CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4gmaps4railsgmaps4rails2
dmt2989
dmt2989

Reputation: 1620

Gmaps4rails V2 - change default zoom

I'm a complete noob, building my first rails app. I successfully implemented Google-maps-for-rails V2, using apneadiving's tutorial on youtube: http://www.youtube.com/watch?v=R0l-7en3dUw&feature=youtu.be

My issue is that for each of my maps, I'm only showing one marker, and when the map loads, it adjusts to be fully zoomed.

Searching around, there seems to be a lot of solutions for earlier versions of Gmaps4rails, but with V2, and creating the map via javascript, I can't seem to find a solution that works.

For reference, my code is below:

View:

    <script type="text/javascript">
      handler = Gmaps.build('Google');
      handler.buildMap({ provider: {}, internal: {id: 'map'}}, function(){
      markers = handler.addMarkers(<%=raw @hash.to_json %>);
      handler.bounds.extendWith(markers);
      handler.fitMapToBounds();
      }); </script>

Controller:

def show
  @pins = Pin.find(params[:id])
  @hash = Gmaps4rails.build_markers(@pins) do |pin, marker|
    marker.lat pin.latitude
    marker.lng pin.longitude
  end
end

I tried making changes via the console using: gmap.setzoom(12), as suggested by some post, but haven't had any luck with that .

Any help is much appreciated

Answer that worked for me: change view to:

  <script type="text/javascript">
  handler = Gmaps.build('Google');
  handler.buildMap({ provider: {}, internal: {id: 'map'}}, function(){
  markers = handler.addMarkers(<%=raw @hash.to_json %>);
  handler.bounds.extendWith(markers);
  handler.fitMapToBounds();
  handler.getMap().setZoom(12);
  }); </script>

Thanks for the help!

Upvotes: 23

Views: 6861

Answers (3)

TenJack
TenJack

Reputation: 1632

Another option is to use handler.map.centerOn(marker):

      handler = Gmaps.build('Google');
      handler.buildMap({
      provider: {
        draggable: false,
        Zoom: 15
      },
      internal: {
        id: 'map'
      }
    },
    function(){
      marker = handler.addMarker(
        {
          "lat": lat,
          "lng": lng,
          "picture": {
            "url": "https://addons.cdn.mozilla.net/img/uploads/addon_icons/13/13028-64.png",
            "width":  36,
            "height": 36
          },
          "infowindow": "hello!"
        }
      );
      handler.map.centerOn(marker);
    }
  );

Upvotes: 0

Rajesh Gurbani
Rajesh Gurbani

Reputation: 211

Just Try This,

<script type="text/javascript">
      handler = Gmaps.build('Google');
      handler.buildMap({ provider: { Zoom: 3 }, internal: {id: 'map'}}, function(){
      markers = handler.addMarkers(<%=raw @hash.to_json %>);
      handler.bounds.extendWith(markers);
      handler.fitMapToBounds();
      }); </script>

OR

handler.getMap().setZoom(yourValue);

It Should work.....

Upvotes: 0

apneadiving
apneadiving

Reputation: 115541

remove:

handler.fitMapToBounds();

Replace with:

handler.getMap().setZoom(yourValue);

Upvotes: 35

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