Nil object nightmare

I’m having a real problem with nil objects in a view I’m playing with.

if I type …

<%= debug lesson.lesson_register.attendees %>

I get the following displayed in the browser …

  • !ruby/object:Attendee
    attributes:
    enrollee_id: “25”
    created_at: 2009-08-27 15:10:41
    updated_at: 2009-08-27 15:10:41
    id: “1”
    attended: f
    lesson_register_id: “1”
    attributes_cache: {}

  • !ruby/object:Attendee
    attributes:
    enrollee_id: “26”
    created_at: 2009-08-27 15:10:41
    updated_at: 2009-08-27 15:10:41
    id: “2”
    attended: t
    lesson_register_id: “1”

    attributes_cache: {}

if I type …

<%= debug lesson.lesson_register.attendees[0] %>

I get correctly …

— !ruby/object:Attendee
attributes:
enrollee_id: “25”
created_at: 2009-08-27 15:10:41
updated_at: 2009-08-27 15:10:41
id: “1”
attended: f
lesson_register_id: “1”
attributes_cache: {}

BUT, when I type …

<%= debug lesson.lesson_register.attendees[0].created_at %>

I get …

You have a nil object when you didn’t expect it!
The error occurred while evaluating nil.created_at

Extracted source (around line #7):

7: <%= debug lesson.lesson_register.attendees[0].created_at %>

Can someone tell me what I’m doing wrong.

TIA

-Ants


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