[ISSUE] reflect: NumField of non-struct type #18
Comments
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After some investigation I found that when I enabled |
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Hello @vzool. |
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Hi @sas1024, // BaseModel model
type BaseModel struct {
ID hide.ID `gorm:"primary_key" json:"id,omitempty"`
}
// TrackingModel model
type TrackingModel struct {
CreatedAt *time.Time `json:"created_at,omitempty" gorm:"NOT NULL"`
UpdatedAt *time.Time `json:"updated_at,omitempty" gorm:"DEFAULT NULL"`
DeletedAt *time.Time `sql:"index" json:"deleted_at,omitempty" gorm:"DEFAULT NULL"`
CreatedBy hide.ID `json:"created_by,omitempty" gorm:"NOT NULL"`
UpdatedBy hide.ID `json:"updated_by,omitempty" gorm:"DEFAULT NULL"`
DeletedBy hide.ID `json:"deleted_by,omitempty" gorm:"DEFAULT NULL"`
loggable.LoggableModel
}
// Country model
type Country struct {
BaseModel
Name string `json:"name,omitempty" form:"name" valid:"required" gorm:"unique_index;NOT NULL" gorm-loggable:"true"`
Code int `json:"code,omitempty" form:"code" gorm:"unique_index;NOT NULL" gorm-loggable:"true"`
TrackingModel
} |
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After extra investigation I think that this line below inside old := im.get(scope.Value, scope.PrimaryKeyValue())Does not return the old record to make Diff operation with new one. |
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I think you need to move |
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This let me pass the error and fall into a new one: reflect: call of reflect.Value.Field on ptr ValueAnd I can't share the complete logs because I changed a lot of things which become messy. In fact, I did managed to pass first error with the following update: func getLoggableFieldNames(value interface{}) []string {
var names []string
t := pointerType(reflect.TypeOf(value))
for i := 0; i < t.NumField(); i++ {
field := t.Field(i)
value, ok := field.Tag.Lookup(loggableTag)
if !ok || value != "true" {
continue
}
names = append(names, field.Name)
}
fmt.Println("(Names): ", names)
return names
}
// pointerType is made to chase for value through all the way following,
// leading pointers until reach the deep final value which is not a pointer
func pointerType(t reflect.Type) reflect.Type {
for {
if t.Kind() != reflect.Ptr {
return t
}
t = t.Elem()
}
}So, I think it doesn't matter any more if I shift |
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Okey I did reset the code and just add 2019/09/25 17:01:39 [Recovery] 2019/09/25 - 17:01:39 panic recovered:
PUT /api/v1/country/e0YPEGdBM HTTP/1.1
Host: localhost:8080
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9,ar;q=0.8
Authorization: *
Cache-Control: no-cache
Connection: keep-alive
Content-Length: 45
Content-Type: text/plain;charset=UTF-8
Origin: chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop
Postman-Token: 8a460257-d870-b7f8-5ac6-ae1159a0c9ff
Sec-Fetch-Mode: cors
Sec-Fetch-Site: cross-site
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36
reflect: call of reflect.Value.FieldByName on ptr Value
/usr/lib64/go/1.11/src/runtime/panic.go:513 (0x433358)
gopanic: reflectcall(nil, unsafe.Pointer(d.fn), deferArgs(d), uint32(d.siz), uint32(d.siz))
/home/vzool/go/pkg/mod/github.com/jinzhu/gorm@v1.9.10/scope.go:884 (0x985422)
(*Scope).callCallbacks.func1: panic(err)
/usr/lib64/go/1.11/src/runtime/asm_amd64.s:522 (0x45eb0a)
call32: CALLFN(·call32, 32)
/usr/lib64/go/1.11/src/runtime/panic.go:513 (0x433358)
gopanic: reflectcall(nil, unsafe.Pointer(d.fn), deferArgs(d), uint32(d.siz), uint32(d.siz))
/usr/lib64/go/1.11/src/reflect/value.go:207 (0x4bd2a3)
flag.mustBe: panic(&ValueError{methodName(), f.kind()})
/usr/lib64/go/1.11/src/reflect/value.go:865 (0x4c017b)
Value.FieldByName: v.mustBe(Struct)
/home/vzool/go/pkg/mod/github.com/sas1024/gorm-loggable@v0.0.0-20190307192712-3ae87a295625/callbacks.go:146 (0x99144f)
computeUpdateDiff: ofv := ov.FieldByName(name).Interface()
/home/vzool/go/pkg/mod/github.com/sas1024/gorm-loggable@v0.0.0-20190307192712-3ae87a295625/callbacks.go:88 (0x990c61)
addUpdateRecord: diff := computeUpdateDiff(scope)
/home/vzool/go/pkg/mod/github.com/sas1024/gorm-loggable@v0.0.0-20190307192712-3ae87a295625/callbacks.go:70 (0x990907)
