shorgru/pkg/handler/rate/rate.go

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package rate
import (
"strconv"
"github.com/labstack/echo-contrib/session"
"github.com/labstack/echo/v4"
"sh.org.ru/pkg/model"
"sh.org.ru/pkg/tpl"
)
func (h *Handler) Rate(c echo.Context) error {
voted, err := session.Get("votes", c)
if err != nil {
return err
}
sid := c.Param("id")
id, err := strconv.Atoi(sid)
if err != nil {
return err
}
f := new(rateForm)
if err := c.Bind(f); err != nil {
return err
}
quote := new(model.Quote)
if _, ok := voted.Values[id]; !ok {
voted.Values[id] = true
if err := voted.Save(c.Request(), c.Response()); err != nil {
return err
}
set := ""
switch f.Vote {
case "up":
set = "rating = rating + 1"
case "down":
set = "rating = rating - 1"
}
_, err = h.db.NewUpdate().
Model(quote).
Where("id = ?", id).
Set(set).
Returning("*").
Exec(c.Request().Context(), quote)
} else {
err = h.db.NewSelect().
Model(quote).
Where("id = ?", id).
Scan(c.Request().Context(), quote)
}
if err != nil {
return err
}
return tpl.Rate(quote, 0).Render(c.Request().Context(), c.Response())
}
type rateForm struct {
Vote string `form:"vote"`
}
type voteType string
const (
voteUp voteType = "up"
voteDown voteType = "down"
)