Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Basically you need to create a function in your Portfolio Page Controller (or in whatever page you need this logic to be).</p> <p>Here are 2 examples. First one just gets all the existing <code>FeaturedImage</code> from the database and returns then in random order:</p> <pre><code>function AllFeaturedImages() { return FeaturedImage::get()-&gt;sort('RAND()'); } </code></pre> <p>And this one get all the <code>FeaturedImage</code> from the page's children's children and return them in random order:</p> <pre><code>function DescendantFeaturedImages() { $featuredImages = array(); foreach ($this-&gt;Children() as $child) { foreach ($child-&gt;Children() as $grandChild) { $images = $grandChild-&gt;FeaturedImage(); if ( $images ) { $featuredImages = array_merge( $featuredImages, $images-&gt;toArray() ); } } } shuffle($featuredImages); return ArrayList::create($featuredImages); } </code></pre> <p>If the <code>FeaturedImage</code> relation is just a <code>has_one</code>, this changes a little bit:</p> <pre><code>function DescendantFeaturedImages() { $featuredImages = array(); foreach ($this-&gt;Children() as $child) { foreach ($child-&gt;Children() as $grandChild) { $image = $grandChild-&gt;FeaturedImage(); if ( $image ) { array_push( $featuredImages, $image ); } } } shuffle($featuredImages); return ArrayList::create($featuredImages); } </code></pre> <p>Then in your Portfolio Page template you can just loop through the <code>FeaturedImage</code> by calling the function name. So here, either <code>$AllFeaturedImages</code> or <code>$DescendantFeaturedImages</code>. In your case you'll get something like:</p> <pre><code>&lt;% loop $DescendantFeaturedImages %&gt; &lt;img src="$URL"/&gt; &lt;% end_loop %&gt; </code></pre> <p>I could find one example in the SilverStirpe tutorials using a Controller function: <a href="http://doc.silverstripe.org/framework/en/tutorials/2-extending-a-basic-site" rel="nofollow">http://doc.silverstripe.org/framework/en/tutorials/2-extending-a-basic-site</a></p> <p>Let me know how this goes.</p>
    singulars
    1. This table or related slice is empty.
    1. POSilverstripe 3: create page control function to get images from grandchild pages and sort all randomly
      singulars
      1. PTQuestion
    1. PTAnswer
    1. UScolymba
    1. UScolymba
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POSilverstripe 3: create page control function to get images from grandchild pages and sort all randomly
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COThanks so much for your thorough answer! Unfortunately I'm just getting a "server error" when I refresh the Portfolio page... The page just shows an un-styled version with no content or theme. I've used the second example and the template code you supplied. What more information can I supply to see what I'm doing wrong?
      singulars
      1. PO
      1. USpinkp
    2. CO@pinkp did you flush your templates?
      singulars
      1. PO
      1. USMarius Engen Haugen
    3. COYou should get more than just "server error", what's the error? Unless your site is not in dev mode... Also, I was just guessing the DataObject relations from your template (post a link to your classes to make sure). I've also fixed a typo in the template code above.
      singulars
      1. PO
      1. UScolymba
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload