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Merge pull request #870 from supar/add-column-default-attribute

Add column default attribute
This commit is contained in:
astaxie 2014-10-24 14:49:53 +08:00
commit c6cb1f92e8
2 changed files with 53 additions and 1 deletions

View File

@ -104,7 +104,11 @@ func getColumnAddQuery(al *alias, fi *fieldInfo) string {
typ += " " + "NOT NULL"
}
return fmt.Sprintf("ALTER TABLE %s%s%s ADD COLUMN %s%s%s %s", Q, fi.mi.table, Q, Q, fi.column, Q, typ)
return fmt.Sprintf("ALTER TABLE %s%s%s ADD COLUMN %s%s%s %s %s",
Q, fi.mi.table, Q,
Q, fi.column, Q,
typ, getColumnDefault(fi),
)
}
// create database creation string.
@ -155,6 +159,9 @@ func getDbCreateSql(al *alias) (sqls []string, tableIndexes map[string][]dbIndex
//if fi.initial.String() != "" {
// column += " DEFAULT " + fi.initial.String()
//}
// Append attribute DEFAULT
column += getColumnDefault(fi)
if fi.unique {
column += " " + "UNIQUE"
@ -239,3 +246,42 @@ func getDbCreateSql(al *alias) (sqls []string, tableIndexes map[string][]dbIndex
return
}
// Get string value for the attribute "DEFAULT" for the CREATE, ALTER commands
func getColumnDefault(fi *fieldInfo) string {
var (
v, t, d string
)
t = " DEFAULT '%s' "
// These defaults will be useful if there no config value orm:"default" and NOT NULL is on
switch fi.fieldType {
case TypeDateField:
d = "0000-00-00"
case TypeDateTimeField:
d = "0000-00-00 00:00:00"
case TypeBooleanField, TypeBitField, TypeSmallIntegerField, TypeIntegerField,
TypeBigIntegerField, TypePositiveBitField, TypePositiveSmallIntegerField,
TypePositiveIntegerField, TypePositiveBigIntegerField, TypeFloatField,
TypeDecimalField:
d = "0"
}
if fi.colDefault {
if !fi.initial.Exist() {
v = fmt.Sprintf(t, "")
} else {
v = fmt.Sprintf(t, fi.initial.String())
}
} else {
if !fi.null {
v = fmt.Sprintf(t, d)
}
}
return v
}

View File

@ -116,6 +116,7 @@ type fieldInfo struct {
null bool
index bool
unique bool
colDefault bool
initial StrTo
size int
auto_now bool
@ -280,6 +281,11 @@ checkType:
fi.pk = attrs["pk"]
fi.unique = attrs["unique"]
// Mark object property if there is attribute "default" in the orm configuration
if _, ok := tags["default"]; ok {
fi.colDefault = true
}
switch fieldType {
case RelManyToMany, RelReverseMany, RelReverseOne:
fi.null = false