Way to know the current repeat iteration position

[ebruchez]

From within a repeated grid or section, you would think you could use xxf:repeat-position(), but it doesn't work. Ideally, we'd like a Form Runner function anyway. Suggestions:

• fr:current-repetition()
• fr:repetition-index()
• fr:repetition-position()
• fr:current-row-number()
• fr:row-number()

Workarounds (repeated section, 2019.1 repeated grid):

count(../preceding-sibling::*) + 1

Workarounds (2018.2 and earlier repeated grid):

count(../preceding-sibling::my-grid-name) + 1

+1 from customer

[ebruchez]

See also #3189 which calls for a built-in feature to show a row number.

[avernet]

+1 from user

[avernet]

+1 from customer

[ebruchez]

For nested repetitions:

• either pass a name
  • drawback: need to rename if enclosing section is renamed
• or an optional level
  • 1 → closest parent
  • 2 → one level further, etc. (returns empty sequence if no such level)

[ebruchez]

The reason xxf:repeat-position() doesn't work is that it is evaluated in the model, where there are no <xf:repeat>.

[ebruchez]

This must work in formulas as well, in particular with relevant, readonly, and calculate.

[ebruchez]

We have BindingContext.position. This is used xxf:repeat-position(), but there is also logic that identifies explicitly repeat ancestors to find the binding whose position must be read. In the model, everything is a bind, so how can we do the same? With Form Runner, we have by default foo-iteration as name, but if the form author picks a custom iteration name, then we don't have the -iteration suffix.

[avernet]

+1 from customer

[MatousAc]

Was this ever resolved? Or do I still have to use the janky workaround? I can't get xff:repeat-position() to work.

[ebruchez]

@MatousAc I don't think it's been addressed yet. Let's try to get this fixed in a release soon.