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11/05/2009 at 04:03PM PST, ID: 24876616
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7.6

update records using linking table

Asked by yamya in MySQL Server, PHP and Databases

Tags: php mysql

:
In my db are three tables:
products, properties and productPropertyLink

the Link table manages the <strong>many to many relationships</strong>.

the key fields are:
products.productsUID
properties.productUID
productPropertyLink.productUID
productPropertyLink.propertyUID

the workflow is:
select productUID on page 1
pass as $breadcrumb1 to page 2
query WHERE productsUID =$breadcrumb1
set $var for form fields
echo $var into form fields
pass name="name" to page 3
set $var=$_POST['name'];
update  properties record
update products record
insert propertyLink record

THe goal is to update the existing property and product records, and to insert a new link record.

First: this query accurately populates the form fields, and displays as many forms as are needed to match all the records to the $_POST['$var']:

$query="SELECT products.productsUID, products.productName, products.productSKU, products.agrossi_LabID, products.ProdNextStep, products.yourName, properties.propertiesUID, properties.length, properties.width, properties.diameter, properties.cureTime, properties.viscosity, properties.handleTime, properties.fixtureTime, properties.gapFill, properties.batchNumber, properties.batchNotes, properties.tempC, properties.tempF, properties.tensile, properties.shear, properties.peel
FROM products, properties
WHERE products.productsUID = '$breadcrumb1'";

No update or insert query works correctly.

When the update to properties takes place, all the property record with a matching productsUID get updated.
SO far I either get all records with the same duplicated data, or nothing at all.
the 'nothing at all' code is attached for your review and comment. this includes all the code i've tried along the way commented out for troubleshooting.

thanks for the help.

amy 
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<?php
//this page collects the POST variables from projectDataColl.php as $var for INSERT nad UPDATE  queries
$breadcrumb1=$_POST['breadcrumb1'];
$productName=$_POST['productName'];
$productSKU=$_POST['productSKU'];
$cureTime=$_POST['cureTime'];
$viscosity=$_POST['viscosity'];
$handleTime=$_POST['handleTime'];
$fixtureTime=$_POST['fixtureTime'];
$gapFill=$_POST['gapFill'];
$tempC=$_POST['tempC'];
$tempF=$_POST['tempF'];
$tensile=$_POST['tensile'];
$shear=$_POST['shear'];
$peel=$_POST['peel'];
$adhType=$_POST['adhType'];
$gradeClass=$_POST['gradeClass'];
$appDescrip=$_POST['appDescrip'];
$batchNumber=$_POST['batchNumber'];
$batchNotes=$_POST['batchNotes'];
$length=$_POST['length'];
$width=$_POST['width'];
$diameter=$_POST['diameter'];
$prodNextStep=$_POST['prodNextStep'];
$propertiesUID=$_POST['propertiesUID']; 
//clean up any carriage returns etc from text areas 
$var = preg_replace("/[\n\r]*/","",$var);
$ISR_notes = preg_replace("/[\n\r]*/","",$ISR_notes); 
 
//Connecting to MYSQL
MySQL_connect("$host","$login_name","$password"); 
//Select the database we want to use
mysql_select_db("ps2009") or die("Could not select database"); 
mysql_query("UPDATE properties
SET length='$length', width='$width', diameter='$diameter', cureTime='$cureTime', viscosity='$viscosity', handleTime='$handleTime', fixtureTime='$fixtureTime', gapFill='$gapFill', batchNumber='$batchNumber', batchNotes='$batchNotes'
WHERE productUID='$breadcrumb1' AND batchNumber='$batchNumber'"); 
/*mysql_query("UPDATE productPropertyLink
SET propertiesUID='$propertiesUID'
WHERE productUID='$breadcrumb1'");
*/
mysql_query("UPDATE products
SET ProdNextStep='$prodNextStep'
WHERE productsUID='$breadcrumb1'"); 
/*mysql_query("INSERT INTO properties (propertiesUID,batchNumber, batchNotes,length,width,diameter,cureTime,viscosity,handleTime,fixtureTime,gapFill,tempC,tempF,tensile,shear,peel)
    VALUES(NULL, '$batchNumber', '$batchNotes', '$length','$width','$diameter','$cureTime','$viscosity','$handleTime','$fixtureTime','$gapFill','$tempC','$tempF','$tensile','$shear','$peel')");       # generate ID by inserting NULL
*/ 
	
/*mysql_query("UPDATE productPropertyLink 
 SET propertiesUID=LAST_INSERT_ID() WHERE productsUID='$breadcrumb1'");  
*/
mysql_query("INSERT INTO productPropertyLink (productPropLinkUID, productsUID, propertiesUID)
 VALUES(NULL, '$breadcrumb1', LAST_INSERT_ID())");  # use ID in second table 
printf("Product-property Linking record has been created, with an id %d\n", mysql_insert_id());
/*
mysql_query(" UPDATE products 
SET  productName='$productName', productSKU='$productSKU' WHERE productsUID='$breadcrumb1'");
*/
echo "<BR />Record ID $breadcrumb1 <-- Updated<BR /><BR />"; 
 

?>
[+][-]11/05/09 06:56 PM, ID: 25756277

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About this solution

Zones: MySQL Server, PHP and Databases
Tags: php mysql
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Solution Provided By: yauhing
Participating Experts: 1
Solution Grade: B
 
 
[+][-]11/05/09 10:49 PM, ID: 25757118

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[+][-]11/06/09 06:46 AM, ID: 25759494

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