures the types of fields to use their datatypes nullable counterparts.
+/**
+ *
+ * @param {boolean} all - If true, all basic types of fields will be replaced with their `datatypes.Null[T]` types.
+ *                        If false, only fields that are allowed to be null will be replaced with `datatypes.Null[T]` types.
+ *
+ * Examples:
+ *
+ * When `all` is true:
+ * - `int64` will be replaced with `datatypes.NullInt64`
+ * - `string` will be replaced with `datatypes.NullString`
+ *
+ * When `all` is false:
+ * - Only fields that can be null (e.g., `*string` or `*int`) will be replaced with `datatypes.Null[T]` types.
+ *
+ * Note:
+ * Ensure that proper error handling is implemented when converting
+ * fields to their `datatypes.Null[T]` types to avoid runtime issues.
+ */
+func (cfg *Config) WithDataTypesNullType(all bool) {
+	cfg.WithOpts(WithDataTypesNullType(all))
+}
+
 // Revise format path and db
 func (cfg *Config) Revise() (err error) {
 	if strings.TrimSpace(cfg.ModelPkgPath) == "" {

field_options.go

@@ -1,6 +1,7 @@
 package gen
 
 import (
+	"fmt"
 	"reflect"
 	"regexp"
 	"strings"
@@ -26,6 +27,50 @@ var (
 		}
 	}
 
+	// WithDataTypesNullType configures the types of fields to use their datatypes nullable counterparts.
+	/**
+	 *
+	 * @param {boolean} all - If true, all basic types of fields will be replaced with their `datatypes.Null[T]` types.
+	 *                        If false, only fields that are allowed to be null will be replaced with `datatypes.Null[T]` types.
+	 *
+	 * Examples:
+	 *
+	 * When `all` is true:
+	 * - `int64` will be replaced with `datatypes.NullInt64`
+	 * - `string` will be replaced with `datatypes.NullString`
+	 *
+	 * When `all` is false:
+	 * - Only fields that can be null (e.g., `*string` or `*int`) will be replaced with `datatypes.Null[T]` types.
+	 *
+	 * Note:
+	 * Ensure that proper error handling is implemented when converting
+	 * fields to their `datatypes.Null[T]` types to avoid runtime issues.
+	 */
+	WithDataTypesNullType = func(all bool) model.ModifyFieldOpt {
+		return func(f *model.Field) *model.Field {
+			ft := f.Type
+			nullable := false
+			if strings.HasPrefix(ft, "*") {
+				nullable = true
+				ft = strings.TrimLeft(ft, "*")
+			}
+			if !all && !nullable {
+				return f
+			}
+			switch ft {
+			case "time.Time", "string", "int", "int8", "int16",
+				"int32", "int64", "uint", "uint8", "uint16", "uint32",
+				"uint64", "float64", "float32", "byte", "bool":
+				ft = fmt.Sprintf("datatypes.Null[%s]", ft)
+			default:
+				return f
+			}
+			f.CustomGenType = f.GenType()
+			f.Type = ft
+			return f
+		}
+	}
+
 	// FieldNew add new field (any type your want)
 	FieldNew = func(fieldName, fieldType string, fieldTag field.Tag) model.CreateFieldOpt {
 		return func(*model.Field) *model.Field {

go.mod

@@ -4,17 +4,19 @@ go 1.18
 
 require (
 	golang.org/x/tools v0.17.0
-	gorm.io/datatypes v1.1.1-0.20230130040222-c43177d3cf8c
-	gorm.io/gorm v1.25.9
+	gorm.io/datatypes v1.2.4
+	gorm.io/gorm v1.25.11
 	gorm.io/hints v1.1.0
 	gorm.io/plugin/dbresolver v1.5.0
 )
 
 require (
-	github.com/go-sql-driver/mysql v1.7.0 // indirect
+	filippo.io/edwards25519 v1.1.0 // indirect
+	github.com/go-sql-driver/mysql v1.8.1 // indirect
+	github.com/google/uuid v1.3.0 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
-	golang.org/x/crypto v0.14.0 // indirect
 	golang.org/x/mod v0.14.0 // indirect
-	gorm.io/driver/mysql v1.4.4 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	gorm.io/driver/mysql v1.5.6 // indirect
 )

