当我有动态表格时，能够在“按钮单击”上更新一行

Question

I require some help with updating a row in table when I've pressed a button. At the moment I have a dynamic table, which fetches data from the database and posts it as a table. What I really want to do now, is to be able to UPDATE a row on button click. Here is my code.

My database (table name: assignment):

| ID | CustomerID | Name | Address | Technician |

My PHP:

<?php 
if(isset($_POST['customerButton'])){
    $ID = $row_Assignment['ID']; <--- //Not sure which ID to fetch, so it'll be unique for each customer  
    $user = $row_Users['username']; <--- // Name of the logged in user.

    mysql_query("UPDATE assignment SET technician = '$user' WHERE ID='$ID'"); <--- //Not sure what to put after 'WHERE'. 
}

?>

Here's a snippet of the dynamic table

<td><?php echo $row_Assignment['address']; ?></td>
<td>
<?php echo $row_Assignment['technician']; ?>

<form action="" method="post"> 

    <input type="submit" name="customerButton" id="customerButton" value="Add">

</form>
</td>

Thanks!

Answer 1

So you want to update a table full of inputs? I mean you download the table then excel like modify it and save it back.

Make your table to be full of inputs inside the tds, except for the id which should be in a hidden input then you will use an array to send this information when you post meaning for example

  <td><input name='name[]'></td><td><input name='comments[]'></td>...etc 

this way when you post

   $_POST['name']=// a list of the values then you just have to update each row  so...

update with a foreach in your php

   foreach($_POST['name'] as $key=>$value){
      $ID = $_POST['id'][$key]; 
         $name = value;
         $comments = $_POST['comments'][$key];

          mysql_query("UPDATE assignment SET technician = '$name',comments='$comments' WHERE ID='$ID'");

   }

This approach will update the whole table

Answer 2

Just set a hidden value of ID in your html like so

<td>
<?php echo $row_Assignment['technician']; ?>

<form action="" method="post"> 
    <input type="hidden" name="assignment_id" value="".$row_Assignment['ID']."">
    <input type="submit" name="customerButton" id="customerButton" value="Add">

</form>
</td>

Then on your php code for updating you could easily identify which row was submitted by getting the id as such

$ID = $_POST['assignment_id'];

Then you can use that $ID in the where condition of the update and set whatever value you need to set for the columns you need to update.