if, if:else, and all else fails!

#1 / Sep 04, 2010 4:42pm

James Hurst

48 posts

Hmm - so i’ve been trying out various combinations of the conditionals - and keep drawing a blank (literally!) anyone got any ideas about why:

{exp:weblog:entries weblog="home" }
{reverse_related_entries}
{if count >= "1"}
        <div class="span-24 last">
                <hr >
        <div id="slider">
                            {/if}
                                <a href="http://{path={url}{weblog}/{url_title}}">_                                    {image}_                                        {if homepage_image !=''}_                                            {exp:imgsizer:size src="{homepage_image}" width="950px" height="400px" base_path="/home/printclub/NV6S9T0F/htdocs/" base_cache="/home/printclub/NV6S9T0F/htdocs/alpha/images/sized"}_                                            {sized}</a>
                                        {if:else}
                                            {exp:imgsizer:size src="{image_file}" width="950px" height="400px" base_path="/home/printclub/NV6S9T0F/htdocs/" base_cache="/home/printclub/NV6S9T0F/htdocs/alpha/images/sized"}
                                            {sized}</a>
                                        {/if}
                                    {/exp:imgsizer:size}
                                    {/image}
                                <div id="htmlcaption_{entry_id}" class="nivo-html-caption">
                                <em>{weblog}: </em><a href="http://{path={url}{weblog}/{url_title}}">{title}</a>
                                

                                </div>
                            {if count==total_results}
        </div>
        </div>
{/if}
{/reverse_related_entries}
{/exp:weblog:entries}

Would result in the ‘white-screen of a conditional error’?

If its useful - i’m using Pixel and Tonic’s Playa and Matrix - and both the

{image_file}

and

{homepage_image}

work beautifully when stripped out of the if, if:else conditional… and taking the ‘if count == total_results out of the equation makes no difference.

In an ideal world (and which doesn’t seem to work) I would love to

{image}
{exp:imgsizer:size src="{if homepage_image !=''}{homepage_image}{if:else}{image_file}{/if}" width="950px" height="400px" base_path="/home/printclub/NV6S9T0F/htdocs/" base_cache="/home/printclub/NV6S9T0F/htdocs/alpha/images/sized"}
{sized}</a>
{/exp:imgsizer:size}
{/image}

I’m trying to set up a system where the user is able to relate an item to a homepage slideshow - but allows for a specific homepage slideshow image to be used in case the imd Sizr crop isn’t acceptable.

Any help much appreciated.

James

#2 / Sep 05, 2010 4:28pm

Greg Salt

3988 posts

Hi James,

I would recommend stripping this down to its bare minimum until you are confident that a basic skeleton works then adding in your real data a piece at a time until something breaks. However, this code looks like it might be the problem:

{image}
    {if homepage_image !=''}
        {exp:imgsizer:size src="{homepage_image}" width="950px" height="400px" base_path="/home/printclub/NV6S9T0F/htdocs/" base_cache="/home/printclub/NV6S9T0F/htdocs/alpha/images/sized"}
            {sized}</a>
    {if:else}
        {exp:imgsizer:size src="{image_file}" width="950px" height="400px" base_path="/home/printclub/NV6S9T0F/htdocs/" base_cache="/home/printclub/NV6S9T0F/htdocs/alpha/images/sized"}
            {sized}</a>
    {/if}
        {/exp:imgsizer:size}
{/image}

What you are doing here is trying to display only the opening tag of imgsizer with differing parameters based upon the value of a field. This is bad practice generally and you should enclose the entire plugin including the end tag inside a conditional block. This particular example though will always fail because you are using Advanced Conditionals. Advanced Conditionals are evaluated after all the EE tags are parsed so this code is declaring two opening tags for imgsizer. Try it like this:

{image}
    {if homepage_image !=''}
        {exp:imgsizer:size src="{homepage_image}" width="950px" height="400px" base_path="/home/printclub/NV6S9T0F/htdocs/" base_cache="/home/printclub/NV6S9T0F/htdocs/alpha/images/sized"}
            {sized}</a>
        {/exp:imgsizer:size}
    {/if}
    {if homepage_image == ''}
        {exp:imgsizer:size src="{image_file}" width="950px" height="400px" base_path="/home/printclub/NV6S9T0F/htdocs/" base_cache="/home/printclub/NV6S9T0F/htdocs/alpha/images/sized"}
            {sized}</a>
        {/exp:imgsizer:size}
    {/if}    
{/image}

Whether there might be other issues caused by the 3rd party fields I can’t say. If you continue to have problems with this then please try simplifying the blocks and putting placeholder code in until you can identify where the issue is.

Cheers

Greg

#3 / Sep 06, 2010 7:59pm

James Hurst
48 posts

Hi Greg - that perfect.

Thank you for the response - and the link through to the parse order of advanced conditionals.

All the best
James
#4 / Sep 07, 2010 11:16am

Sue Crocker
26054 posts

Glad Greg was able to help. Don’t hesitate to post again as needed.

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