Thanks Tom, I much appreciate these libraries which I already planned to 
use, but wasn't quite sure how to layer my requirements on top of them - I 
think the primary issue is how to have many records of people that I can 
manipulate easily (e.g. in DataStore, Search API is a bad match for this I 
think?) and also work out the nearest other people to them based on a human 
readable address (or postcode at least). Do you recommend or use any 
particular methods for Geocoding? As mentioned by barryhunter above use of 
the Maps APIs requires display of, and results put on, a Google Map, which 
is not necessarily what I want. These guys look like a potential 
alternative tho: http://geocoder.opencagedata.com/

Thanks again,
Alex

On Tuesday, January 5, 2016 at 7:26:29 PM UTC, Tom Walder wrote:
>
> Hi Alex,
>
> You can do all of this on App Engine, with PHP using the native Search API.
>
> I usually keep my transactional data in Datastore and then the "searchy" 
> stuff, including Geo search in the Search API (when I'm, not using 
> Elasticsearch).
>
> You will need one or more of these open source libraries (which I wrote 
> [disclaimer)) - They are using the native Google Protocol Buffers API, same 
> as the Python/Java/Go runtimes, so they are super quick.
>
> For Datastore
> https://github.com/tomwalder/php-gds
>
> For Search API - there are specific examples and helper methods for Geo.
> https://github.com/tomwalder/php-appengine-search
> http://pub-search.appspot.com/
>
> Some more reading
>
> https://gae-php-tips.appspot.com/2015/12/19/making-cloud-datastore-easy-for-php-on-app-engine/
>
> Enjoy!
>
> Tom
>
>
>
>
>
> On Monday, 4 January 2016 20:50:44 UTC, Alex Kerr wrote:
>>
>> Hi all,
>> Wondering how best to implement some basic geolocation stuff using Google 
>> Cloud products (and open source if appropriate)
>>
>> I need to search user records I'm storing in Datastore, which include the 
>> user's address (in ordinary human readable text format) to see which other 
>> users are within a certain distance from them. Seems I can't do a 
>> geospatial search directly on Datastore records but found something that 
>> suggests a clever little mashup with Google's Search API: 
>> http://ralphbarbagallo.com/2013/05/14/app-engine-geospatial-datastore-search-a-new-way/
>>
>> Questions:
>> 1.) Is there any better (/more standard) way than what's suggested at 
>> that link? (I know Cloud SQL allows geospatial searches but ideally I want 
>> to use Datastore if possible to store my data in)
>> 2.) Geospatial matches (at least using above techniques) need latitude 
>> and longitude - are there any Google APIs or open source PHP stuff I could 
>> use to convert addresses into lat/lon?
>>
>> I'm running on PHP AppEngine by the way and need a solution I can 
>> implement very quickly and easily if at all possible!
>>
>> Many thanks for any info/suggestions!
>>
>

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