(*Plugin).addUpdated: addUpdateRecord(scope, p.opts)
/home/vzool/go/pkg/mod/github.com/sas1024/gorm-loggable@v0.0.0-20190307192712-3ae87a295625/plugin.go:25 (0x9944c3)
(*Plugin).addUpdated-fm: callback.Update().After("gorm:after_update").Register("loggable:update", p.addUpdated)
/home/vzool/go/pkg/mod/github.com/jinzhu/gorm@v1.9.10/scope.go:888 (0x970a27)
(*Scope).callCallbacks: (*f)(scope)
/home/vzool/go/pkg/mod/github.com/jinzhu/gorm@v1.9.10/main.go:467 (0x96079f)
(*DB).Save: newDB := scope.callCallbacks(s.parent.callbacks.updates).db
/home/vzool/Workspace/seren/webapp/app/http/controllers/country.go:210 (0xb31f01)
CountryUpdate: if err := db.Save(&data).Error; err != nil {
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/context.go:124 (0x8d08e9)
(*Context).Next: c.handlers[c.index](c)
/home/vzool/Workspace/seren/webapp/app/http/middleware/auth.go:55 (0xb562d2)
Auth.func1: ctx.Next()
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/context.go:124 (0x8d08e9)
(*Context).Next: c.handlers[c.index](c)
/home/vzool/Workspace/seren/webapp/app/http/middleware/hideID.go:32 (0xb56d31)
HideID.func1: ctx.Next()
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/context.go:124 (0x8d08e9)
(*Context).Next: c.handlers[c.index](c)
/home/vzool/Workspace/seren/webapp/app/http/middleware/cors.go:26 (0xb569b2)
CORS.func1: c.Next()
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/context.go:124 (0x8d08e9)
(*Context).Next: c.handlers[c.index](c)
/home/vzool/go/pkg/mod/github.com/gin-contrib/gzip@v0.0.1/gzip.go:47 (0xb5239e)
Gzip.func2: c.Next()
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/context.go:124 (0x8d08e9)
(*Context).Next: c.handlers[c.index](c)
/home/vzool/Workspace/seren/webapp/app/http/middleware/secure.go:42 (0xb56fff)
Secure.func1: ctx.Next()
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/context.go:124 (0x8d08e9)
(*Context).Next: c.handlers[c.index](c)
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/recovery.go:83 (0x8e3af9)
RecoveryWithWriter.func1: c.Next()
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/context.go:124 (0x8d08e9)
(*Context).Next: c.handlers[c.index](c)
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/logger.go:240 (0x8e2c60)
LoggerWithConfig.func1: c.Next()
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/context.go:124 (0x8d08e9)
(*Context).Next: c.handlers[c.index](c)
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/gin.go:389 (0x8d9fa4)
(*Engine).handleHTTPRequest: c.Next()
/home/vzool/go/pkg/mod/github.com/gin-gonic/gin@v1.4.0/gin.go:351 (0x8d97d1)
(*Engine).ServeHTTP: engine.handleHTTPRequest(c)
/usr/lib64/go/1.11/src/net/http/server.go:2741 (0x7034ea)
serverHandler.ServeHTTP: handler.ServeHTTP(rw, req)
/usr/lib64/go/1.11/src/net/http/server.go:1847 (0x6ff735)
(*conn).serve: serverHandler{c.server}.ServeHTTP(w, w.req)
/usr/lib64/go/1.11/src/runtime/asm_amd64.s:1333 (0x460820)
goexit: BYTE $0x90 // NOP |
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For now i'm not able to resolve this issue, because i'm not using this addon anymore. @vcraescu can you help with this issue? |
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@vzool Hi. I think, the main reason, why it panics, because you use pointers in Update method. Could you post minimal example, that panics on https://play.golang.org ? Also, as quick fix, I think, you may change code of identity_manager.go: func (im *identityManager) save(value, pk interface{}) {
t := reflect.TypeOf(value)
newValue := reflect.New(t).Interface()
err := copier.Copy(&newValue, value)
if err != nil {
panic(err)
}
im.m[genIdentityKey(t, pk)] = newValue
}After: func (im *identityManager) save(value, pk interface{}) {
t := reflect.Indirect(reflect.ValueOf(value)).Type()
newValue := reflect.New(t).Interface()
err := copier.Copy(&newValue, value)
if err != nil {
panic(err)
}
im.m[genIdentityKey(t, pk)] = newValue
} |
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@vetcher I'm not sure now, because I forked it locally and I did changed a lot of things for a degree that I can get rid of |
Hi,
I have to use your package with the package hide.ID and I have an error with
UpdateandDelete. Here is the full error report:I use SQLite driver
Any advice could help me out? Thanks
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