本文整理汇总了Golang中github.com/jinzhu/gorm.Scope.HasColumn方法的典型用法代码示例。如果您正苦于以下问题：Golang Scope.HasColumn方法的具体用法？Golang Scope.HasColumn怎么用？Golang Scope.HasColumn使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/jinzhu/gorm.Scope的用法示例。
在下文中一共展示了Scope.HasColumn方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: reorderPositions
func reorderPositions(scope *gorm.Scope) {
if !scope.HasError() {
if _, ok := scope.Value.(sortingInterface); ok {
table := scope.TableName()
var additionalSQL []string
var additionalValues []interface{}
// with l10n
if locale, ok := scope.DB().Get("l10n:locale"); ok && locale.(string) != "" {
additionalSQL = append(additionalSQL, "language_code = ?")
additionalValues = append(additionalValues, locale)
}
additionalValues = append(additionalValues, additionalValues...)
// with soft delete
if scope.HasColumn("DeletedAt") {
additionalSQL = append(additionalSQL, "deleted_at IS NULL")
}
var sql = fmt.Sprintf("UPDATE %v SET position = (SELECT COUNT(pos) + 1 FROM (SELECT DISTINCT(position) AS pos FROM %v WHERE %v) AS t2 WHERE t2.pos < %v.position) WHERE %v", table, table, strings.Join(additionalSQL, " AND "), table, strings.Join(additionalSQL, " AND "))
if scope.NewDB().Exec(sql, additionalValues...).Error == nil {
// Create Publish Event
createPublishEvent(scope.DB(), scope.Value)
}
}
}
}示例2: afterUpdate
func afterUpdate(scope *gorm.Scope) {
if !scope.HasError() {
if isLocalizable(scope) {
if locale, ok := getLocale(scope); ok {
if scope.DB().RowsAffected == 0 && !scope.PrimaryKeyZero() { //is locale and nothing updated
var count int
var query = fmt.Sprintf("%v.language_code = ? AND %v.%v = ?", scope.QuotedTableName(), scope.QuotedTableName(), scope.PrimaryKey())
// if enabled soft delete, delete soft deleted records
if scope.HasColumn("DeletedAt") {
scope.NewDB().Unscoped().Where("deleted_at is not null").Where(query, locale, scope.PrimaryKeyValue()).Delete(scope.Value)
}
// if no localized records exist, localize it
if scope.NewDB().Table(scope.TableName()).Where(query, locale, scope.PrimaryKeyValue()).Count(&count); count == 0 {
scope.DB().Create(scope.Value)
}
}
} else if syncColumns := syncColumns(scope); len(syncColumns) > 0 { // is global
if mode, _ := scope.DB().Get("l10n:mode"); mode != "unscoped" {
if scope.DB().RowsAffected > 0 {
var primaryField = scope.PrimaryField()
var syncAttrs = map[string]interface{}{}
if updateAttrs, ok := scope.InstanceGet("gorm:update_attrs"); ok {
for key, value := range updateAttrs.(map[string]interface{}) {
for _, syncColumn := range syncColumns {
if syncColumn == key {
syncAttrs[syncColumn] = value
break
}
}
}
} else {
var fields = scope.Fields()
for _, syncColumn := range syncColumns {
if field, ok := fields[syncColumn]; ok && field.IsNormal {
syncAttrs[syncColumn] = field.Field.Interface()
}
}
}
if len(syncAttrs) > 0 {
db := scope.DB().Model(reflect.New(utils.ModelType(scope.Value)).Interface()).Set("l10n:mode", "unscoped").Where("language_code <> ?", Global)
if !primaryField.IsBlank {
db = db.Where(fmt.Sprintf("%v = ?", primaryField.DBName), primaryField.Field.Interface())
}
scope.Err(db.UpdateColumns(syncAttrs).Error)
}
}
}
}
}
}
}示例3: getQuery
func (item *QueryItem) getQuery(scope *gorm.Scope) (string, error) {
_, exists := allowedOps()[item.Op]
if !exists {
str := fmt.Sprintf("Invalid SQL operator: %s", item.Op)
return "", errors.New(str)
}
if !scope.HasColumn(item.Key) {
str := fmt.Sprintf("Column does not exist: %s", item.Key)
return "", errors.New(str)
}
var query string
if item.Op == "in" {
query = fmt.Sprintf("%s %s (?)", item.Key, item.Op)
} else {
query = fmt.Sprintf("%s %s ?", item.Key, item.Op)
}
return query, nil
}