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PODon't insert null value to mysql db
 

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  1. PODon't insert null value to mysql db
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    <p>When I try input new value OR change value OR delete value(nothing) to products 1 or products 2</p> <p>I don't wanna insert NULL value into DB.</p> <p>products TABLE</p> <pre><code>+-------------+--------------+---------------+ | products_id | categories_id| products_name | +-------------+--------------+---------------+ | 1 | 1 | product 1 | | 2 | 1 | product 2 | +-------------+--------------+---------------+ </code></pre> <p>products_extra_fields TABLE</p> <pre><code>+--------------------------+---------------------------+ | products_extra_fields_id | products_extra_fields_name| +--------------------------+---------------------------+ | 1 | sugar | | 2 | cocoa | | 3 | butter | | 4 | milk | +--------------------------+---------------------------+ </code></pre> <p>products_to_products_extra_fields TABLE</p> <pre><code>+-------------+---------------------------+-----------------------------+ | products_id | products_extra_fields_id | products_extra_fields_value | +-------------+---------------------------+-----------------------------+ | 1 | 1 | 20% | | 1 | 2 | 45% | | 1 | 3 | 27% | | 2 | 1 | 12% | +-------------+---------------------------+-----------------------------+ </code></pre> <p>phpscript</p> <pre><code>&lt;?php require ('mysql/mysql_connect2.php'); // Connect to the database. if (isset ($_POST['submit'])) { $products_id = $_POST['products_id']; echo "products_id = ".$products_id; echo "&lt;br/&gt;&lt;br/&gt;"; for($i = 0; $i&lt;count($_POST['products_extra_fields_value']); $i++){ $products_extra_fields_id = $_POST['products_extra_fields_id'][$i]; $products_extra_fields_value = $_POST['products_extra_fields_value'][$i]; if($products_extra_fields_value != ''){ echo "products_extra_fields_id = ".$products_extra_fields_id; echo "&lt;br/&gt;"; echo "products_extra_fields_value = ".$products_extra_fields_value; echo "&lt;br/&gt;&lt;br/&gt;"; }else{ } $query = "INSERT into products_to_products_extra_fields set products_id = '$products_id', products_extra_fields_id = '$products_extra_fields_id', products_extra_fields_value = '$products_extra_fields_value' ON DUPLICATE KEY UPDATE products_extra_fields_value = '$products_extra_fields_value' "; $result = mysql_query ($query); // Execute the query. } if ($result) { header("refresh: 2; url='products.php?action=gopro_cat&amp;categories_id={$_POST['products_id']}'"); }else{ print "&lt;p&gt;Could update the entry because: &lt;b&gt;" . mysql_error() . "&lt;/b&gt;&lt;BR/&gt;&lt;BR/&gt;The query was: $query&lt;/p&gt;"; } mysql_close(); }else{ $products_id = $_GET['products_id']; $categories_id = $_GET['categories_id']; // Check for a valid entry ID in the URL. if (is_numeric ($products_id) ) { // Define the query. $query = "SELECT products_extra_fields.products_extra_fields_id, products_name, products_extra_fields_name, products_extra_fields_value FROM products, products_extra_fields LEFT JOIN products_to_products_extra_fields ON products_to_products_extra_fields.products_extra_fields_id = products_extra_fields.products_extra_fields_id AND products_to_products_extra_fields.products_id='$products_id' GROUP BY products_extra_fields.products_extra_fields_id"; if ($result = mysql_query ($query)) { $query2 = "SELECT products_name FROM products, categories WHERE products.products_id='$products_id' AND categories.categories_id = '$categories_id'"; if ($result2 = mysql_query ($query2)) { $row2 = mysql_fetch_array ($result2); $products_name = $row2['products_name']; ?&gt; &lt;form action='products_edit2.php' enctype='multipart/form-data' method='POST'&gt; &lt;table width="50%" border="0" cellpadding="2" cellspacing="2"&gt; &lt;tr&gt; &lt;td width="20%" align="right"&gt;PRODUCTS NAME:&lt;/td&gt; &lt;td&gt;&lt;input type="text" name="products_name" size="80" value="&lt;?php echo $products_name; ?&gt;" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php } /***** ***** *****/ while ($row = mysql_fetch_array ($result)) { $products_extra_fields_name = $row['products_extra_fields_name']; $products_extra_fields_value = $row['products_extra_fields_value']; $products_extra_fields_id = $row['products_extra_fields_id']; ?&gt; &lt;tr&gt; &lt;td width="20%" align="right"&gt; &lt;input type="text" name="products_extra_fields_id[]" size="5" value="&lt;?php echo $products_extra_fields_id; ?&gt;" /&gt; &lt;?php echo $products_extra_fields_id .'-'. $products_extra_fields_name; ?&gt;&lt;/td&gt; &lt;td&gt;&lt;input type="text" name="products_extra_fields_value[]" size="80" value="&lt;?php echo $products_extra_fields_value; ?&gt;" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php } /***** ***** END *****/ ?&gt; &lt;input type="ÔÅ×Ô" name="products_id" size="10" value="&lt;?php echo $products_id; ?&gt;" /&gt; &lt;tr&gt; &lt;td width="100%" colspan="2" align="right"&gt;&lt;input type="submit" name="submit" value="SAVE"/&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/form&gt; &lt;?php } else { // Couldn't get the information. print "&lt;p&gt;Could retrieve the entry because: &lt;b&gt;" . mysql_error() . "&lt;/b&gt;&lt;br/&gt;&lt;br/&gt;. The query was $query.&lt;/p&gt;"; } }else{ // No ID set. print '&lt;p&gt;&lt;b&gt;You must have made a mistake in using this page.&lt;/b&gt;&lt;/p&gt;'; } } ?&gt; </code></pre> <p>===========================================================================================</p> <pre><code>for($i = 0; $i&lt;count($_POST['products_extra_fields_value']); $i++){ $_POST['products_extra_fields_id'][$i]; $_POST['products_extra_fields_value'][$i]; if($_POST['products_extra_fields_value'][$i] != ''){ echo "products_extra_fields_id = ".$products_extra_fields_id = $_POST['products_extra_fields_id'][$i]; echo "&lt;br/&gt;"; echo "products_extra_fields_value = ".$products_extra_fields_value = $_POST['products_extra_fields_value'][$i]; echo "&lt;br/&gt;&lt;br/&gt;"; echo "if".$products_extra_fields_value; echo "&lt;br/&gt;&lt;br/&gt;"; }else{ echo "else".$products_extra_fields_value; echo "&lt;br/&gt;&lt;br/&gt;"; } } </code></pre> <p>With the above CODE you can only insert new value (or change). </p> <p>The problem is you can't delete any values if you want to.</p> <p>Is there any solution for this?</p>
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    1. PO
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    1. PTQuestion
    1. USAlwaysANovice
    1. USchris
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    1. This table or related slice is empty.
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    1. VO
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      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. COconfusing question :O
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      1. USSourav
    2. COOverly vague, and too localized
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      1. USRichardTheKiwi
    3. COIf you don't want to insert a `NULL`, then don't insert a `NULL`. This question is a bit like asking, "how do I _not_ decide to do my grocery shopping at 3pm today?" You just... don't.
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      1. PODon't insert null value to mysql db
      1. USLightness Races in Orbit
 

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