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How to get messages from a particular forum [message #30591]

Fri, 03 March 2006 14:13

acollins22

Messages: 11
Registered: June 2005
Location: Leicestershire, England

Karma: 0

Junior Member

Hi Folks,

I'd like to get the last 20 posts from one articular forum to display on a page.

Having read the various threads here I decided to go the FUDapi way. As there isn't a function to do exactl what I want I'd like to write on based on fud_fetch_recent_msg and that's where I come unglued.

fud_fetch_recent_msg reads as...

function fud_fetch_recent_msg($arg=1)
{
	$range = time() - 86400 * (float) $arg;
	return _fud_msg_multi(0, "SELECT id FROM ".$GLOBALS['DBHOST_TBL_PREFIX']."msg WHERE apr=1 AND post_stamp > ".$range);
}

so I figure I should change arg to be the forum number I want and change the WHERE clause to match the forum_id to $arg and that's the rub, I don't know what the row title is for the forum_id.

What I have is...

function fetch_forum_msg($arg=5)
{
	return _fud_msg_multi(0, "SELECT id FROM ".$GLOBALS['DBHOST_TBL_PREFIX']."msg WHERE apr=1 AND forum_id = ".$arg);
}

Am I on the right track? If so could you please point me at the correct clause syntax?

Thanks.

Andy.

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Re: How to get messages from a particular forum [message #30623 is a reply to message #30591]

Sun, 05 March 2006 16:55

Ilia

Messages: 13241
Registered: January 2002

Karma: 0

Senior Member
Administrator
Core Developer

Close but not quite, the message table does not have a forum_id column, the thread table does. So you need to join the two tables together by thread_id and then your query will work.

FUDforum Core Developer

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Re: How to get messages from a particular forum [message #30638 is a reply to message #30591]

Mon, 06 March 2006 16:01

acollins22

Messages: 11
Registered: June 2005
Location: Leicestershire, England

Karma: 0

Junior Member

Hi Ilia,

Thanks for the reply. I've been having a look at this but I'm a bit of a newbie here.

As a QnD hack I've tried this code in my SQL console.

SELECT fud26_msg.id as id
	FROM fud26_thread, fud26_msg
	WHERE fud26_msg.id = fud26_thread.id AND fud26_msg.apr = 1 AND fud26_thread.forum_id = 2
	ORDER BY id DESC

That works fine but if I put that code into my version of fetch_forum_msg it's no-go.

function fetch_forum_msg($arg=5)
{
$range = time() - 86400 * (float) $arg;

return _fud_msg_multi(0, "SELECT fud26_msg.id as id
	FROM fud26_thread, fud26_msg
	WHERE fud26_msg.id = fud26_thread.id AND fud26_msg.apr = 1 AND fud26_thread.forum_id = 2
	ORDER BY id DESC");
}

(I know this is a hack but I'm just trying to prove a point at first.)

If I look at _fud_msg_multi it's already doing a join, can I use that.

Sorry to be a bit vague here but I'm really out of my depth (though I'm learning fast). Please could you be more specific for me?

Thanks.

Andy.

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Re: How to get messages from a particular forum [message #30642 is a reply to message #30638]

Mon, 06 March 2006 18:14

Ilia

Messages: 13241
Registered: January 2002

Karma: 0

Senior Member
Administrator
Core Developer

In the ORDER BY id DESC you need to identify the name of the table you are referencing the id field from.

FUDforum Core Developer

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