Hi All,
This is slightly related to my previous thread today, but more general.
I want to gauge interested in this idea.
I want to be able to use Runtime Substitution mechanisms to do something like
this:
MAP
...
VALIDATION
"datetime" "^([0-9]{4})[-_]([0-9]{2})[-_]([0-9]{2})$" # <- 3 capture groups
END
LAYER
DATA "/mnt/dataset/%datetime_1%/%datetime_2%/%datetime_3%.tif"
...
END
...
END
Where the query with &datetime=2018-01-29 is split into parts using capture
groups 1, 2, and 3 from the validation regex, and stored as new runtime
substitution variables: %datetime_1%, %datetime_2%, and %datetime_3%.
Then using these values, substitute them into the DATA string (or any other
valid substitution point).
Substituted:
DATA "/mnt/dataset/2018/01/29.tif"
The regex mechanism to validate the incoming parameter value is already in
place, and it seems like just one more little step is needed to save the
captured groups into new runtime substitution variables.
- Ashley Sommer
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