A small bug when generate

[qiukeren]

when using

package model

//+AR
type User struct {
    Id     int `db:"users"`
    Uname  string
    Unick  string
    Avatar string
    Token  string
    //Deleted_at time.Time
    //Updated_at time.Time
    //Created_at time.Time
    Depart int
}

It generates Id incorrectly in some condition:

> Output:
project/model
# project/model
model/user_gen.go:183: m.ID undefined (type *User has no field or method ID, but does have Id)
model/user_gen.go:212: m.ID undefined (type *User has no field or method ID, but does have Id)
model/user_gen.go:224: m.ID undefined (type *User has no field or method ID, but does have Id)
model/user_gen.go:286: m.ID undefined (type *User has no field or method ID, but does have Id)
(only the four places are mixed up with ID,and other places are correct:Id)

However,it is correct when using ID(two upper cases)