/
fileupdater.go
73 lines (62 loc) · 2.07 KB
/
fileupdater.go
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/*
Nging is a toolbox for webmasters
Copyright (C) 2018-present Wenhui Shen <swh@admpub.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
// Package fileupdater 编辑内容时更新相关引用文件的关联关系
// 用法:fileupdater.New(fileModel.NewEmbedded(ctx)).Set(`表名称`,`字段名称`,主键ID).Add(`/test/image.jpg`,false)
package fileupdater
var Debug = false
func New(reler Reler) *FileUpdater {
return &FileUpdater{
rel: reler,
}
}
type FileUpdater struct {
rel Reler
project string
table string
field string
tableID string
seperator string
}
func (f *FileUpdater) Handle(event string, content *string, embedded bool) error {
switch event {
case `creating`, `created`:
return f.Add(content, embedded)
case `updating`, `updated`:
return f.Edit(content, embedded)
case `deleting`, `deleted`:
return f.Delete()
default:
panic(`Unsupported event: ` + event)
}
}
func (f *FileUpdater) Add(content *string, embedded bool) (err error) {
if len(*content) == 0 {
return
}
err = f.Edit(content, embedded)
return
}
func (f *FileUpdater) Edit(content *string, embedded bool) (err error) {
if embedded {
err = f.rel.RelationEmbeddedFiles(f.project, f.table, f.field, f.tableID, *content)
} else {
err = f.rel.RelationFiles(f.project, f.table, f.field, f.tableID, *content, f.seperator)
}
return err
}
func (f *FileUpdater) Delete() (err error) {
err = f.rel.DeleteByTableID(f.project, f.table, f.tableID)
return
}