[PHP] Save ability... Duplicate DB entries
i have this code snippet:
if(isset($_POST['save'])){
$query = 'INSERT INTO article_data VALUES (\'\', '.$_SESSION['uid'].',
'.time().', \''.$_POST['title'].'\', \''.$_POST['description'].'\',
'.$_POST['cat'].', \''.$_POST['text'].'\', 0)';
$result = mysql_query($query) or die(Query failed: $querybr .
mysql_error());
echo 'you saved your work.';
} elseif(isset($_POST['pub'])) {
$query = 'INSERT INTO article_data VALUES (\'\', '.$_SESSION['uid'].',
'.time().', \''.$_POST['title'].'\', \''.$_POST['description'].'\',
'.$_POST['cat'].', \''.nl2br($_POST['text']).'\', 0)';
echo 'you published your work.';
}
Which has a save or a publish option. I only want to keep one copy of each
article in the DB. This adds a new one each time. I know about updates in
SQL but the file may or may not already be in the db. Does anyone have a
good way to go about this?
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Re: [PHP] Save ability... Duplicate DB entries
JJ,
i have this code snippet:
if(isset($_POST['save'])){
$query = 'INSERT INTO article_data VALUES (\'\', '.$_SESSION['uid'].',
'.time().', \''.$_POST['title'].'\', \''.$_POST['description'].'\',
'.$_POST['cat'].', \''.$_POST['text'].'\', 0)';
$result = mysql_query($query) or die(Query failed: $querybr .
mysql_error());
echo 'you saved your work.';
} elseif(isset($_POST['pub'])) {
$query = 'INSERT INTO article_data VALUES (\'\', '.$_SESSION['uid'].',
'.time().', \''.$_POST['title'].'\', \''.$_POST['description'].'\',
'.$_POST['cat'].', \''.nl2br($_POST['text']).'\', 0)';
echo 'you published your work.';
}
Which has a save or a publish option. I only want to keep one copy of each
article in the DB. This adds a new one each time. I know about updates in
SQL but the file may or may not already be in the db. Does anyone have a
good way to go about this?
First perform a SELECT to establish previous existence (can lock row at this
point, if using suitable RDBMS), then decide to INSERT or UPDATE, save or
publish.
Regards,
=dn
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RE: [PHP] Save ability... Duplicate DB entries
Or, of course, a selection of fields as a unique key. The insert will fail
if there is an exisiting record with that key; you can interrogate the error
and report on the exisitence of a duplicate record.
The select/lock method is used for update purposes ('select for update' et
al.), not to keep duplicate records out of the DB.
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Re: [PHP] Save ability... Duplicate DB entries
Hi JJ: On Sun, Aug 11, 2002 at 01:44:53AM +1000, JJ Harrison wrote: Which has a save or a publish option. I only want to keep one copy of each article in the DB. This adds a new one each time. I know about updates in SQL but the file may or may not already be in the db. Does anyone have a good way to go about this? Here's a quick outline of what I do. I have a form for entering in articles. If the form is opened without an ArticleID, the ArticleID (a hidden form field) becomes 0. But, if the form is opened with an ArticleID, the given ArticleID is put in the hidden field. Now, when I make my changes and hit the Save (submit) button, the script checks the ArticleID. If it's 0, do an insert. If it's non-zero, do an update. --Dan -- PHP classes that make web design easier SQL Solution | Layout Solution | Form Solution sqlsolution.info | layoutsolution.info | formsolution.info T H E A N A L Y S I S A N D S O L U T I O N S C O M P A N Y 4015 7 Av #4AJ, Brooklyn NY v: 718-854-0335 f: 718-854-0409 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Save ability... Duplicate DB entries
I'll do that. When I load an article I supply the article's id. -- JJ Harrison [EMAIL PROTECTED] www.tececo.com -- Please reply on the list/newsgroup unless the reply it OT. Analysis Solutions [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi JJ: On Sun, Aug 11, 2002 at 01:44:53AM +1000, JJ Harrison wrote: Which has a save or a publish option. I only want to keep one copy of each article in the DB. This adds a new one each time. I know about updates in SQL but the file may or may not already be in the db. Does anyone have a good way to go about this? Here's a quick outline of what I do. I have a form for entering in articles. If the form is opened without an ArticleID, the ArticleID (a hidden form field) becomes 0. But, if the form is opened with an ArticleID, the given ArticleID is put in the hidden field. Now, when I make my changes and hit the Save (submit) button, the script checks the ArticleID. If it's 0, do an insert. If it's non-zero, do an update. --Dan -- PHP classes that make web design easier SQL Solution | Layout Solution | Form Solution sqlsolution.info | layoutsolution.info | formsolution.info T H E A N A L Y S I S A N D S O L U T I O N S C O M P A N Y 4015 7 Av #4AJ, Brooklyn NY v: 718-854-0335 f: 718-854-0409 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