go.sum

@@ -1,18 +1,19 @@
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
+filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
-github.com/go-sql-driver/mysql v1.7.0 h1:ueSltNNllEqE3qcWBTD0iQd3IpL/6U+mJxLkazJ7YPc=
 github.com/go-sql-driver/mysql v1.7.0/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
+github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
+github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=
 github.com/golang-sql/civil v0.0.0-20220223132316-b832511892a9 h1:au07oEsX2xN0ktxqI+Sida1w446QrXBRJ0nee3SNZlA=
 github.com/golang-sql/sqlexp v0.1.0 h1:ZCD6MBpcuOVfGVqsEmY5/4FtYiKz6tSyUv9LPEDei6A=
-github.com/jackc/chunkreader/v2 v2.0.1 h1:i+RDz65UE+mmpjTfyz0MoVTnzeYxroil2G82ki7MGG8=
-github.com/jackc/pgconn v1.13.0 h1:3L1XMNV2Zvca/8BYhzcRFS70Lr0WlDg16Di6SFGAbys=
-github.com/jackc/pgio v1.0.0 h1:g12B9UwVnzGhueNavwioyEEpAmqMe1E/BN9ES+8ovkE=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
-github.com/jackc/pgproto3/v2 v2.3.1 h1:nwj7qwf0S+Q7ISFfBndqeLwSwxs+4DPsbRFjECT1Y4Y=
-github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b h1:C8S2+VttkHFdOOCXJe+YGfa4vHYwlt4Zx+IVXQ97jYg=
-github.com/jackc/pgtype v1.12.0 h1:Dlq8Qvcch7kiehm8wPGIW0W3KsCCHJnRacKW0UM8n5w=
-github.com/jackc/pgx/v4 v4.17.2 h1:0Ut0rpeKwvIVbMQ1KbMBU4h6wxehBI535LK6Flheh8E=
+github.com/jackc/pgservicefile v0.0.0-20231201235250-de7065d80cb9 h1:L0QtFUgDarD7Fpv9jeVMgy/+Ec0mtnmYuImjTz6dtDA=
+github.com/jackc/pgx/v5 v5.5.5 h1:amBjrZVmksIdNjxGW/IiIMzxMKZFelXbUoPNb+8sjQw=
+github.com/jackc/puddle/v2 v2.2.1 h1:RhxXJtFG022u4ibrCSMSiu5aOq1i77R3OHKNJj77OAk=
 github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
 github.com/jinzhu/now v1.1.2/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
@@ -25,31 +26,32 @@ github.com/microsoft/go-mssqldb v0.17.0 h1:Fto83dMZPnYv1Zwx5vHHxpNraeEaUlQ/hhHLg
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-golang.org/x/crypto v0.14.0 h1:wBqGXzWJW6m1XrIKlAH0Hs1JJ7+9KBwnIO8v66Q9cHc=
-golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
+golang.org/x/crypto v0.22.0 h1:g1v0xeRhjcugydODzvb3mEM9SQ0HGp9s/nh3COQ/C30=
 golang.org/x/mod v0.14.0 h1:dGoOF9QVLYng8IHTm7BAyWqCqSheQ5pYWGhzW00YJr0=
 golang.org/x/mod v0.14.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
-golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/tools v0.17.0 h1:FvmRgNOcs3kOa+T20R1uhfP9F6HgG2mfxDv1vrx1Htc=
