vikunja-api/pkg/migration/20200516123847.go

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// Vikunja is a to-do list application to facilitate your life.
// Copyright 2018-2020 Vikunja and contributors. All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package migration
import (
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"strings"
"src.techknowlogick.com/xormigrate"
"xorm.io/xorm"
)
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type list20200516123847 struct {
ID int64 `xorm:"int(11) autoincr not null unique pk" json:"id" param:"list"`
Title string `xorm:"varchar(250) not null" json:"title" valid:"required,runelength(3|250)" minLength:"3" maxLength:"250"`
Description string `xorm:"longtext null" json:"description"`
Identifier string `xorm:"varchar(10) null" json:"identifier" valid:"runelength(0|10)" minLength:"0" maxLength:"10"`
HexColor string `xorm:"varchar(6) null" json:"hex_color" valid:"runelength(0|6)" maxLength:"6"`
OwnerID int64 `xorm:"int(11) INDEX not null" json:"-"`
NamespaceID int64 `xorm:"int(11) INDEX not null" json:"-" param:"namespace"`
IsArchived bool `xorm:"not null default false" json:"is_archived" query:"is_archived"`
Created int64 `xorm:"created not null" json:"created"`
Updated int64 `xorm:"updated not null" json:"updated"`
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}
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func (l *list20200516123847) TableName() string {
return "list"
}
func init() {
migrations = append(migrations, &xormigrate.Migration{
ID: "20200516123847",
Description: "Generate a list identifier for each list",
Migrate: func(tx *xorm.Engine) error {
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lists := []*list20200516123847{}
err := tx.Find(&lists)
if err != nil {
return err
}
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// Copied and adopted from pkg/models/list.go:374
generateListIdentifier := func(l *list20200516123847, sess *xorm.Engine) (err error) {
// The general idea here is to take the title and slice it into pieces, until we found a unique piece.
var exists = true
titleSlug := []rune(strings.ReplaceAll(strings.ToUpper(l.Title), " ", ""))
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// We can save at most 10 characters in the db, so we need to ensure it has at most 10 characters
if len(titleSlug) > 10 {
titleSlug = titleSlug[0:9]
}
var i = 0
for exists {
// Prevent endless looping
if i == len(titleSlug) {
break
}
// Take a random part of the title slug, starting at the beginning
l.Identifier = string(titleSlug[i:])
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exists, err = sess.
Where("identifier = ?", l.Identifier).
And("id != ?", l.ID).
Exist(&list20200516123847{})
if err != nil {
return
}
i++
}
return nil
}
for _, l := range lists {
if l.Identifier != "" {
continue
}
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err := generateListIdentifier(l, tx)
if err != nil {
return err
}
_, err = tx.Where("id = ?", l.ID).Update(l)
if err != nil {
return err
}
}
return nil
},
Rollback: func(tx *xorm.Engine) error {
return nil
},
})
}