[Question] Is this kind of inheritance possible? #5434

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admin · 2026-01-22T15:07:43+01:00

admin commented

2026-01-22 15:07:43 +01:00

Originally created by @valepu on GitHub (Feb 27, 2017).

Originally assigned to: @Ocramius on GitHub.

I'm not sure how to call it, but i have a situation where rows in one table provide default values for rows into another table which can override them.
I have asked this on Stackoverflow but got no answer: http://stackoverflow.com/questions/42432689/extend-doctrine-2-model-with-new-values-for-fields

base_item
    Id | val1 | val2 | val3
    -----------------------
    1  |  a   |  b   |  c
item
    Id | base | val1 | val2 | val4
    -------------------------------
    3  |  1   |   z  | NULL | d
the base column is a foreign key to base_item.
I'd like to create a model where item's class extends base_item and if the same field is declared in both tables then it behaves this way:

If item's value is null then use base_item's one (in this example item.val2 is "b"), otherwise use item's value (in this example item.val1 is "z").

So, i was wondering if this kind of behavior is natively supported by Doctrine (or some extension) using some kind of inheritance or i just have to manually implement it in my model

Originally created by @valepu on GitHub (Feb 27, 2017). Originally assigned to: @Ocramius on GitHub. I'm not sure how to call it, but i have a situation where rows in one table provide default values for rows into another table which can override them. I have asked this on Stackoverflow but got no answer: http://stackoverflow.com/questions/42432689/extend-doctrine-2-model-with-new-values-for-fields > base_item > > ``` > Id | val1 | val2 | val3 > ----------------------- > 1 | a | b | c > ``` > > item > > ``` > Id | base | val1 | val2 | val4 > ------------------------------- > 3 | 1 | z | NULL | d > ``` > > > the `base` column is a foreign key to `base_item`. > I'd like to create a model where item's class extends base_item and if the same field is declared in both tables then it behaves this way: > > If item's value is null then use base_item's one (in this example `item.val2` is "b"), otherwise use item's value (in this example `item.val1` is "z"). > So, i was wondering if this kind of behavior is natively supported by Doctrine (or some extension) using some kind of inheritance or i just have to manually implement it in my model

admin added the Won't Fix Question labels 2026-01-22 15:07:43 +01:00

admin closed this issue

2026-01-22 15:07:43 +01:00

admin commented

2026-01-22 15:07:44 +01:00

@Ocramius commented on GitHub (Feb 27, 2017):

Not supported: you will most probably need a prePersist or preUpdate listener to do that manually.

Closing as wontfix

@Ocramius commented on GitHub (Feb 27, 2017): Not supported: you will most probably need a `prePersist` or `preUpdate` listener to do that manually. Closing as `wontfix`

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Reference: doctrine/archived-orm#5434