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YangYang's avatar
YangYang
Qrew Member
10 years ago

How do you use snapshot on fields from the same table?

I'm trying to manage hundreds of dates.  The reason for snapshot is so that if the one date gets changes, I'll still have record of the original date no matter how many times its been changed.  Unfortunately, you can't pull lookup field from the same table.  So instead, I have tried to create relationship of the table with itself so I can have that lookup field but that didn't work out.  What I want is the first time Construction Date is filled, so does the Original Construction Date.  When Construction Date got pushed down, even a few times, the Original Construction Date will stay the same.  Can anyone help me out?

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  • QuickBaseCoachD's avatar
    QuickBaseCoachD
    Qrew Captain
    10 years ago
    Well, in fact you can relate a table to itself and pull snapshot field.  Make a formula numeric field called [Record ID# mirror] with formula of [Record ID#] and make your reference field on the right side of the relationship that field.  Pull down [Construction Date lookup] as a lookup and then make a field called [Original Construction Date] as a snapshot of [Construction Date Lookup].



    Be sure that Construction date is a required field or else it will snapshot a blank Construction date.
    • GianniGiacchi's avatar
      GianniGiacchi
      Qrew Trainee
      7 years ago
      I am in the situation where the date field i need to snapshot is not and cannot be required because it usually gets populated a few weeks after the record is made. However, I do not want a blank snapshot. I want a snapshot of that date field when it is first changed/populated with a non-zero date.

      Is this possible to achieve?
    • QuickBaseCoachD's avatar
      QuickBaseCoachD
      Qrew Captain
      7 years ago
      You could have a checkbox field called Lock date edits. 

      Then have a form rule that says 
      when the record is saved and the date is not blank
      then
      Action change lock date edits to checked.

      Then another form rule to make read only date when that checkbox is checked.
  • YangYang's avatar
    YangYang
    Qrew Member
    10 years ago
    So I made formula numeric field called [Record ID# mirror] with Record ID# inside.  I also made the  [Construction Date lookup] as a lookup and made a field called [Original Construction Date] and snapped that to lookup.  I think I'm just missing the middle part, the connection between Record ID# mirror to the lookup field.  Can you please elaborate?
  • ArchiveUser's avatar
    ArchiveUser
    Qrew Captain
    10 years ago
    Were you able to resolve this? I am trying to create something similar. I am confuse with the answer given to your questions. Any help you can provide me, would be great!
  • PaulVorster1's avatar
    PaulVorster1
    Qrew Cadet
    7 years ago
    HI Guys, Have you managed to get this working? As I need help with this?
    • QuickBaseCoachD's avatar
      QuickBaseCoachD
      Qrew Captain
      7 years ago
      I suggest that you post a new question as there are a variety of ways to achieve this such as form rules and Actions.  Actions, for example, did not exists 3 years ago when this question was posted.