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Set field size from primary fields to foreign fields

This commit is contained in:
Jinzhu 2020-09-03 16:11:15 +08:00
parent cf31508095
commit f2adb088c5
2 changed files with 12 additions and 0 deletions
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3
gorm.go
View File

@ -319,6 +319,9 @@ func (db *DB) SetupJoinTable(model interface{}, field string, joinTable interfac
if f := joinSchema.LookUpField(ref.ForeignKey.DBName); f != nil {
f.DataType = ref.ForeignKey.DataType
f.GORMDataType = ref.ForeignKey.GORMDataType
if f.Size == 0 {
f.Size = ref.ForeignKey.Size
}
ref.ForeignKey = f
} else {
return fmt.Errorf("missing field %v for join table", ref.ForeignKey.DBName)

9
schema/relationship.go
View File

@ -165,6 +165,9 @@ func (schema *Schema) buildPolymorphicRelation(relation *Relationship, field *Fi
// use same data type for foreign keys
relation.Polymorphic.PolymorphicID.DataType = primaryKeyField.DataType
relation.Polymorphic.PolymorphicID.GORMDataType = primaryKeyField.GORMDataType
if relation.Polymorphic.PolymorphicID.Size == 0 {
relation.Polymorphic.PolymorphicID.Size = primaryKeyField.Size
}
relation.References = append(relation.References, &Reference{
PrimaryKey: primaryKeyField,
@ -301,6 +304,9 @@ func (schema *Schema) buildMany2ManyRelation(relation *Relationship, field *Fiel
// use same data type for foreign keys
f.DataType = fieldsMap[f.Name].DataType
f.GORMDataType = fieldsMap[f.Name].GORMDataType
if f.Size == 0 {
f.Size = fieldsMap[f.Name].Size
}
relation.JoinTable.PrimaryFields = append(relation.JoinTable.PrimaryFields, f)
ownPriamryField := schema == fieldsMap[f.Name].Schema && ownFieldsMap[f.Name]
@ -436,6 +442,9 @@ func (schema *Schema) guessRelation(relation *Relationship, field *Field, gl gue
// use same data type for foreign keys
foreignField.DataType = primaryFields[idx].DataType
foreignField.GORMDataType = primaryFields[idx].GORMDataType
if foreignField.Size == 0 {
foreignField.Size = primaryFields[idx].Size
}
relation.References = append(relation.References, &Reference{
PrimaryKey: primaryFields[idx],