creating infowindows on the fly for numerous markers

I'm struggling to populate Google InfoWindows with dynamic content. My current approach involves loading 60 markers and attaching a click event handler to each one. Upon clicking a marker, I aim to retrieve the corresponding data from a fusion table based on a unique ID column. Each marker should display different data in its respective InfoWindow. Despite reading about closures, I'm having trouble applying this concept effectively to this problem - any suggestions would be appreciated.

var markers = new Array();
infoWindow = new google.maps.InfoWindow();

function getBeachLocations() {
    // construct query
    var queryURL = "https://www.googleapis.com/fusiontables/v1/query?sql=";
    var queryTail = "&key=apiKey=?";
    var query = "SELECT * FROM beachLocationTable"; // beach locations tbl
    var queryText = encodeURI(query);

    $.ajax({
        type: "GET",
        url: queryURL + queryText + queryTail,
        cache: false,
        dataType: 'jsonp',
        success: createMarkers,
        error: function () {
            alert("Sorry, no spatial data is available at this time, please check back on a later date.");
        }

    });
} //end getBeachLocations

function createMarkers(data) {
    // code for creating markers
}

function getEcoliData(beach_id) {
    // code for fetching E.coli data
}

function createDropDownMenu() {
    // code for creating dropdown menu
}

/* start map initialization */
function initialize() {
    // code for initializing the map
}

// invocation starts here
createDropDownMenu();
getBeachLocations();

Answer №1

If you're looking to combine your tables, utilizing FusionTables interface may be the most efficient solution.

In FusionTables, navigate to the menu option "File" and choose "Find a table to merge with".

Once completed, you should have a consolidated table housing data from all three sources that can easily be displayed in an info window with just one query.

I trust this information proves valuable to you.

Answer №2

Many thanks to everyone who contributed to the post. It turns out that the issue was quite simple - I was querying the wrong table, which resulted in incorrect results. Fortunately, I have now successfully updated the content in the infoWindow. The next step on my agenda is figuring out the best way to inform users through the infoWindow when arrays are empty, null, or undefined. Do you think the following approach would work? [code]

if (typeof rows == 'undefined' ) { rows_str = '

Apologies, but there is currently no ecoli data available for this beach.

' } else { //add column row data to string }

[/code]

As always, any suggestions or input is highly valued. Cheers, Michael

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