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POFiltering WordPress posts by closest locations
 

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  1. POFiltering WordPress posts by closest locations
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    <p>I have WordPress posts that are displayed on a Google Map. The posts pull from a custom post field that includes the latlng value. The lat and lng are together in this value.</p> <p>The map also shows the users location with Googles GeoLocation. </p> <p>Could someone point me in the right direction to filter the posts by the 100 closest posts to the users location?</p> <p>I am filtering in other instances by query_posts meta key and thought it might work in this case too. </p> <p><strong>--UPDATE--</strong></p> <p>I am storing the lat and long values in two separate fields now. I can filter this just fine if I set predetermined values of the users lat/long like this...</p> <pre><code> $lat_plus = '40.496755'; $lat_minus = '35.496755'; $long_plus = '-85.051597'; $long_minus = '-89.3874682'; $the_query = new WP_Query(array( 'cat' =&gt; $custom_category, 'posts_per_page' =&gt; 50, 'order' =&gt; 'ASC', 'meta_query' =&gt; array( 'relation' =&gt; 'AND', array( 'key' =&gt; 'latitude', 'value' =&gt; $lat_plus, 'compare' =&gt; '&lt;', 'type' =&gt; 'NUMERIC' ), array( 'key' =&gt; 'latitude', 'value' =&gt; $lat_minus, 'compare' =&gt; '&gt;', 'type' =&gt; 'NUMERIC' ), array( 'key' =&gt; 'longitude', 'value' =&gt; $long_plus, 'compare' =&gt; '&lt;', 'type' =&gt; 'NUMERIC' ), array( 'key' =&gt; 'longitude', 'value' =&gt; $long_minus, 'compare' =&gt; '&gt;', 'type' =&gt; 'NUMERIC' ) </code></pre> <p>I am wanting to set these values based off the users current location. I am able to get these values and add and subtract by a number to create a square around the users current location with this code. </p> <pre><code> &lt;SCRIPT type="text/javascript"&gt; $(function() { if(navigator.geolocation) { var fallback = setTimeout(function() { fail('10 seconds expired'); }, 10000); navigator.geolocation.getCurrentPosition( function (pos) { clearTimeout(fallback); console.log('pos', pos); var point = new google.maps.LatLng(pos.coords.latitude, pos.coords.longitude); new google.maps.Geocoder().geocode({'latLng': point}, function (res, status) { if(status == google.maps.GeocoderStatus.OK &amp;&amp; typeof res[0] !== 'undefined') { var change = '2.5'; var lat1 = pos.coords.latitude; var lat2 = parseFloat(lat1,10) + parseFloat(change,10); if(lat2) { $("._lat_more").html(lat2); } else fail('Failed to parse'); var lat3 = parseFloat(lat1,10) - parseFloat(change,10); if(lat3) { $("._lat_minus").html(lat3); } else fail('Failed to parse'); var long1 = pos.coords.longitude; var long2 = parseFloat(long1,10) + parseFloat(change,10); if(long2) { $("._long_more").html(long2); } else fail('Failed to parse'); var long3 = parseFloat(long1,10) - parseFloat(change,10); if(long3) { $("._long_minus").html(long3); } else fail('Failed to parse'); var zip = res[0].formatted_address.match(/,\s\w{2}\s(\d{5})/); } else { fail('Failed to reverse'); } }); }, function(err) { fail(err.message); } ); } else { $("._res").html('Geolocation unsupported!'); } function fail(err) { console.log('err', err); $("._res").html('Error ' + err); } }); &lt;/SCRIPT&gt; &lt;?php $lat_plus = '&lt;div class="_lat_more"&gt;&lt;/div&gt;'; $lat_minus = '&lt;div class="_lat_minus"&gt;&lt;/div&gt;'; $long_plus = '&lt;div class="_long_more"&gt;&lt;/div&gt;'; $long_minus = '&lt;div class="_long_minus"&gt;&lt;/div&gt; echo $lat_plus echo $lat_minus echo $long_plus echo $long_minus ?&gt; </code></pre> <p>The problem is trying to bring the JavaScript created values into the WordPress meta_query. I'm guessing that since my variables are basically creating a div that WordPress can't read the value of the div as a meta value. </p> <p>Could someone help point me in the right direction?</p>
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    1. COSo you have the lat/lng for each post stored as a comma separated string, and you have the users lat/lng from Google? It would be easier to do the mysql search if they were separate values. Here is a [related question](http://stackoverflow.com/questions/4687312/querying-within-longitude-and-latitude-in-mysql/4690450#4690450).
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