fix(tag): tag的启用状态为未启用，也就是0时，无法更新成功

Fix #2

Author: minibear2333

docs/docs.go

@@ -1,6 +1,6 @@
 // GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 // This file was generated by swaggo/swag at
-// 2021-06-20 16:53:32.405848 +0800 CST m=+0.051690642
+// 2021-06-20 17:26:29.286161 +0800 CST m=+0.049265085
 
 package docs
 
@@ -130,6 +130,9 @@ var doc = `{
         },
         "/api/v1/tags/{id}": {
             "put": {
+                "consumes": [
+                    "application/json"
+                ],
                 "produces": [
                     "application/json"
                 ],

docs/swagger.json

@@ -112,6 +112,9 @@
         },
         "/api/v1/tags/{id}": {
             "put": {
+                "consumes": [
+                    "application/json"
+                ],
                 "produces": [
                     "application/json"
                 ],

docs/swagger.yaml

@@ -186,6 +186,8 @@ paths:
             $ref: '#/definitions/errcode.Error'
       summary: 删除标签
     put:
+      consumes:
+      - application/json
       parameters:
       - description: 标签 ID
         in: path

internal/dao/tag.go

@@ -27,14 +27,22 @@ func (d *Dao) CreateTag(name string, state uint8, createdBy string) error {
 	return tag.Create(d.engine)
 }
 
-func (d *Dao) UpdateTag(id uint32, name string, state uint8, modifiedBy string) error {
+func (d *Dao) UpdateTag(id uint32, name string, state *uint8, modifiedBy string) error {
 	tag := model.Tag{
-		Name:  name,
-		State: state,
-		Model: &model.Model{ID: id, ModifiedBy: modifiedBy},
+		Model: &model.Model{ID: id},
+	}
+
+	values := map[string]interface{}{
+		"modified_by": modifiedBy,
+	}
+	if name != "" {
+		values["name"] = name
+	}
+	if state != nil {
+		values["state"] = state
 	}
 
-	return tag.Update(d.engine)
+	return tag.Update(d.engine, values)
 }
 
 func (d *Dao) DeleteTag(id uint32) error {

internal/model/tag.go

@@ -59,9 +59,14 @@ func (t Tag) Create(db *gorm.DB) error {
 	return db.Create(&t).Error
 }
 
-func (t Tag) Update(db *gorm.DB) error {
+func (t Tag) Update(db *gorm.DB, values interface{}) error {
 	// Updates 更新所选字段
-	return db.Model(&Tag{}).Where("id = ? AND is_del = ?", t.ID, 0).Update(t).Error
+	// 不能这样写 db.Model(&Tag{}).Where("id = ? AND is_del = ?", t.ID, 0).Update(t).Error
+	// https://github.com/golang-minibear2333/gin-blog/issues/2
+	if err := db.Model(t).Where("id = ? AND is_del = ?", t.ID, 0).Updates(values).Error; err != nil {
+		return err
+	}
+	return nil
 }
 
 func (t Tag) Delete(db *gorm.DB) error {

internal/service/tag.go

@@ -26,7 +26,7 @@ type CreateTagRequest struct {
 type UpdateTagRequest struct {
 	ID         uint32 `form:"id" binding:"required,gte=1"`                  // 标签id
 	Name       string `form:"name" binding:"max=100"`                       // 标签名称
-	State      uint8  `form:"state" binding:"oneof=0 1"`                    //状态，是否启用(0 为禁用、1 为启用)
+	State      *uint8  `form:"state" binding:"omitempty,oneof=0 1"`                    //状态，是否启用(0 为禁用、1 为启用)
 	ModifiedBy string `form:"modified_by" binding:"required,min=2,max=100"` // 修改者
 }