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apneadiving / Google-Maps-for-Rails

Enables easy Google map + overlays creation in Ruby apps
https://apneadiving.github.io/
MIT License
2.26k stars 382 forks source link

Display markers on a subset of the map #279

Closed niuage closed 12 years ago

niuage commented 12 years ago

I'd like a way to keep all the cool features of gmaps4rails, but on a subset of the map.

Basically, I wanted to copy the layout of the great "explore" page on foursquare: https://foursquare.com/explore?cat=topPicks&near=New%20York%20NY

You can see that the map takes the whole page, but the markers are displayed on a subset.

Any simple way I could achieve that with the current features provided by the gem?

Thanks.

apneadiving commented 12 years ago

You can get the bounds of the map in js, if I recall well: Gmaps.map.serviceObject.getBounds()

So you can send it through ajax to your server.

Then use geocoder to get the markers only included within the bounds.

On 20 oct. 2012, at 00:19, niuage notifications@github.com wrote:

I'd like a way to keep all the cool features of gmaps4rails, but on a subset of the map.

Basically, I wanted to copy the layout of the great "explore" page on foursquare: https://foursquare.com/explore?cat=topPicks&near=New%20York%20NY

You can see that the map takes the whole page, but the markers are displayed on a subset.

Any simple way I could achieve that with the current features provided by the gem?

Thanks.

— Reply to this email directly or view it on GitHub.

niuage commented 12 years ago

I was thinking more of something like that:

A bit like we currently have with the auto zoom. The difference being that the autozoom wouldn't take into account the whole map, but a subset.

niuage commented 12 years ago

Actually, what you proposed might be better...

Still not sure how to get the bounds of the visible part of the map, but that's another problem not related to the gem ;)

apneadiving commented 12 years ago

Yes almost the same principle.

If you have auto_adjust enabled, the map, replace the markers and the map will fit your markers.

Sent from my iPhone

On 20 oct. 2012, at 00:39, niuage notifications@github.com wrote:

I was thinking more of something like that:

user search for a location get the objects near this location (server side) find a way to auto zoom so that the markers are within the visible part of the map. — Reply to this email directly or view it on GitHub.

apneadiving commented 12 years ago

In other words, use: 

Gmaps.map.replaceMarkers(json)

To have everything handled for you.

Sent from my iPhone

On 20 oct. 2012, at 00:47, niuage notifications@github.com wrote:

Sorry, I don't see what you mean in this last sentence...

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niuage commented 12 years ago

Thanks.