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POUpdate Database Form: leaves image fields blank when no file is selected
 

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  1. POUpdate Database Form: leaves image fields blank when no file is selected
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    <p>i'm creating a content management system so that the database can easily be updated. i've created an update page that lets the user edit entries in the database, and they can upload new images and edit any of the fields without any problems. the problem i have, is that if you just want to edit, say just the text in one field, but you don't want to change the images, when the form is submitted, it overwrites the image field with a blank entry. what i want to be able to do is for the original image to remain if no other file is selected. i know that i need to check if a file has been selected but i can't seem to find a way of doing it that works. i'm sure it's probably something simple, but here's the script i have for the upload:</p> <pre><code> $editFormAction = $_SERVER['PHP_SELF']; if (isset($_SERVER['QUERY_STRING'])) { /* upload image script */ $thumb=basename($_FILES['thumb']['name']); if(move_uploaded_file($_FILES['thumb']['tmp_name'],"../shopImages/".$thumb)) $image1=basename($_FILES['image_1']['name']); if(move_uploaded_file($_FILES['image_1']['tmp_name'],"../shopImages/".$image1)) $image2=basename($_FILES['image_2']['name']); if(move_uploaded_file($_FILES['image_2']['tmp_name'],"../shopImages/".$image2)) /*end of script*/ $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']); } if ((isset($_POST["MM_update"])) &amp;&amp; ($_POST["MM_update"] == "form1")) { $updateSQL = sprintf("UPDATE tbl_products SET thumb=%s, image_1=%s, image_2=%s, title=%s, `desc`=%s, category_id=%s, status=%s, shipping_band=%s, price=%s WHERE product_id=%s", GetSQLValueString($thumb, "text"), GetSQLValueString($image1, "text"), GetSQLValueString($image2, "text"), GetSQLValueString($_POST['title'], "text"), GetSQLValueString($_POST['desc'], "text"), GetSQLValueString($_POST['category_id'], "int"), GetSQLValueString($_POST['status'], "int"), GetSQLValueString($_POST['shipping_band'], "text"), GetSQLValueString($_POST['price'], "double"), GetSQLValueString($_POST['product_id'], "int")); </code></pre> <p>here is the code for the form:</p> <pre><code>&lt;form method="post" name="form1" action="&lt;?php echo $editFormAction; ?&gt;" enctype="multipart/form-data"&gt; &lt;table align="center"&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Product ID:&lt;/td&gt; &lt;td&gt; &lt;?php echo $row_RS_updateProducts['product_id']?&gt; &lt;/td&gt; &lt;tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Thumb:&lt;/td&gt; &lt;td&gt;&lt;?php echo $row_RS_updateProducts['thumb']?&gt;&lt;input type="file" name="thumb" value="&lt;?php echo $row_RS_updateProducts['thumb']?&gt;" size="32"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Image 1:&lt;/td&gt; &lt;td&gt;&lt;?php echo $row_RS_updateProducts['image_1']?&gt;&lt;input type="file" name="image_1" value="&lt;?php echo $row_RS_updateProducts['image_1']?&gt;" size="32"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Image 2:&lt;/td&gt; &lt;td&gt;&lt;?php echo $row_RS_updateProducts['image_2']?&gt;&lt;input type="file" name="image_2" value="&lt;?php echo $row_RS_updateProducts['image_2']?&gt;" size="32"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Title:&lt;/td&gt; &lt;td&gt;&lt;input type="text" name="title" value="&lt;?php echo htmlentities($row_RS_updateProducts['title'], ENT_COMPAT, 'UTF-8'); ?&gt;" size="32"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Description:&lt;/td&gt; &lt;td&gt;&lt;input type="text" name="desc" value="&lt;?php echo htmlentities($row_RS_updateProducts['desc'], ENT_COMPAT, 'UTF-8'); ?&gt;" size="32"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Category:&lt;/td&gt; &lt;td&gt;&lt;select name="category_id"&gt; &lt;?php do { ?&gt; &lt;option value="&lt;?php echo $row_RS_Category['category_id']?&gt;" &lt;?php if (!(strcmp($row_RS_Category['category_id'], htmlentities($row_RS_updateProducts['category_id'], ENT_COMPAT, 'UTF-8')))) {echo "SELECTED";} ?&gt;&gt;&lt;?php echo $row_RS_Category['category_name']?&gt;&lt;/option&gt; &lt;?php } while ($row_RS_Category = mysql_fetch_assoc($RS_Category)); ?&gt; &lt;/select&gt;&lt;/td&gt; &lt;tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Status:&lt;/td&gt; &lt;td&gt;&lt;select name="status"&gt; &lt;option value="1" &lt;?php if (!(strcmp(1, htmlentities($row_RS_updateProducts['status'], ENT_COMPAT, 'UTF-8')))) {echo "SELECTED";} ?&gt;&gt;Available&lt;/option&gt; &lt;option value="2" &lt;?php if (!(strcmp(2, htmlentities($row_RS_updateProducts['status'], ENT_COMPAT, 'UTF-8')))) {echo "SELECTED";} ?&gt;&gt;Pending&lt;/option&gt; &lt;option value="3" &lt;?php if (!(strcmp(3, htmlentities($row_RS_updateProducts['status'], ENT_COMPAT, 'UTF-8')))) {echo "SELECTED";} ?&gt;&gt;Unavailable&lt;/option&gt; &lt;/select&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Shipping Band:&lt;/td&gt; &lt;td&gt;&lt;select name="shipping_band"&gt; &lt;option value="a" &lt;?php if (!(strcmp("a", htmlentities($row_RS_updateProducts['shipping_band'], ENT_COMPAT, 'UTF-8')))) {echo "SELECTED";} ?&gt;&gt;A&lt;/option&gt; &lt;option value="b" &lt;?php if (!(strcmp("b", htmlentities($row_RS_updateProducts['shipping_band'], ENT_COMPAT, 'UTF-8')))) {echo "SELECTED";} ?&gt;&gt;B&lt;/option&gt; &lt;option value="c" &lt;?php if (!(strcmp("c", htmlentities($row_RS_updateProducts['shipping_band'], ENT_COMPAT, 'UTF-8')))) {echo "SELECTED";} ?&gt;&gt;C&lt;/option&gt; &lt;option value="d" &lt;?php if (!(strcmp("d", htmlentities($row_RS_updateProducts['shipping_band'], ENT_COMPAT, 'UTF-8')))) {echo "SELECTED";} ?&gt;&gt;D&lt;/option&gt; &lt;/select&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;Price:&lt;/td&gt; &lt;td&gt;&lt;input type="text" name="price" value="&lt;?php echo htmlentities($row_RS_updateProducts['price'], ENT_COMPAT, 'UTF-8'); ?&gt;" size="32"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr valign="baseline"&gt; &lt;td nowrap align="right"&gt;&amp;nbsp;&lt;/td&gt; &lt;td&gt;&lt;input type="submit" value="Update record"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;input type="hidden" name="MM_update" value="form1"&gt; &lt;input type="hidden" name="product_id" value="&lt;?php echo $row_RS_updateProducts['product_id']; ?&gt;"&gt; &lt;/form&gt; </code></pre> <p>i'm new to php so any help would be much appreciated as i've been stuck on this for days now.</p>
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    1. COcan anybody help me on this? i'm new to php and really stuck on it. i've tried all the suggestions in the comments but nothing seems to work.
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      1. POUpdate Database Form: leaves image fields blank when no file is selected
      1. USpaul
 

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