Hi there,
I've got a repeat group in my form and I would like to ensure that one of
the questions inside will not accept the same value again when repeated.
Ideally I would like to use the current repeat count to populate the field.
Is there a way of counting which repeat I'm currently on and using that
number as part of an ID for a field inside the repeat group?
Any suggestions/useful links on this are much appreciated!
Thanks
Hi Korinna,
You can count the number of repeat you are on with position(..), but I
can't think of an easy way of using that count as part of the ID. Once
you are outside the repeat, you could probably use indexed-repeat
(https://opendatakit.org/help/form-design/binding/) to check for
duplicates and then warn the user then.
If I had this problem, I'd use a fixed number of questions instead of
repeats because it's so much easier to reason about.
Yaw
On Wed, Apr 20, 2016 at 1:12 AM, Korinna Pinakoulaki korinnapinakoulaki@universaldoctor.com wrote:
Hi there,
I've got a repeat group in my form and I would like to ensure that one of
the questions inside will not accept the same value again when repeated.
Ideally I would like to use the current repeat count to populate the field.
Is there a way of counting which repeat I'm currently on and using that
number as part of an ID for a field inside the repeat group?Any suggestions/useful links on this are much appreciated!
Thanks
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See this: https://opendatakit.org/help/form-design/#xpath_expressions
Doing this is generally tricky.
If your data-entry values are constrained so they do not contain embedded
spaces, you could use join(" ", ${repeatedfield}) to construct a
space-separated list of values.
The following should then work assuming the repeatgroup is immediately
enclosing repeatfield:
selected(join(" ", /path/to/repeatgroup[position(current()/..) !=
position(.)]/repeatedfield), .)
Where:
/path/to/repeatgroup[position(current()/..) != position(.)]/repeatedfield
takes all repeatfield values that are not from the current repeat of
the repeatgroup.
If you do allow spaces, I don't have a solution.
Hi Korinna,
You can count the number of repeat you are on with position(..), but I
can't think of an easy way of using that count as part of the ID. Once
you are outside the repeat, you could probably use indexed-repeat
(https://opendatakit.org/help/form-design/binding/) to check for
duplicates and then warn the user then.If I had this problem, I'd use a fixed number of questions instead of
repeats because it's so much easier to reason about.Yaw
Need ODK consultants? Nafundi provides form design, server setup,
in-field training, and software development for ODK. Go to
https://nafundi.com to get started.On Wed, Apr 20, 2016 at 1:12 AM, Korinna Pinakoulaki korinnapinakoulaki@universaldoctor.com wrote:
Hi there,
I've got a repeat group in my form and I would like to ensure that one of
the questions inside will not accept the same value again when repeated.
Ideally I would like to use the current repeat count to populate the
field.
Is there a way of counting which repeat I'm currently on and using that
number as part of an ID for a field inside the repeat group?Any suggestions/useful links on this are much appreciated!
Thanks
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Mitch Sundt
Software Engineer
University of Washington
mitchellsundt@gmail.com
Hello Mitch
Can you please send an example in xlsform of what you explained please?
Thanks