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AddUniqueIndex

This commit is contained in:
Vladimir Garvardt 2014-06-01 02:35:56 +04:00
parent cdce84fd1a
commit d1dc0ccbef
4 changed files with 28 additions and 4 deletions
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8
README.md
View File

@ -930,7 +930,13 @@ db.Table("users").Select("users.name, emails.email").Joins("left join emails on
db.Model(User{}).AddIndex("idx_user_name", "name")
// multiple column index
db.Model(User{}).AddIndex("idx_user_name", "name", "age")
db.Model(User{}).AddIndex("idx_user_name_age", "name", "age")
// single column unique index
db.Model(User{}).AddUniqueIndex("idx_user_name", "name")
// multiple column unique index
db.Model(User{}).AddUniqueIndex("idx_user_name_age", "name", "age")
```
## Run Raw SQL

7
main.go
View File

@ -315,7 +315,12 @@ func (s *DB) DropColumn(column string) *DB {
}
func (s *DB) AddIndex(indexName string, column ...string) *DB {
s.clone().NewScope(s.Value).addIndex(indexName, column...)
s.clone().NewScope(s.Value).addIndex(false, indexName, column...)
return s
}
func (s *DB) AddUniqueIndex(indexName string, column ...string) *DB {
s.clone().NewScope(s.Value).addIndex(true, indexName, column...)
return s
}

8
main_test.go
View File

@ -2026,7 +2026,15 @@ func TestIndices(t *testing.T) {
if err := db.Model(&UserCompany{}).RemoveIndex("idx_user_company_user").Error; err != nil {
t.Errorf("Got error when tried to remove index: %+v", err)
}
if err := db.Model(&UserCompany{}).AddIndex("idx_user_company_user_company", "user_id", "company_id").Error; err != nil {
t.Errorf("Got error when tried to create index: %+v", err)
}
if err := db.Model(&UserCompany{}).RemoveIndex("idx_user_company_user_company").Error; err != nil {
t.Errorf("Got error when tried to remove index: %+v", err)
}
if err := db.Model(&UserCompany{}).AddUniqueIndex("idx_user_company_user_company", "user_id", "company_id").Error; err != nil {
t.Errorf("Got error when tried to create index: %+v", err)
}
}

9
scope_private.go
View File

@ -431,13 +431,18 @@ func (scope *Scope) dropColumn(column string) {
scope.Raw(fmt.Sprintf("ALTER TABLE %v DROP COLUMN %v", scope.Quote(scope.TableName()), scope.Quote(column))).Exec()
}
func (scope *Scope) addIndex(indexName string, column ...string) {
func (scope *Scope) addIndex(unique bool, indexName string, column ...string) {
var columns []string
for _, name := range column {
columns = append(columns, scope.Quote(name))
}
scope.Raw(fmt.Sprintf("CREATE INDEX %v ON %v(%v);", indexName, scope.Quote(scope.TableName()), strings.Join(columns, ", "))).Exec()
sqlCreate := "CREATE INDEX"
if unique {
sqlCreate = "CREATE UNIQUE INDEX"
}
scope.Raw(fmt.Sprintf("%s %v ON %v(%v);", sqlCreate, indexName, scope.Quote(scope.TableName()), strings.Join(columns, ", "))).Exec()
}
func (scope *Scope) removeIndex(indexName string) {