合併輸出

models/ListView.go

@@ -3,6 +3,7 @@ package models
 import (
 	"encoding/json"
 	"log"
+	"net/http"
 )
 
 type ListView struct {
@@ -13,7 +14,7 @@ type ListView struct {
 	List     []interface{} `json:"list"`
 }
 
-// 輸出JSON給瀏覽器
+// 轉換爲JSON並返回
 func (listview *ListView) ToJSON() []byte {
 
 	// 即使list爲空，也要返回空的JSON數組
@@ -29,3 +30,9 @@ func (listview *ListView) ToJSON() []byte {
 	}
 	return b
 }
+
+// 直接輸出JSON給瀏覽器
+func (listview *ListView) WriteJSON(w http.ResponseWriter) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	w.Write(listview.ToJSON())
+}

models/Tag.go

@@ -12,7 +12,7 @@ type Tag struct {
 	UpdatedAt string `json:"updated_at"`
 }
 
-func (tag *Tag) Create() error {
+func (tag *Tag) Create(name string) error {
 	db, err := configs.GetDB()
 	if err != nil {
 		log.Println(err)
@@ -25,7 +25,7 @@ func (tag *Tag) Create() error {
 		return err
 	}
 	defer stmt.Close()
-	result, err := stmt.Exec(tag.Name, tag.CreatedAt, tag.UpdatedAt)
+	result, err := stmt.Exec(name, tag.CreatedAt, tag.UpdatedAt)
 	if err != nil {
 		log.Println(err)
 		return err
@@ -139,3 +139,44 @@ func GetTagByName(name string) (*Tag, error) {
 	}
 	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
+}