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song.go
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song.go
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package content
import (
"fmt"
"log"
"net/http"
"github.com/tomma-a/ponzu/management/editor"
"github.com/tomma-a/ponzu/system/admin/user"
"github.com/tomma-a/ponzu/system/api"
"github.com/tomma-a/ponzu/system/item"
)
type Song struct {
item.Item
Title string `json:"title"`
Artist string `json:"artist"`
Rating int `json:"rating"`
Opinion string `json:"opinion"`
SpotifyURL string `json:"spotify_url"`
}
// MarshalEditor writes a buffer of html to edit a Song within the CMS
// and implements editor.Editable
func (s *Song) MarshalEditor() ([]byte, error) {
view, err := editor.Form(s,
// Take note that the first argument to these Input-like functions
// is the string version of each Song field, and must follow
// this pattern for auto-decoding and auto-encoding reasons:
editor.Field{
View: editor.Input("Title", s, map[string]string{
"label": "Title",
"type": "text",
"placeholder": "Enter the Title here",
}),
},
editor.Field{
View: editor.Input("Artist", s, map[string]string{
"label": "Artist",
"type": "text",
"placeholder": "Enter the Artist here",
}),
},
editor.Field{
View: editor.Input("Rating", s, map[string]string{
"label": "Rating",
"type": "text",
"placeholder": "Enter the Rating here",
}),
},
editor.Field{
View: editor.Richtext("Opinion", s, map[string]string{
"label": "Opinion",
"placeholder": "Enter the Opinion here",
}),
},
editor.Field{
View: editor.Input("SpotifyURL", s, map[string]string{
"label": "SpotifyURL",
"type": "text",
"placeholder": "Enter the SpotifyURL here",
}),
},
)
if err != nil {
return nil, fmt.Errorf("Failed to render Song editor view: %s", err.Error())
}
return view, nil
}
func init() {
item.Types["Song"] = func() interface{} { return new(Song) }
}
// String defines the display name of a Song in the CMS list-view
func (s *Song) String() string { return s.Title }
// BeforeAPIDelete is only called if the Song type implements api.Deleteable
// It is called before Delete, and returning an error will cancel the request
// causing the system to reject the data sent in the POST
func (s *Song) BeforeAPIDelete(res http.ResponseWriter, req *http.Request) error {
// do initial user authentication here on the request, checking for a
// token or cookie, or that certain form fields are set and valid
// for example, this will check if the request was made by a CMS admin user:
if !user.IsValid(req) {
return api.ErrNoAuth
}
// you could then to data validation on the request post form, or do it in
// the Delete method, which is called after BeforeAPIDelete
return nil
}
// Delete is called after BeforeAPIDelete and implements api.Deleteable. All
// other delete-based hooks are only called if this is implemented.
func (s *Song) Delete(res http.ResponseWriter, req *http.Request) error {
// See BeforeAPIDelete above, how we have checked the request for some
// form of auth. This could be done here instead, but if it is done once
// above, it means the request is valid here too.
return nil
}
// AfterAPIDelete is called after Delete, and is useful for logging or triggering
// notifications, etc. after the data is deleted frm the database, etc.
func (s *Song) AfterAPIDelete(res http.ResponseWriter, req *http.Request) error {
addr := req.RemoteAddr
log.Println("Song deleted by:", addr, "id:", req.URL.Query().Get("id"))
return nil
}