Added GPS location and automatic location detection along with accuracy

[irshadshalu]

This PR adds automatic GPS location fetching for devices with GPS support and stores it in the database.

Also added is a "Open in maps" button for request list which directly opens the location in google maps

model fields added -

• latlng - GPS location as comma seperated field
• latlng_accuracy - accuracy of the GPS location.

view edited -

• Added latlng and latlng_accuracy to forms

html changes -

• Set GPS fields as readonly.
• Fetch GPS location using javascript.

[joicemjoseph]

it seems working. better to display accurate place name instead of latlong

[irshadshalu]

Can be easily done using
http://maps.googleapis.com/maps/api/geocode/json?latlng=8.5581139,76.8814559&sensor=false

But not sure if there is a daily API limit (As google maps APIs went rigorous with pricing

[sidharthv96]

Can't you request the google api from client side?
As long as the API works without a key, you can send an ajax when you get the lat lng, and then add the place to the form.

[irshadshalu]

Yeah, already tried that and here is the result

[sidharthv96]

That will mostly be IP based or cookie based. So if you request from client side, they won't hit the limit.

[irshadshalu]

No. I still can access the URL:
http://maps.googleapis.com/maps/api/geocode/json?latlng=8.5581139,76.8814559&sensor=false

And get the correct response, but not when running from localhost.

So it is probably domain based and not client IP or Cookie based.

[sadu]

GoogleMaps APIs no longer work without a key, we would need one to call their geo-coding APIs.
ref: https://developers.google.com/maps/documentation/geocoding/intro#ReverseGeocoding

[irshadshalu]

Added this using Nominatim API which uses OpenStreetMap,

Seems to be working fine, do check the new commit.

[biswaz]

Require testing before merge @vigneshhari

[irshadshalu]

I think we need to increase the timeout and maximum age.

[biswaz]

Merged and deployed to production

[biswaz]

2700 meters accuracy for me

[irshadshalu]

Are you trying from mobile or desktop?

I have removed the timeout and maximumAge in #89 . Do merge that as well, otherwise Accurate GPS will not be fetched before timeout.