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Add field tag to ignore migration

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This commit is contained in:
yrong1997 2021-01-31 13:39:00 +08:00
parent 7598204dc3
commit bce40e6d6a
3 changed files with 7 additions and 1 deletions
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1
.gitignore vendored
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@ -2,3 +2,4 @@ TODO*
documents documents
coverage.txt coverage.txt
_book _book
.idea

2
migrator/migrator.go
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@ -396,7 +396,7 @@ func (m Migrator) MigrateColumn(value interface{}, field *schema.Field, columnTy
} }
} }
if alterColumn { if alterColumn && !field.IgnoreMigration {
return m.DB.Migrator().AlterColumn(value, field.Name) return m.DB.Migrator().AlterColumn(value, field.Name)
} }

5
schema/field.go
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@ -70,6 +70,7 @@ type Field struct {
ReflectValueOf func(reflect.Value) reflect.Value ReflectValueOf func(reflect.Value) reflect.Value
ValueOf func(reflect.Value) (value interface{}, zero bool) ValueOf func(reflect.Value) (value interface{}, zero bool)
Set func(reflect.Value, interface{}) error Set func(reflect.Value, interface{}) error
IgnoreMigration bool
} }
func (schema *Schema) ParseField(fieldStruct reflect.StructField) *Field { func (schema *Schema) ParseField(fieldStruct reflect.StructField) *Field {
@ -188,6 +189,10 @@ func (schema *Schema) ParseField(fieldStruct reflect.StructField) *Field {
field.Comment = val field.Comment = val
} }
if _, ok := field.TagSettings["IGNOREMIGRATION"]; ok {
field.IgnoreMigration = true
}
// default value is function or null or blank (primary keys) // default value is function or null or blank (primary keys)
skipParseDefaultValue := strings.Contains(field.DefaultValue, "(") && skipParseDefaultValue := strings.Contains(field.DefaultValue, "(") &&
strings.Contains(field.DefaultValue, ")") || strings.ToLower(field.DefaultValue) == "null" || field.DefaultValue == "" strings.Contains(field.DefaultValue, ")") || strings.ToLower(field.DefaultValue) == "null" || field.DefaultValue == ""