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Adding conditional statements

TOPIC: Adding conditional statements

Adding conditional statements 06 Jun 2012 04:22 #2485

  • geoffr
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This is no doubt a no-brainer for many here, but because I am not entirely familiar with Joomla coding, I hope you don't mind me asking...

I'm building a template override for a flysheet (so I don't lose it each time I update the component). This is OK, however, I have a field that I don't want to display in some results. Here is the code that displays the value of a field...

<?php echo JDom::_('html.fly', array(
'dataKey' => 'media_caption',
'dataObject' => $this->questionsitem
));
?>

To precede this with a conditional, I have tried the following, but it errors. Hopefully you can see waht I am trying to do.... Are you able to advise how to write this?

<?php if ( empty( JDom::_('html.fly', array('dataKey' => 'media_caption','dataObject' => $this->questionsitem))) ) { ?>

.... blah blah...

<?php } ?>


Thanks!
Geoff
Last Edit: 06 Jun 2012 04:25 by geoffr.
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Re: Adding conditional statements 06 Jun 2012 05:09 #2486

  • edwardcox
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Hey Geoff,

(No, I am not the only person active on this forum LOL, it's just that I'm here quite a lot.)

I see you're making excellent progress on understanding Cook Self Service with Joomla!.

Now, this (JDom) is an area that I am not an expert in so please forgive me if this sounds odd.

First, can we have the error being spat out by PHP please?

Next, and this is where I am treading on thin ice, I see you are checking to see if an Object is empty. Perhaps checking to see if JDom is empty is not a good thing (again, i could be wrong!), so maybe you could check to see if the actual value of the object is valid:
if (empty($this->questionsitem)) {
 ... blah ... blah
}

I think you'll see what I mean, but I humbly apologise in advance to those that know better than I if this is way off track. I guess we'll both learn.

Regards,

Edward.
Passionate Joomla! Developer and J-Cook pro evangelist.
www.jcombuilder.com - we build great Joomla!® Components so you don't have to.
Last Edit: 06 Jun 2012 07:13 by edwardcox.
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Re: Adding conditional statements 06 Jun 2012 06:54 #2487

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Please edit your message and use the 'code' tag.


Edward is right, it is better to test the value of the object instead of the html returned by JDom.
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Re: Adding conditional statements 06 Jun 2012 11:34 #2492

  • geoffr
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Thanks for the replies. I tried testing the object, and doesn't seem to work. I realise the following is incorrect, but if you understand its intent, perhaps you can advise how to properly evaluate it?
if ( !empty( JDom::_('html.fly', array('dataKey' => 'media_caption','dataObject' => $this->questionsitem))) ) {

That is, would you mind confirming the proper syntax for testing the actual field value in the above line,
$this->questionsitem
?

Thanks again,
Geoff
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Re: Adding conditional statements 06 Jun 2012 12:30 #2493

  • edwardcox
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Hi Geoff,

So, here's what I tried and it works as advertised. The code section will only display the JDom output IF the value of my field '$this->transactionsitem->amount' (where 'amount' is my actual field..) is not empty. Is that what you are trying to accomplish?
<tr>
			<td align="right" class="key">
				<label for="amount">
					<?php echo JText::_( "QUOTEPLEASE_FIELD_AMOUNT" ); ?> :
				</label>
			</td>
			<td>
				<?php if (!empty($this->transactionsitem->amount)) { 
				echo JDom::_('html.form.input.text', array(
												'dataKey' => 'amount',
												'dataObject' => $this->transactionsitem,
												'size' => "10",
												'validatorHandler' => "decimal_10_2",
												'validatorRegex' => "/^\d{0,8}(\.\d{0,2})?$/"
												));
			}	?>
			</td>
		</tr>

Please let us know if that's not what you were trying to accomplish.

Regards,

Edward.

Note to self: contributing to the Forums and helping others is the BEST way to build your own skills and confidence. Just ask me. :-)
Passionate Joomla! Developer and J-Cook pro evangelist.
www.jcombuilder.com - we build great Joomla!® Components so you don't have to.
Last Edit: 06 Jun 2012 12:32 by edwardcox.
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Re: Adding conditional statements 06 Jun 2012 14:09 #2494

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Try this :
echo("<pre>"); print_r($this->transactionsitem); echo("</pre>");

It dump your object, so you can then individually test your object BEFORE to call JDom.
if ($this->transactionsitem->myValue == 'foo')
	...
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Re: Adding conditional statements 08 Jun 2012 03:34 #2507

  • geoffr
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Thanks for the help, but
echo("<pre>"); print_r($this->transactionsitem); echo("</pre>");
didn't return anything (but no error).

I'm really keen to find a solution ASAP ;-)

Thanks,
Geoff
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Re: Adding conditional statements 08 Jun 2012 03:37 #2508

  • geoffr
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Sorry Ed, I can't get this to work. Yes, I am simply trying to test if a field is empty (- or, even better, I am trying to evaluate the value of the field).

many thanks,
Geoff
Last Edit: 08 Jun 2012 03:40 by geoffr.
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Re: Adding conditional statements 08 Jun 2012 04:04 #2510

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Excuse me. If your object is 'questionsitem', then try this :
echo("<pre>"); print_r($this->questionsitem); echo("</pre>");

Please make an effort.
I cannot help you more. What you try to do is really really easy.
You can also try to get help about php searching on google.

www.google.com/search?q=php+test+empty+var
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Re: Adding conditional statements 08 Jun 2012 04:35 #2512

  • geoffr
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Thanks admin, I'm slightly insulted, but I'll get over it ;-) It's not a case of effort, but understanding. I got it working with:
echo("<pre>"); print_r($this->questionsitem->answer_1a); echo("</pre>");

regards.
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