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I have followed the following Google developer doc about creating a store locator usng PHP & MySql.

https://developers.google.com/maps/articles/phpsqlsearch_v3

I have this working but now I would like to integrate this with an existing Wordpress installation.

My problem with integrating this, is the way WP stores repeatable custom fields. I have a repeatable field to enter multiple markers per custom post type. WP stores this as serialised data within the DB.

I cannot see a way of using the Haversine formula select statement mentioned in the doc to perform the radius search based on an entered postcode. I know there are various Google Map plugins out there, but I can't find any that will:

  • Add multiple markers per custom post
  • Provide a search to list markers within a radius of an entered postcode

Has anyone got any suggestions how I can do this, or does these features exist?

Thanks in advance for any help on this.

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I implemented a similar custom store locator for a client, and what I ended up doing was saving each lat / lon pair as post meta for a single location post type, and then assigning each location post type to a parent store post type. that way, a single store could have multiple unique locations. location posts were hidden in admin and managed via a custom meta box within the store post type.

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  • Ok this sounds like an ideal solution. How do I go about assigning a location to a parent and also I cant see away to manage these within a different post type? Any tutorials or help on this? Thanks
    – Rob Fyffe
    Nov 12, 2012 at 10:02
  • @Robert the posts table has a post_parent field you can use to store the ID on save_post. there is no UI for managing a post type within another, I had to create it using add_meta_box, a bit of javascript to manage fields, and the API to insert / update location posts.
    – Milo
    Nov 12, 2012 at 16:01
  • Ok thats great I will give this a shot and let you know how I get on.
    – Rob Fyffe
    Nov 12, 2012 at 16:29

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