gorm

models/Tag.go

@@ -1,197 +1,16 @@
 package models
 
 import (
-	"log"
 	"main/configs"
 )
 
 type Tag struct {
-	ID        int    `json:"id"`
+	ID        int    `json:"id" gorm:"primary_key"`
 	Name      string `json:"name"`
 	CreatedAt string `json:"created_at"`
 	UpdatedAt string `json:"updated_at"`
 }
 
-func (tag *Tag) Create(name string) error {
-	db, err := configs.GetDB()
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	defer db.Close()
-	stmt, err := db.Prepare("INSERT INTO tags(name, created_at, updated_at) values(?, ?, ?)")
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	defer stmt.Close()
-	result, err := stmt.Exec(name, tag.CreatedAt, tag.UpdatedAt)
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	id, err := result.LastInsertId()
-	if err != nil {
-		return err
-	}
-	tag.ID = int(id)
-	return nil
-}
-
-func (tag *Tag) Delete() error {
-	db, err := configs.GetDB()
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	defer db.Close()
-	stmt, err := db.Prepare("DELETE FROM tags WHERE id = ?")
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	defer stmt.Close()
-	_, err = stmt.Exec(tag.ID)
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	return nil
-}
-
-func (tag *Tag) Update(name string) error {
-	db, err := configs.GetDB()
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	defer db.Close()
-	stmt, err := db.Prepare("UPDATE tags SET name = ?, updated_at = ? WHERE id = ?")
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	defer stmt.Close()
-	_, err = stmt.Exec(name, tag.UpdatedAt, tag.ID)
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	return nil
-}
-
-func (tag *Tag) Get() error {
-	db, err := configs.GetDB()
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	defer db.Close()
-	err = db.QueryRow("SELECT * FROM tags WHERE id = ?", tag.ID).Scan(&tag.ID, &tag.Name, &tag.CreatedAt, &tag.UpdatedAt)
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-	return nil
-}
-
-func GetTags() ([]Tag, error) {
-	db, err := configs.GetDB()
-	if err != nil {
-		log.Println(err)
-		return nil, err
-	}
-	defer db.Close()
-	rows, err := db.Query("SELECT * FROM tags")
-	if err != nil {
-		log.Println(err)
-		return nil, err
-	}
-	defer rows.Close()
-	var tags []Tag
-	for rows.Next() {
-		var tag Tag
-		err := rows.Scan(&tag.ID, &tag.Name, &tag.CreatedAt, &tag.UpdatedAt)
-		if err != nil {
-			log.Println(err)
-			return nil, err
-		}
-		tags = append(tags, tag)
-	}
-	return tags, nil
-}
-
-func GetTag(id int) (*Tag, error) {
-	db, err := configs.GetDB()
-	if err != nil {
-		log.Println(err)
-		return nil, err
-	}
-	defer db.Close()
-	row := db.QueryRow("SELECT * FROM tags WHERE id = ?", id)
-	var tag Tag
-	err = row.Scan(&tag.ID, &tag.Name, &tag.CreatedAt, &tag.UpdatedAt)
-	if err != nil {
-		log.Println(err)
-		return nil, err
-	}
-	return &tag, nil
-}
-
-func GetTagByName(name string) (*Tag, error) {
-	db, err := configs.GetDB()
-	if err != nil {
-		log.Println(err)
-		return nil, err
-	}
-	defer db.Close()
-	row := db.QueryRow("SELECT * FROM tags WHERE name = ?", name)
-	var tag Tag
-	err = row.Scan(&tag.ID, &tag.Name, &tag.CreatedAt, &tag.UpdatedAt)
-	if err != nil {
-		log.Println(err)
-		return nil, err
-	}
-	return &tag, nil
-}
-
-func QueryTags(page, pagesize int) (list []interface{}) {
-	db, err := configs.GetDB()
-	if err != nil {
-		log.Println(err)
-		return nil
-	}
-	defer db.Close()
-	rows, err := db.Query("SELECT * FROM tags LIMIT ?, ?", page, pagesize)
-	if err != nil {
-		log.Println(err)
-		return nil
-	}
-	defer rows.Close()
-	for rows.Next() {
-		var tag Tag
-		err := rows.Scan(&tag.ID, &tag.Name, &tag.CreatedAt, &tag.UpdatedAt)
-		if err != nil {
-			log.Println(err)
-			return nil
-		}
-		list = append(list, tag)
-	}
-	return list
-}
-
-func CountTags() (count int) {
-	db, err := configs.GetDB()
-	if err != nil {
-		log.Println(err)
-		return 0
-	}
-	defer db.Close()
-	row := db.QueryRow("SELECT COUNT(*) FROM tags")
-	err = row.Scan(&count)
-	if err != nil {
-		log.Println(err)
-		return 0
-	}
-	return count
+func init() {
+	configs.ORMDB().AutoMigrate(&Tag{})
 }