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question add image template - noob


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20 Posts   3262 Views

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wachupe

Community Member, 15 Posts

14 July 2011 at 6:40am

Edited: 14/07/2011 6:42am

Hi I'm new to using silverstripe and I have a question
how do I show all images that are inside a folder in the template, and that if I change an image by a tab
automaticamanete change to the template?

pd: sorry for my english :(

Avatar
zenmonkey

Community Member, 545 Posts

15 July 2011 at 3:21am

I've done something like that to parse a CSV upload and automatically attach images to a dataobject. No real reason you couldn't do something like that right on a page object, though it may not be the most efficient way to do it.

First you need to add a has one relation to your DataObject ( in this case I assume it would be a page)

static $has_one = array (
		//Folder
		"ImageFolder" => "SiteTree"
	);

The CMSField would look something like this

$fields->addFieldToTab("Root.Main", new TreeDropdownField('ImageFolderID', 'Image Folder', "Folder"));

Basically you're adding a new drop down field with the names of only Folders

Then you'd need a function to get the images in that folder

function GetMyImages(){

$folderID=$this->ImageFolderID;
// get images in the folder $folderIF
$images = DataObject::get("File", "ParentID ='$folderID');

if ($images) {
return $images;
} else {
return false;
}

That should work, I haven't tested it though, just going off the top of my head. Like I said I was parsing a CSV file to attach specific images to a dataobject. You should be able to access that in a template with:

<% control GetMyImages %>
$Image
<% end_control %>

You may run into problems if you have non images in the folder and you may need to filter out the images in the $images dataobject

Avatar
wachupe

Community Member, 15 Posts

15 July 2011 at 5:15am

hI zenmonkey, thx for you reply

add the tab main in the site tree , but when I select the folder shows nothing

this is mi php

<?php
/**
 * Defines the HomePage page type
 */
 
class HomePage extends Page {
   static $db = array(
   );
   static $has_one = array(
   "ImageFolder" => "SiteTree" 
   );
   
   
   	public function getCMSFields() {		
		
		$fields = parent::getCMSFields();     
		
		 
		$fields->addFieldToTab("Root.Main", new TreeDropdownField('ImageFolderID', 'Image Folder', "Folder"));
		return $fields;
	}
}
  
class HomePage_Controller extends Page_Controller {

		function GetMyImages(){

		$folderID=$this->ImageFolderID; 
		// get images in the folder $folderIF 
		$images = DataObject::get("File", "ParentID =$3");

		if ($images) { 
		return $images; 
		} else { 
		return false; 
		}
	}	    
}

Avatar
zenmonkey

Community Member, 545 Posts

15 July 2011 at 6:16am

You do have an error in your code (as does my original, i forgot the closing quote)

$images = DataObject::get("File", "ParentID =$3");

Should be
$images = DataObject::get("File", "ParentID ='$folderID'");

Beyond that I just realized GetMyImages doesn't return the DataObject as an Image and therefor doesn't generate the tag for you. You need to use $Tag instead of $Image in your template or build the tag yourself <img src="$Filename" width="$Width" height="$Height" />

This isn't ideal, but maybe someone else has an easier way of converting the DataObject into a set of Images. The Gallery module may have some hints

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wachupe

Community Member, 15 Posts

15 July 2011 at 7:43am

Edited: 15/07/2011 8:02am

when I select the folder "Uploads" shows nothing :'c
and in the template the control only show 3 items found within the assets folder and not in uploads.

<img src="/assets/error-404.html" alt="error-404.html" />
<img src="/assets/error-500.html" alt="error-500.html" />
<img src="/assets/Uploads/" alt="Uploads" />

These are the archives showing

pd: sry for the problems :'c

Avatar
zenmonkey

Community Member, 545 Posts

15 July 2011 at 8:00am

Are there images in the folder? Personally I'd recommend creating a separate folder to draw from. And make sure if you've uploaded via FTP to go the Files and Images tab and search for new images. You could also change

$images = DataObject::get("File", "ParentID ='$folderID'");

to
$images = DataObject::get("File", "ParentID ='$folderID' AND ClassName='Image'");

That should restrict it to only looking for Images and prevent it returning any subfolders and other files

Avatar
wachupe

Community Member, 15 Posts

15 July 2011 at 8:40am

thx, this works!!! :D

have a question, when add the images for a tab, that displays a pop up, in this add the external link.

I must add the control to select the image that takes me to that address

Avatar
zenmonkey

Community Member, 545 Posts

15 July 2011 at 8:44am

Not sure what you mean. Sorry.

Do you want the images to link to external Sites?

Do you have an example published somewhere to help?

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