forked from mirror/gorm
feat: migrator support type aliases (#5627)
* feat: migrator support type aliases * perf: check type
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@ -68,6 +68,7 @@ type Migrator interface {
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// Database
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CurrentDatabase() string
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FullDataTypeOf(*schema.Field) clause.Expr
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GetTypeAliases(databaseTypeName string) []string
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// Tables
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CreateTable(dst ...interface{}) error
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@ -408,9 +408,27 @@ func (m Migrator) MigrateColumn(value interface{}, field *schema.Field, columnTy
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alterColumn := false
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// check type
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if !field.PrimaryKey && !strings.HasPrefix(fullDataType, realDataType) {
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alterColumn = true
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if !field.PrimaryKey {
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// check type
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var isSameType bool
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if strings.HasPrefix(fullDataType, realDataType) {
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isSameType = true
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}
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// check type aliases
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if !isSameType {
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aliases := m.DB.Migrator().GetTypeAliases(realDataType)
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for _, alias := range aliases {
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if strings.HasPrefix(fullDataType, alias) {
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isSameType = true
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break
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}
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}
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}
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if !isSameType {
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alterColumn = true
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}
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}
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// check size
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@ -863,3 +881,8 @@ func (m Migrator) CurrentTable(stmt *gorm.Statement) interface{} {
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func (m Migrator) GetIndexes(dst interface{}) ([]gorm.Index, error) {
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return nil, errors.New("not support")
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}
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// GetTypeAliases return database type aliases
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func (m Migrator) GetTypeAliases(databaseTypeName string) []string {
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return nil
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}
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