Comments (8)
hsluoyz
commented on May 18, 2024
@llh4github please use English.
from gorm-adapter.
llh4github
commented on May 18, 2024
@hsluoyz Sorry,I describe the problem again in English.
When running the following code, I found a null pointer error. The error occurred in this line, e, err := casbin.NewEnforcer("./rbac_model.toml", a).
import (
"log"
"os"
"testing"
"time"
"github.com/casbin/casbin/v2"
gormadapter "github.com/casbin/gorm-adapter/v3"
"gorm.io/driver/mysql"
"gorm.io/gorm"
"gorm.io/gorm/logger"
"gorm.io/gorm/schema"
)
func TestC() {
newLogger := logger.New(
log.New(os.Stdout, "\r\n", log.LstdFlags), // io writer
logger.Config{
SlowThreshold: time.Second, // 慢 SQL 阈值
LogLevel: logger.Info, // Log level
Colorful: false, // 禁用彩色打印
},
)
db, err := gorm.Open(mysql.Open("root:root@tcp(127.0.0.1:3306)/test?charset=utf8&parseTime=True&loc=Local"),
&gorm.Config{
Logger: newLogger,
NamingStrategy: schema.NamingStrategy{
SingularTable: true, // 表名单数
TablePrefix: "", // 表前缀
},
})
if err != nil {
println("数据库连接失败！")
}
// con1()
con2(db)
db.Debug()
println("hello")
}
// 使用已有DB连接
func con2(db *gorm.DB) {
a, err := gormadapter.NewAdapterByDB(db)
if err != nil {
println(err)
}
e, err := casbin.NewEnforcer("./rbac_model.toml", a)
if err != nil {
println(err)
}
e.LoadPolicy()
// e.AddRoleForUser("tom", "admin")
println(e.GetAdapter())
}I found that the problem is a type conversion error in the source code of gorm-adapter.
Line 85 of the ennforcer.go file: err := e.InitWithAdapter(p0, p1.(persist.Adapter)).
The prompt information of the Line 85 is interface conversion: interface {} is *github.com/casbin/gorm-adapter/v3.Adapter, not github.com/casbin/casbin/v2/persist.Adapter
from gorm-adapter.
hsluoyz
commented on May 18, 2024
@llh4github please modify all your existing code, text and comment into English.
from gorm-adapter.
llh4github
commented on May 18, 2024
import (
"log"
"os"
"testing"
"time"
"github.com/casbin/casbin/v2"
gormadapter "github.com/casbin/gorm-adapter/v3"
"gorm.io/driver/mysql"
"gorm.io/gorm"
"gorm.io/gorm/logger"
"gorm.io/gorm/schema"
)
func TestC() {
newLogger := logger.New(
log.New(os.Stdout, "\r\n", log.LstdFlags), // io writer
logger.Config{
SlowThreshold: time.Second,
LogLevel: logger.Info, // Log level
Colorful: false,
},
)
db, err := gorm.Open(mysql.Open("root:root@tcp(127.0.0.1:3306)/test?charset=utf8&parseTime=True&loc=Local"),
&gorm.Config{
Logger: newLogger,
NamingStrategy: schema.NamingStrategy{
SingularTable: true,
TablePrefix: "",
},
})
if err != nil {
println("Database connection failed!")
}
con2(db)
db.Debug()
println("hello")
}
// Use gorm to connect to the database
func con2(db *gorm.DB) {
a, err := gormadapter.NewAdapterByDB(db)
if err != nil {
println(err)
}
e, err := casbin.NewEnforcer("./rbac_model.toml", a)
if err != nil {
println(err)
}
e.LoadPolicy()
// e.AddRoleForUser("tom", "admin")
println(e.GetAdapter())
}@hsluoyz Now, No Chinese characters.
from gorm-adapter.
llh4github
commented on May 18, 2024
When running the following code, I found a null pointer error. The error occurred in this line, e, err := casbin.NewEnforcer("./rbac_model.toml", a).
import (
"log"
"os"
"testing"
"time"
"github.com/casbin/casbin/v2"
gormadapter "github.com/casbin/gorm-adapter/v3"
"gorm.io/driver/mysql"
"gorm.io/gorm"
"gorm.io/gorm/logger"
"gorm.io/gorm/schema"
)
func TestC(t *testing.T) {
newLogger := logger.New(
log.New(os.Stdout, "\r\n", log.LstdFlags), // io writer
logger.Config{
SlowThreshold: time.Second,
LogLevel: logger.Info, // Log level
Colorful: false,
},
)
db, err := gorm.Open(mysql.Open("root:root@tcp(127.0.0.1:3306)/test?charset=utf8&parseTime=True&loc=Local"),
&gorm.Config{
Logger: newLogger,
NamingStrategy: schema.NamingStrategy{
SingularTable: true,
TablePrefix: "",
},
})
if err != nil {
println("Database connection failed!")
}
con2(db)
db.Debug()
println("hello")
}
// Use gorm to connect to the database
func con2(db *gorm.DB) {
a, err := gormadapter.NewAdapterByDB(db)
if err != nil {
println(err)
}
e, err := casbin.NewEnforcer("./rbac_model.toml", a)
if err != nil {
println(err)
}
e.LoadPolicy()
// e.AddRoleForUser("tom", "admin")
println(e.GetAdapter())
}I found that the problem is a type conversion error in the source code of gorm-adapter.
Line 85 of the ennforcer.go file: err := e.InitWithAdapter(p0, p1.(persist.Adapter)).
The prompt information of the Line 85 is interface conversion: interface {} is *github.com/casbin/gorm-adapter/v3.Adapter, not github.com/casbin/casbin/v2/persist.Adapter.
from gorm-adapter.
hsluoyz
commented on May 18, 2024
from gorm-adapter.
00LT00
commented on May 18, 2024
what's this e, err := casbin.NewEnforcer("./rbac_model.toml", a) ?
casbin's model file is "xxx.conf".
@llh4github
from gorm-adapter.
nodece
commented on May 18, 2024
@llh4github I tested your code, it works fine.
one thing to note is here.
e, err := casbin.NewEnforcer("./rbac_model.toml", a) // the rbac_model.toml must exist.
if err != nil {
println(err) // miss return.
}
e.LoadPolicy() // when NewEnforcer returns `err != nil`, e is `nil`.
from gorm-adapter.
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