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POUse of a loop in javascript using an instance varibale as data source from rails controller
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  1. POUse of a loop in javascript using an instance varibale as data source from rails controller
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    copied!<p>I need to display a google map with several markers. The problem I have is to set all the markers on the map. I have a city controller and a map view. Here is the relevant code:</p> <p>city_cntroller.rb</p> <pre><code>def map @city = City.find(params[:id]) @mapcenter = @city.geocode @businesses = @city.businesses @numberofbusinesses = @city.businesses.count end </code></pre> <p>map.html.haml</p> <pre><code>%script{:type =&gt; "text/javascript", :charset =&gt; "utf-8", :src =&gt; "http://maps.googleapis.com/maps/api/js?v=3.6&amp;sensor=false&amp;region=IN"} %script{:type =&gt; "text/javascript"} function initialize() { var cityLatlng = new google.maps.LatLng( = @mapcenter[0] , = @mapcenter[1] ); var options = { zoom: 12, center: cityLatlng, mapTypeId: google.maps.MapTypeId.ROADMAP }; var map = new google.maps.Map(document.getElementById("map_canvas"), options); var businesscount = ( = @numberofbusinesses ) for (var i = 0; i &lt;= businesscount; i++) { var marker = new google.maps.Marker({ position: new google.maps.LatLng( = @businesses[i].latitude , = @businesses[i].longitude ), map: map, }); }; } %body{ :onload =&gt; "initialize()" } %div#map_canvas{:style =&gt; "width: 900px; height: 350px;"} </code></pre> <p>The problem is that "i" is not accepted when I try to loop through @businesses, the error message is</p> <p>undefined local variable or method `i' for #&lt;#:0xbd2d970></p> <p>How can i loop through @businesses to place all the markers on the map?</p> <p>Thanks for your help!</p>
 

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