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Displaying Categories & sub categories

Thread began 10/22/2015 9:52 pm by stephen287384 | Last modified 10/22/2015 11:10 pm by Ray Borduin | 585 views | 6 replies |

stephen287384

Displaying Categories & sub categories

I need to display a menu showing categories and associated sub categories, here is the scenario:

Here is the Database Schema

categories (Table)

CategoryID
Category Name


sub_categories (Table)

SubCategoryID
SubCategoryName
SubCategoryCategoryID


Here are the Recordsets:

<?php
$rsCategories = new WA_MySQLi_RS("rsCategories",$DatabaseConn,0);
$rsCategories >setQuery("SELECT * FROM categories ORDER BY CategoryName ASC");
$rsCategories >execute();
?>
<?php
$rsSubCategories = new WA_MySQLi_RS("rsSubCategories",$DatabaseConn,0);
$rsSubCategories >setQuery("SELECT * FROM sub_categories ORDER BY SubCategoryName ASC");
$rsSubCategories >execute();
?>




And here is the menu structure:



<label>Filter by Category / Sub Category</label>

<?php
while(!$rsCategories->atEnd()) {
?>
<input name="category" type="checkbox" value="<?php echo($rsCategories->getColumnVal("CategoryID")); ?>" />
&nbsp;&nbsp;<label for="category"> <?php echo($rsCategories->getColumnVal("CategoryName")); ?></label>
<br>

<!--show if -->

<?php if (($rsSubCategories->getColumnVal("SubcategoryCategoryID") == ($rsCategories->getColumnVal("CategoryID")))) { // Show if sub category exists ?>

<?php
while(!$rsSubCategories->atEnd()) {
?> <div id="subcategory"> <input name="subcategory" type="checkbox" value="<?php echo($rsSubCategories->getColumnVal("SubCategoryID")); ?>" />
&nbsp;&nbsp;<label for="subcategory"> <?php echo($rsSubcategories->getColumnVal("SubCategoryName")); ?></label></div>
<?php
$rsSubCategories->moveNext();
}
$rsSubcategories->moveFirst(); //return RS to first record
?>

<?php } // Show if sub category exists ?>

<!--end show if -->

<?php
$rsCategories->moveNext();
}
$rsCategories->moveFirst(); //return RS to first record
?>


The following displays ALL the sub Categories immediately below the first Category. How can I split them up so the sub categories are associated with the Categories?

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Ray BorduinWebAssist

You have to add a parameter to the subcategory recordset to filter it from the value from the first so that it only shows the children. Then you have to manually copy and paste the recordset code so that the second recordset is defined inside the repeated region for the first one.

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stephen287384

something like this:

<?php
$rsSubCategories = new WA_MySQLi_RS("rsSubCategories",$DatabaseConn,0);
$rsSubCategories >setQuery("SELECT * FROM sub_categories WHERE SubCategoryID = ? ORDER BY SubCategoryName ASC");
$rsSubCategories->bindParam("i", "".($rsCategories->getColumnVal("CategoryID")) ."", "-1"); //paramCategoryID
$rsSubCategories >execute();
?>

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Ray BorduinWebAssist

Yes, if the SubCategoryID matches the CategoryID from the parent category table.

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stephen287384

So remove the if
<!--show if -->

<?php if (($rsSubCategories->getColumnVal("SubcategoryCategoryID") == ($rsCategories->getColumnVal("CategoryID")))) { // Show if sub category exists ?>

<?php } // Show if sub category exists ?>

<!--end show if -->

and paste it there?

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Ray BorduinWebAssist

You can leave that... just paste it right above it.

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stephen287384

Ray you're the best! I owe you a beer.

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