Jeroen De Dauw wrote:
> Hey,
>
> I'm looking for a way to change values passed to a parser function when it's
> executed. This would be to change addresses in the parser functions of the
> Maps extension into coordinates, so the geocoding doesn't need to happen
> every time the parser function is executed.
>
> Example:
>
> You enter:
> {{display_map:foobar}}
>
> Then save the page, and when you edit, it shows:
> {{display_map:93.42, 12.34}}
>
> What hook would be suited for such a thing?
>
> Cheers
>
> --
> Jeroen De Dauw
There's no hook in the preSaveTransform()
And it's much saner this way.
Your use case has several problems:
*You are saving something very different than what the user has wrote.
*What if the geocoding is later improved and foobar now maps to 93.37,
12.338 ?
*The user misspelt foobar as foobaz, which happens to be in 7.21, 148.4
How would other users /easily) detect that mistake?
*foobar doesn't exist now and isn't translated. It gets added later, and
it's substituted on the next page save, which may be totally unrelated.
*It's not obvious on [[foobar]] that the map is pointing to the correct
coordinates (the user could have written foobar, or a wrong coord).
You want to not do the geocoding on each parserfunction call. Great,
cache it in $wgMemc and recover from there when needed.
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