func fields(typ reflect.Type) map[string][]int {
num := typ.NumField()
dst := make(map[string][]int, num)
for i := 0; i < num; i++ {
f := typ.Field(i)
if f.Anonymous {
typ := f.Type
if typ.Kind() == reflect.Ptr {
typ = typ.Elem()
}
for name, indx := range fields(typ) {
dst[name] = append(f.Index, indx...)
}
continue
}
if f.PkgPath != "" {
continue
}
tokens := strings.Split(f.Tag.Get("pg"), ",")
name := tokens[0]
if name == "-" {
continue
}
if name == "" {
name = pgutil.Underscore(f.Name)
}
dst[name] = f.Index
}
return dst
}
func (t *DBTest) TestFormattingColumnNames(c *C) {
c.Assert(pgutil.Underscore("Megacolumn"), Equals, "megacolumn")
c.Assert(pgutil.Underscore("MegaColumn"), Equals, "mega_column")
c.Assert(pgutil.Underscore("MegaColumn_Id"), Equals, "mega_column__id")
c.Assert(pgutil.Underscore("MegaColumn_id"), Equals, "mega_column_id")
}