[Plugin: Geo Mashup] Add/remove pins based upon drop down options

This will take some development for sure, but the guide you’re tinkering with is the right idea. You’d add your custom field data as it’s done there, then build your own interface using that data in the custom javascript part. That way you can just ignore categories altogether.

The javascript API is unfortunately still pretty obscure and subject to change. The resources available now are in an issue on the topic and the geo-mashup.js code itself. If you’re game to help me improve this situation, chime in on that issue and I’ll give you some more ideas. I use the API a lot and it is improving, but I need help with testing, use cases, documentation, and such.

cheers,
-dylan-

Thanks for your reply. I’d love to help, but I am just a tinkerer, no coding skills…if I manage to pull out something decent I will let you know. Thanks for your plugin!

Hi!
I found your suggestion on issue 250

<?php
$categories = get_the_category();
$cat_ids = array();
foreach( $categories as $category ) {
  $cat_ids[] = $category->cat_ID;
}
$map_args = 'map_content=global&open_post_id=' . get_the_ID() .
  '&marker_select_center=true&marker_select_highlight=true' .
  '&marker_select_highlight=true&marker_select_attachments=true' .
  '&map_cat=' . implode(',', $cat_ids);
echo GeoMashup::map( $map_args );
?>

Do you think it could work with custom fields?

<?php
$customfield = get_post_meta($post_id, 'my_key', 'false');

$map_args = 'map_content=global&open_post_id=' . get_the_ID() .
  '&marker_select_center=true&marker_select_highlight=true' .
  '&marker_select_highlight=true&marker_select_attachments=true';
echo GeoMashup::map( $map_args );
?>

If this worked I could use a post method to pass the variables I need and after submitting geo mashup would show the map with the parameters selected.
What do you think? Thanks!

That example makes a map of posts in the same categories as the current post. So do you want to make a map of posts with the same custom fields as the current post? That doesn’t sound like what you want.

Mmmhh nope, you are right, I wanted to know if using a function of the likes (similar to the one I wrote) I can pull out all the post IDs with a specific meta key and value (or two, or three…) and feed them to geo-mashup to create a global map.

This technique should work for that:

https://snipplr.com/view/37962/geo-mashup-post-query-contextual-map/

Hello!
Thanks a lot! I did not know contextual maps supported queries! I plan on having more than 100 posts, so I hope the error mentioned in the page you sent me gets resolved in the future!
I will let you know if it works. Thanks again!

Hi,
Unfortunately only a few queries work correctly.

I am using the code in the loop and calling a specific key as such

<?php query_posts( 'meta_key=type' ); ?>
<?php echo GeoMashup::map( 'map_content=contextual' ); ?>
<?php wp_reset_query(); ?>

What happens is the map centers as if it had no values (to 0,0 coord and zooms all the way in)

The same happens if I use both key and value or only a value. With one tag it works fine, but I have not tested multiple tags. I am not really interested in tags personally.

I did test categories, which partially work since I can only get to show 10 markers on the map no matter how many categories I call.

<?php query_posts( 'cat=16,4,29,7,8,9,13,12,20,19,11,15,17,26,27,28,10,21,5,6,3,18,14' ); ?>
<?php echo GeoMashup::map( 'map_content=contextual' ); ?>
<?php wp_reset_query(); ?>

So yes this would solve the initial question if it worked properly with queries. Any idea what it could be? Thanks

You may want to try a listing your query results to make sure they are right:

<?php query_posts( 'meta_key=type' ); ?>
Results:<ol>
<?php while( have_posts() ) : the_post(); ?>
<li><?php the_title(); ?></li>
<?php endwhile; ?>
</ol>
<?php wp_reset_query(); ?>

With the categories, you probably need to set posts_per_page to -1 to get more than 10.

Right on both. Get all posts with -1 for cat and get no posts with the query list (I tried it in and outside the loop)
This leaves me thinking I might have a problem with my WP installation? I do not understand why those queries are not executed.
BTW, I inserted the custom fields with the more fields plugin. Could that make a difference?

Hi,
I am using this query, which works well to output a list of posts anywhere lse on my site. But when I insert the geo-mashup code it outputs a number of blank maps equal to the number of posts that fulfill the query parameters.

<?php

 $querystr = "
SELECT $wpdb->posts.* FROM $wpdb->posts
LEFT JOIN $wpdb->postmeta ON($wpdb->posts.ID = $wpdb->postmeta.post_id)
WHERE $wpdb->posts.post_status = 'publish'
AND $wpdb->posts.post_type = 'post'
AND $wpdb->postmeta.meta_value = 'LI'
ORDER BY $wpdb->posts.post_modified DESC
";

 $pageposts = $wpdb->get_results($querystr, OBJECT);

?>
 <?php if ($pageposts): ?>
  <?php foreach ($pageposts as $post): ?>
   <?php setup_postdata($post); ?>

<?php echo GeoMashup::map( 'map_content=contextual&height=400&width=700&remove_geo_mashup_logo=true&cluster_max_zoom=11&zoom=8' ); ?>
<?php echo GeoMashup::category_legend() ?>

  <?php endforeach; ?>
 <?php endif; ?>

Guess geo mashup does not work with this kind of queries? What function should I call to use geo mashup filters? (hope what I am saying makes sense)

Also I have to correct one earlier statement. Adding the posts_per_page=-1 parameter to the query increases the number of posts but still does not outputs them all. Right now it is short of 6. I checked one of the missing ones and there seems to be no issue with it, as even the single map displays correctly. The data is stored and everything should work, but the post does not appear.
The global map shows everything fine.

Are you saying the posts appear when you loop through them, but don’t appear on a contextual map? It might be a good check to include coordinates in the list:

<?php query_posts( 'meta_key=type' ); ?>
Results:<ol>
<?php while( have_posts() ) : the_post(); ?>
<li><?php the_title(); ?>
<?php echo GeoMashup::location_info('fields=lat,lng'); ?></li>
<?php endwhile; ?>
</ol>
<?php wp_reset_query(); ?>

Hi thanks Dylan,
Not working. It only outputs “Results:” with nothing at all below

Also, about not all the properties showing up. It has to do with clustering. After removing clustering and cleaning the cache of the browser several times I got all the posts to show up. But I am not sure what returning users will see if they do not clean the cache of their browsers. Plus when I resume clustering the issue returns showing all posts but one on a certain zoom level and it is short of three if I zoom one level out, short of two at another zoom level, and so on. Is there any issue like this open?

No, this is the first I’ve heard of incorrect clustering. I don’t know what’s going on – I can’t seem to reproduce any of this behavior. There’s not much I can do without being able to see the behavior except make guesses.