Form Input Fuction Is Modifing With Check Boxes And Select Menu

[thara]

Hello...everyone...

 

In my registration form I need to add some check boxes to select more than 1 option about teachers' class option. Larry's Effortless E-Commerce with PHP and MySQL book teach us how to use form input function for text, password and taxtarea inputs. So I modified the function for my check boxes. there I need to display a error message in my registration form when a user not select at least one option from the teacher option check boxes in my register page. further I need to display my error message above the check boxes as Larry did to textarea.

 

I tried like this in my form function... but I can't get my error message... can anybody tell me where I have gone wrong????

 

this code is my form function.

 

} elseif ($type == 'checkbox') {

 if ( $name == 'option[]' ) {
  // Display the error first:
  if (array_key_exists($name, $errors)) echo ' <span class="error">' . $errors[$name] . '</span>';
  // Start creating the textarea:
  echo '<input type="' . $type . '"  name="' . $name . '"  value="1"  class="checkbox" />  Individual<br />';
  echo '<input type="' . $type . '"  name="' . $name . '"  value="2"  class="checkbox" />  Small Groups  <small>( Below 10 )</small><br />';
  echo '<input type="' . $type . '"  name="' . $name . '"  value="3"  class="checkbox" />  Medium Groups  <small>( Between 10 to 20 )</small><br />';
  echo '<input type="' . $type . '"  name="' . $name . '"  value="4"  class="checkbox" />  Big Groups  <small>( Over 20 )</small><br />';
  echo '<input type="' . $type . '"  name="' . $name . '"  value="5"  class="checkbox" />  Online Tuition<br />';
 }
 if ( $name == 'medium[]' ) {
  // Display the error first:
  if (array_key_exists($name, $errors)) echo ' <span class="error">' . $errors[$name] . '</span>';
  // Start creating the textarea:
  echo '<input type="' . $type . '"  name="' . $name . '"  value="1"  class="checkbox" />  Hindi<br />';
  echo '<input type="' . $type . '"  name="' . $name . '"  value="2"  class="checkbox" />  English<br />';
  echo '<input type="' . $type . '"  name="' . $name . '"  value="3"  class="checkbox" />  Tamil<br />';
 }  
}// End of primary IF-ELSE.

 

 

These are my register.php page

 

// Check for Institute Options:
if(empty( $_POST['option'])) {
$reg_errors['option'] = 'Please select at least one tuition option';
} else {
 $option = $_POST['option'];
}
// Check for Institute medium:
if(empty( $_POST['medium'])) {
$reg_errors['medium'] = 'Please select at least one tuition medium';
} else {
 $medium = $_POST['medium'];
}

 

 

This is My HTML part in register page

 

   <div>
	<label for="option">Tutoring Option <img src="../images/required_star.png" alt="required" /> : </label>
	<div class="checkbox1">
	 <?php create_form_input('option[]', 'checkbox', $reg_errors);?>
	</div>
   </div>
   <div>
	<label for="option">Tutoring Medium <img src="../images/required_star.png" alt="required" /> : </label>
	<div class="checkbox1">
	 <?php create_form_input('medium[]', 'checkbox', $reg_errors);?>
	</div>
   </div>

 

 

any helps are greatly appreciated...

 

thank you..

[margaux]

Checkbox type is a different kind of input - you will need to loop thru the array of checkboxes and check if each one is 'checked'. If none are 'checked', then add to your error array. If I get time later, I'll try to put together some code.

[thara]

thanks for response.... but I am bit confusing with your answer. If u show me it through an example It will help me. further If u can, tell me what are the thing I have made mistake in my scripts....

 

Thank you.

[margaux]

Since more than one checkbox can be checked, I would give each one a unique name. You can use a for loop in your form function. In your validation, also use a for loop to check if each one isset (checking with empty won't work). I changed 'option' to 'group' as I found it more meaningful but you can use whatever name you want.

 

You can use the same code for 'medium' by just changing a few values.

 

add this to the html part of your register page

<div>
<label for="group">Tutoring Option : </label>
<div class="checkbox1">
<?php
for ($i=1, $count=5; $i <= $count; $i++) {
 create_form_input('group' . $i, 'checkbox', $reg_errors);
 }
?>
</div>

this is the validation - I added the error message to group[1] to position it above the list.

$group = array();
for ($i=1, $count=5; $i <= $count; $i++) {
if (isset($_POST['group'. $i])) {
	$group[] = $_POST['group'. $i];
}
} // end for loop
if (empty($group)){
$reg_errors['group1'] = 'Please select at least one tuition option';
}

add this code to your form function right after if ($type == 'checkbox'){

if (preg_match('/group\d{1}$/', $name)) {
 $i = substr($name, -1);
 $groupVal = array(1=>'Individual', 'Small Groups  <small>( Below 10 )</small>', 'Medium Groups  <small>( Between 10 to 20 )</small>', 'Big Groups  <small>( Over 20 )</small>', 'Online Tuition');
// Display the error first:
if (array_key_exists($name, $errors)) echo ' <span class="error">' . $errors[$name] . '</span>';
echo '<input type="' . $type . '"  name="' . $name . '"  value="' . $i . '"  class="checkbox" />  ' . $groupVal[$i] . '<br />';
}
 }

[thara]

Thank you margaux... It working properly as I expect. But this code is hard to understand....

 

if (preg_match('/group\d{1}$/', $name)) {
 $i = substr($name, -1);
 $groupVal = array(1=>'Individual', 'Small Groups &nbsp;<small>( Below 10 )</small>', 'Medium Groups &nbsp;<small>( Between 10 to 20 )</small>', 'Big Groups &nbsp;<small>( Over 20 )</small>', 'Online Tuition');
    // Display the error first:
    if (array_key_exists($name, $errors)) echo ' <span class="error">' . $errors[$name] . '</span>';
    echo '<input type="' . $type . '"  name="' . $name . '"  value="' . $i . '"  class="checkbox" />&nbsp; ' . $groupVal[$i] . '<br />';
    }
 }

 

 

can you explain how it works.... and If I use select box in a form how can I display error massege like that.... further A select box display in the page with database values..

 

any comments are highly appreciated....

 

thank you..

[margaux]

The first line uses a regular expression to see if $name matches the string 'group' plus one numeral.

The second gets that numeral by taking the last character from $name, starting from the end of the

string (a positive number would start from the beginning).

Then I create an array to use for the display text for each checkbox.

After checking for an error, I just echo it all out.

 

For select, you can use something similar

if ($type == 'select') {
		 if (preg_match('/group\d{1,}$/', $name)) {
			 $data = array(0 => 'Select One', 'Value1', 'Value2', 'Value3', 'Value4', 'Value5');
			 }


	echo '<select name="' . $name . '" id="' . $label . '"';
		if (array_key_exists($name, $errors)) echo 'class="error"';
		echo '>';

Use a foreach loop to loop through your select array.

		foreach ($data as $k => $v) {
		echo "<option value=\"$k\"";
		if ($value == $k) echo ' selected="selected"' ;
		echo ">$v</option>\n";	
		} // end foreach
	echo '</select>';
	}

 

To use d/b values,

$q = ("SELECT value1, value_id FROM table");
$r = mysqli_query($dbc, $q);
?>
	<select id="value_id" name="value_id">  
	<option value=''></option>  
 <?php
	while ($row = mysqli_fetch_array($r))
	{		
	echo "<option value=\"".$row['value_id']."\">".$row['value1']."</option>\n  ";
  }  
  ?> </select>