fetches records for map display as ajax

[pvgenuchten]

Overview

The PR suggests to fetch records as ajax for loading on map, instead of rendering geojson inline

Related Issue / Discussion

#948

Contributions and Licensing

(as per https://github.com/geopython/pycsw/blob/master/CONTRIBUTING.rst#contributions-and-licensing)

• I'd like to contribute [feature X|bugfix Y|docs|something else] to pycsw. I confirm that my contributions to pycsw will be compatible with the pycsw license guidelines at the time of contribution.
• I have already previously agreed to the pycsw Contributions and Licensing Guidelines

[tomkralidis]

Thanks @pvgenuchten. I guess the question here is weighing 2 HTTP requests vs 1 (with a bigger response length because of the data inline in JavaScript). Adding @kalxas and @ricardogsilva for any comments.

[pvgenuchten]

Correct, indeed good to make an analysis of pro's and con's.

• Having 2 requests creates a larger total (and more cpu), but for each of the individual responses they will be smaller.

Other direction here could be to dump only bbox, id & title in the html, not the full features dict

[pvgenuchten]

closing this for limited interest