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POHow to implement a friendship system in my database?
 

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  1. POHow to implement a friendship system in my database?
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    <p>I have a user system in my database and I want to adding the posibility of add friends. The user have to be able to: </p> <ul> <li>Send a message in the petition </li> <li>Block user </li> <li>Set alias to friend user.</li> </ul> <p>So I though this table:</p> <pre><code>id_friend id_user1 id_user2 id_user_sender alias_user1 NULL alias user2 NULL status message NULL date_sent date_accepted NULL </code></pre> <p>I'm going to explain each colum:</p> <ul> <li><strong>id_friend</strong>: PK of the table.</li> <li><strong>id_user1</strong>: FK of users table</li> <li><strong>id_user2</strong>: FK of users table</li> <li><strong>id_user_sender</strong>: the id_user of who send the petition</li> <li><strong>alias_user1</strong> NULL: the alias seted by id_user1 to id_user2 (optional)</li> <li><strong>alias user2</strong> NULL: the alias seted by id_user2 to id_user1 (optional)</li> <li><strong>status</strong> : if 0 friendship pendient. if 1 friends. if 2 friendship bloqued.</li> <li><strong>message</strong> NULL: if status = 0 then can contain a message seted by the sender</li> <li><strong>date_sent</strong>: date when sender sent the petition</li> <li><strong>date_accepted</strong> NULL: date when user_requested acepted the friendship.</li> </ul> <p>Then to get all the friends of a specific user I'll do:</p> <pre><code>select id_user1, id_user2 from friends where id_user1 = $my_user_id or id_user2 = $my_user_id and status = 1; </code></pre> <p>Then I'd discard the id_users equal to mine, so the result contains only the user who are my friends. But to get the alias I don't have any idea. May be with more tables?</p> <p>I think I'm designing it wrong... Do you have any tip or advice? could you give some example please?</p> <p>If you need more info let me know and I'll edit the post.</p>
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    1. COWhat's the difference between `alias_user1` and `alias_user2`?
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      1. USManolo
    2. COThanks! Sorry, I've edited. Check it out! :) However, I thing I'd need more tables, at least to the user alias.
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    3. COWhat do you want to do with the alias? Show it? Or search with it?
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