 golang.org/x/tools v0.17.0/go.mod h1:xsh6VxdV005rRVaS6SSAf9oiAqljS7UZUacMZ8Bnsps=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gorm.io/datatypes v1.1.1-0.20230130040222-c43177d3cf8c h1:jWdr7cHgl8c/ua5vYbR2WhSp+NQmzhsj0xoY3foTzW8=
-gorm.io/datatypes v1.1.1-0.20230130040222-c43177d3cf8c/go.mod h1:SH2K9R+2RMjuX1CkCONrPwoe9JzVv2hkQvEu4bXGojE=
+gorm.io/datatypes v1.2.4 h1:uZmGAcK/QZ0uyfCuVg0VQY1ZmV9h1fuG0tMwKByO1z4=
+gorm.io/datatypes v1.2.4/go.mod h1:f4BsLcFAX67szSv8svwLRjklArSHAvHLeE3pXAS5DZI=
 gorm.io/driver/mysql v1.4.3/go.mod h1:sSIebwZAVPiT+27jK9HIwvsqOGKx3YMPmrA3mBJR10c=
-gorm.io/driver/mysql v1.4.4 h1:MX0K9Qvy0Na4o7qSC/YI7XxqUw5KDw01umqgID+svdQ=
-gorm.io/driver/mysql v1.4.4/go.mod h1:BCg8cKI+R0j/rZRQxeKis/forqRwRSYOR8OM3Wo6hOM=
-gorm.io/driver/postgres v1.4.5 h1:mTeXTTtHAgnS9PgmhN2YeUbazYpLhUI1doLnw42XUZc=
+gorm.io/driver/mysql v1.5.6 h1:Ld4mkIickM+EliaQZQx3uOJDJHtrd70MxAUqWqlx3Y8=
+gorm.io/driver/mysql v1.5.6/go.mod h1:sEtPWMiqiN1N1cMXoXmBbd8C6/l+TESwriotuRRpkDM=
+gorm.io/driver/postgres v1.5.0 h1:u2FXTy14l45qc3UeCJ7QaAXZmZfDDv0YrthvmRq1l0U=
 gorm.io/driver/sqlite v1.1.6/go.mod h1:W8LmC/6UvVbHKah0+QOC7Ja66EaZXHwUTjgXY8YNWX8=
 gorm.io/driver/sqlite v1.4.3 h1:HBBcZSDnWi5BW3B3rwvVTc510KGkBkexlOg0QrmLUuU=
 gorm.io/driver/sqlserver v1.4.1 h1:t4r4r6Jam5E6ejqP7N82qAJIJAht27EGT41HyPfXRw0=
 gorm.io/gorm v1.21.15/go.mod h1:F+OptMscr0P2F2qU97WT1WimdH9GaQPoDW7AYd5i2Y0=
 gorm.io/gorm v1.22.2/go.mod h1:F+OptMscr0P2F2qU97WT1WimdH9GaQPoDW7AYd5i2Y0=
 gorm.io/gorm v1.23.8/go.mod h1:l2lP/RyAtc1ynaTjFksBde/O8v9oOGIApu2/xRitmZk=
 gorm.io/gorm v1.25.2/go.mod h1:L4uxeKpfBml98NYqVqwAdmV1a2nBtAec/cf3fpucW/k=
-gorm.io/gorm v1.25.9 h1:wct0gxZIELDk8+ZqF/MVnHLkA1rvYlBWUMv2EdsK1g8=
-gorm.io/gorm v1.25.9/go.mod h1:hbnx/Oo0ChWMn1BIhpy1oYozzpM15i4YPuHDmfYtwg8=
+gorm.io/gorm v1.25.7/go.mod h1:hbnx/Oo0ChWMn1BIhpy1oYozzpM15i4YPuHDmfYtwg8=
+gorm.io/gorm v1.25.11 h1:/Wfyg1B/je1hnDx3sMkX+gAlxrlZpn6X0BXRlwXlvHg=
+gorm.io/gorm v1.25.11/go.mod h1:xh7N7RHfYlNc5EmcI/El95gXusucDrQnHXe0+CgWcLQ=
 gorm.io/hints v1.1.0 h1:Lp4z3rxREufSdxn4qmkK3TLDltrM10FLTHiuqwDPvXw=
 gorm.io/hints v1.1.0/go.mod h1:lKQ0JjySsPBj3uslFzY3JhYDtqEwzm+G1hv8rWujB6Y=
 gorm.io/plugin/dbresolver v1.5.0 h1:XVHLxh775eP0CqVh3vcfJtYqja3uFl5Wr3cKlY8jgDY=

internal/model/tbl_column.go

@@ -136,7 +136,7 @@ func (c *Column) needDefaultTag(defaultTagValue string) bool {
 	case reflect.String:
 		return defaultTagValue != ""
 	case reflect.Struct:
-		return strings.Trim(defaultTagValue, "'0:- ") != ""
+		return strings.Trim(defaultTagValue, "'0:-") != ""
 	}
 	return c.Name() != "created_at" && c.Name() != "updated_at"
 }