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POName database child in Firebase?
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  1. POName database child in Firebase?
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    copied!<p><img src="https://i.stack.imgur.com/ApKd5.png" alt="enter image description here"></p> <p>This is the code I have.</p> <pre><code>function saveTrip() { routeData.clear(); for (var i = 0; i &lt; dirDisplay.directions.routes[0].legs.length; i++) { for (var j = 0; j &lt; dirDisplay.directions.routes[0].legs[i].steps.length; j++) { routeData.push(dirDisplay.directions.routes[0].legs[i].steps[j].path); } } routeLinesRef.push(routeData, function(error){ if (error) { $('#savedSpan').html('Data could not be saved.' + error); } else { $('#savedSpan').html('Data saved successfully!'); } }); } Array.prototype.clear = function() { this.splice(0, this.length); }; routeLinesRef.limit(10).on('child_added', function(snapshot) { // loop over each route we get from firebase route = snapshot.val(); </code></pre> <p>What function should be written to write into the hierarchy as shown in the image?</p> <pre><code>id = snapshot.name(); // make an array that is initially blank // It will contain all the latitude and longitudes of each point on in the route var routeCoordinates = []; // This loops over each point on the route for (var i=0; i&lt;route.length; i++) { for (var j in route[i]) { if (j==0 &amp;&amp; i&gt;0) { continue } else { </code></pre> <p>This part just takes each point on the route, and converts it into a google maps LatLng object. For example, if the data is [58.23, 18.8], it will do: new google.maps.LatLng(58.23, 18.8) to it, which turns it into a format that google maps likes.</p> <pre><code>if (route[i][j].lb &amp;&amp; route[i][j].mb) { routeCoordinates.push(new google.maps.LatLng (route[i][j].lb, route[i][j].mb)); //console.log(j + ' ' + snapshot.val()[route][i][j].lb, snapshot.val()[route][i][j].mb); } } } } </code></pre> <p>What should I do? I can't find any tutorial or anything.</p>
 

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