[mapserver-users] Setting up a JSONP service

[Lars Fricke]

Hello,

first of all: Thank you for your support!
Sorry for the late reply but I unfortunately was ill.

@ Steve:
I read about templating but also read that it is slower?
I do not have a lot of experience in writing templates. Would you mind 
sharing a JSONP template?

@ Even: Thank you for your thoughts. Who would implement that change 
though? I'm afraid I can't.

@ Jeff: I followed those links but I only found threads referring to 
GeoServer or that were not related to my question. The GDAL page I did 
study and that's how I managed to set up the GeoJSON service but thats 
not the same unfortunately as it conflicts with the same origin policy.

Best

Lars

Am 30.12.2014 um 16:24 schrieb Lime, Steve D (MNIT):
> You can also use MapServer templates to accomplish this. It's a little more work since you have to write the template but it's quite flexible then. Usually I write the template to produce JSON and then use a simple wrapper template to produce JSONP. For example, jsonp.js looks like (callback is passed in):
>
> // MapServer Template
> [callback](
>    [include src="templates/json.js"]
> )
>
> Output formats look like:
>
>    OUTPUTFORMAT
>      NAME 'JSON'
>      DRIVER 'TEMPLATE'
>      MIMETYPE 'application/json;'
>      FORMATOPTION 'FILE=templates/json.js'
>      FORMATOPTION 'ATTACHMENT=service.json'
>    END
>
>    OUTPUTFORMAT
>      NAME 'JSONP'
>      DRIVER 'TEMPLATE'
>      MIMETYPE 'application/json;'
>      FORMATOPTION 'FILE=templates/jsonp.js'
>      FORMATOPTION 'ATTACHMENT=service.json'
>    END
>
> Steve
>
> -----Original Message-----
> From:mapserver-users-bounces at lists.osgeo.org  [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Lars Fricke
> Sent: Monday, December 29, 2014 5:34 AM
> To:mapserver-users at lists.osgeo.org
> Subject: [mapserver-users] Setting up a JSONP service
>
> Dear List,
>
> I have a WFS service running under MapServer that I would like to operate as JSONP service. I managed to set GEOJSON as output format but I get "Cross-Origin-Request Blocked" if I try to call it with a Javascript client (using Leaflet L.layerJSON.
> The question is: Is it possible to set up a JSONP service from Mapserver and if yes, how? My current mapfile looks like this (relevant parts):
>
> "
> # in WEB - METADATA
> "wfs_getfeature_formatlist" "geojson,csv,ogrgml"
>
> OUTPUTFORMAT
>      NAME "geojson"
>      DRIVER "OGR/GEOJSON"
>      MIMETYPE "application/json; subtype=geojson; charset=utf-8"
>      FORMATOPTION "STORAGE=stream"
>      FORMATOPTION "FORM=SIMPLE"
>      FORMATOPTION "LCO:COORDINATE_PRECISION=5"
>     END
> "
> If this would already be a correct JSONP service, I have to look on the Leaflet side for the error...
> Thanks for your help.
>
> Cheers
>
> Lars
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