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tag.go
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tag.go
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package main
import (
"net/http"
"github.com/labstack/echo"
)
// Tag for keeping lessons
type Tag struct {
ID int `json:"id,omitempty"`
Title string `json:"title,omitempty"`
}
func createTag(c echo.Context) error {
t := &Tag{}
if err := c.Bind(t); err != nil {
return err
}
insertTagSQL := "INSERT INTO tags(title) VALUES(?)"
stmt, err := db.Prepare(insertTagSQL)
if err != nil {
return err
}
defer stmt.Close()
_, err = stmt.Exec(t.Title)
if err != nil {
return err
}
return c.JSON(http.StatusCreated, t)
}
func getTags(c echo.Context) error {
var ts []Tag = make([]Tag, 0)
rows, err := db.Query("SELECT * FROM tags")
if err != nil {
return err
}
defer rows.Close()
for rows.Next() {
t := Tag{}
rows.Scan(&t.ID, &t.Title)
ts = append(ts, t)
}
return c.JSON(http.StatusOK, ts)
}
func updateTag(c echo.Context) error {
id := c.Param("id")
t := &Tag{}
if err := c.Bind(t); err != nil {
return err
}
stmt, err := db.Prepare("UPDATE tags SET title=? WHERE id=?")
if err != nil {
return err
}
defer stmt.Close()
_, err = stmt.Exec(t.Title, id)
if err != nil {
return err
}
return c.NoContent(http.StatusAccepted)
}
func deleteTag(c echo.Context) error {
id := c.Param("id")
_, err := db.Exec("DELETE FROM tags WHERE id = ?", id)
if err != nil {
return err
}
return c.NoContent(http.StatusOK)
}