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I'm just learning this database stuff and so I am a bit confused and was hoping someone could push me in the right direction. I have managed to create users in the wp_tables I have created in my database.

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Here are my specific questions.

  1. What I am wondering is how do I link the hm_tables with data from the wp_tables. Wouldn't I need to insert a foreign key (i.e email address from wp_users) into the hm_tables. Because, otherwise I won't know which hm_account is linked to which wp_user? Is this dumb? And if so, HOW?

  2. Also, I have become familiar with using WPDB commands, but when playing around with the hm_tables can I use $wpdb or do I need to use straight SQL commands.

Can you please give explicit instructions or examples as I get very lost at this early stage. I have read around but can't seem to find something that explains this at a level I can understand (which at this stage is quite low).

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  • Are you using phpMyAdmin? And can I ask why are you using a different table prefix? (hm_ instead of wp_ that you apparently already have?) You do need to change your table prefix in your wp-config.php file.
    – kelly johnson
    Commented Apr 29, 2014 at 4:16
  • I have actually managed to figure out the problem. Apparently wdpb does work with the hm_database files but I agree I should just change them. I guess my thinking was that if anyone looked at the plugin they would see what we had added.
    – Danrex
    Commented Apr 29, 2014 at 4:20
  • 99 times out of 100, creating your own tables is unnecessary. I suggest looking into custom post types + meta data to store your plugin data. you get a whole bunch of functionality for free that you will otherwise have to code yourself when using your own tables.
    – Milo
    Commented Apr 29, 2014 at 16:09

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I would suggest to use double prefix like wp_hm_account, since it will allow you to recognize the tables (as you mentioned in comment) and you will be also able to use wpdb class properly.

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