type **time.Time has no field or method

[jgautheron]

With the code generated from the setup below, I'm getting the following error:

models/survey_helper.go:48: tmp1.EndsAtToEndsAt undefined (type **time.Time has no field or method EndsAtToEndsAt)
models/survey_helper.go:52: tmp2.StartsAtToStartsAt undefined (type *time.Time has no field or method StartsAtToStartsAt)

Here's the relevant generated part from models/survey_helper.go:

// SurveyToSurvey loads a Survey and builds the default view of media type Survey.
func (m *Survey) SurveyToSurvey() *app.Survey {
    survey := &app.Survey{}
    tmp1 := &m.EndsAt
    survey.EndsAt = tmp1.EndsAtToEndsAt() // %!s(MISSING)
    survey.ID = m.ID
    survey.Name = m.Name
    tmp2 := &m.StartsAt
    survey.StartsAt = tmp2.StartsAtToStartsAt() // %!s(MISSING)
    survey.Status = m.Status

    return survey
}

Setup

// models.go
// extract from StorageGroup
Model("Survey", func() {
  BuildsFrom(func() {
    Payload("survey", "create")
    Payload("survey", "update")
  })
  RendersTo(SurveyMedia)
  HasMany("Questions", "Question")
  Field("id", gorma.UUID, func() {
    PrimaryKey()
  })
})

// payload.go
var SurveyPayload = Type("SurveyPayload", func() {
    Reference(SurveyMedia)
    Attribute("name")
    Attribute("startsAt")
    Attribute("endsAt")
    Attribute("status")
    Required("name")
})

// media_types.go
var SurveyMedia = MediaType("application/vnd.survey+json", func() {
    Description("A survey")
    Attributes(func() {
        Attribute("id", UUID, "Unique survey ID")
        Attribute("name", String, "Name of survey")
        Attribute("startsAt", DateTime, "Start date")
        Attribute("endsAt", DateTime, "End date")
                // ...
    })
})

Any idea what might be wrong?