In order to correct the information about a person in the family tree as a family tree user, I want to be able to edit the data of a person I choose.
I didn't like this item from the start, because it seemed to me rather complicated to develop. When I think about it now, it doesn't seem that complicated. But for the purpose of training, I need to ask a question: can we do anything smaller, break it into smaller parts or do any other trick to achieve something similar quicker than if we were to develop it as is.
As always, there is something we can do. The aim here is correct data. If we add a new item that introduces deletion of people from the tree, it will be possible to delete a person with incorrect data and then add same person again, this time with good data. Maybe a little awkward to the user, but if we desperately wanted to deliver the "correction" functionality quickly, then maybe we could get away with this approach and deliver real editing functionality one iteration later.
But there's a catch: if we delete a person and add them again, then the "new" person will have a new, unique identifier and the identifier of the deleted person may be spread in several other records (children).
It may be a good point for the training to suggest the deceitful solution with deletions and see when the trainees are able to spot this problem. At planning? Maybe during the development? Maybe someone writing a test for it will be able to spot it quickest?
After thinking about all of this, I conclude that deletions are important (but are not good substitutes for editions) and they deserve to be a product backlog item on their own.
This is how I would order the product backlog item now:
- In order to make corrections in the family tree as a family tree user, I want to be able to delete a person from the tree
- In order for the family tree to be easier to read as a family tree user, I want the graphical representation of the tree to alternately use one of two different colors for each generation
- In order for the family tree to be easier to read as a family tree user, I want the graphical representation of the tree to rotate colors of generations from a predefined set of colors
- In order to maintain integrity of family tree data as a family tree user, I want the identifiers of the parents checked (natural numbers, identifiers are optional) and blocked from being entered if invalid
- In order to maintain integrity of family tree data as a family tree user, I want the identifiers of the parents checked to be existing identifiers of people already existing in the tree and blocked from being entered if that is not the case
- In order to disallow non-logical connections in the family tree as a family tree user, I want to be blocked from pointing a person as their own parent
- In order to disallow non-logical connections in the family tree as a family tree user, I want to be blocked from pointing the same person as both mother and father of someone
That's it. The next post will outline how I imagine the training should be conducted.