Cannot use object of type templateParserNoCache as array

[Cabbit]

I am trying to print out a feed of posts into a html template that gets pushed into the page and cached. However i seem to only know how to print out one record into the html file instead of being able to built it up.

Best way i can explain it is i want posts to be some kind of array that keeps adding the $posts->display() of every record in the table to the end of the last one so posts would end up like.

<h2>Title</h2>
<p>Body text bla bla bal</p>
<h2>Tittle2</h2>
<p>body 2</p>
<!-- etc. -->

where just now the output is

<h2>Tittle2</h2>
<p>body 2</p>

/* Connect to the table */
		$task = "dbmysql";
		$query_select = "select `id`, `body`, `title`, `author`, `date` from `homePage`";
		$database_name = "abcomfor_groupproject";

		/* Initialise the database */
		$dbC = new DbControl($task);
		$dbC->selectDb($database_name);
		$dbC->setQuery($query_select);
		$dbR = $dbC->initiate();
		
		// Cycles though the results to see if the user exists //
		while ($dbR->next())
		{
		 	/* Feed the post into the template */
			$postFeed=array
			(
				'title'=>$dbR->get("title"),
				'body'=>$dbR->get("body"),
				'author'=>$dbR->get("author"),
				'date'=>$dbR->get("date"),
				'body'=>$dbR->get("body")
			);
			
			$posts =&new templateParserNoCache('../application/modules/bootstrap/views/posts.tpl.htm');
			$posts->parseTemplate($postFeed);
	
			// Echos the product //
			$posts = $posts->display();
		}
		echo $posts;

 

[Cabbit]

Been banging my head against the wall all weekend now, i had some success with a foreach loop but i got errors back saying i could not store the $post->display as part of an array.

 

[Cabbit]

$i = 0;
		// Cycles though the results to see if the user exists //
		while ($dbR->next())
		{	
			$i = $i + 1;
		 	/* Feed the post into the template */
			$postFeed=array
			(
				'title'=>$dbR->get("title"),
				'body'=>$dbR->get("body"),
				'author'=>$dbR->get("author"),
				'date'=>$dbR->get("date"),
				'body'=>$dbR->get("body")
			);
			
			$posts =&new templateParserNoCache('../application/modules/bootstrap/views/posts.tpl.htm');
			$posts->parseTemplate($postFeed);
	
			// Echos the product //
			$posts[$i] = $posts->display();
		}
		echo $posts;

By my logic this should take each post and build and array of them which is then echo'ed out as $posts. However i get a error message i have not seen before.

[16-Nov-2009 21:51:11] PHP Fatal error: Cannot use object of type templateParserNoCache as array in /nanashi/application/modules/bootstrap/bootstrap.php on line 66

 

[angelwatt]

Is templateParserNoCache something you created or is it a library? That seems to be where you need to look for getting this to work. If it's a library it should have some documentation to figure out how to use it as an array.

 

[Cabbit]

<?php
/*
	templateParserNoCache
	KittenBunny 2.0
	David Roy
*/

// uncached version
class templateParserNoCache
{
	// Variable for output
	public $output;
	
	// Checks for existance of the template file. //
	public function templateParserNoCache($templateFile='default_template.htm')
    {
		(file_exists($templateFile))?$this->output=file_get_contents($templateFile):die('Error:Template file '.$templateFile.' not found');
	}
	
	// Gets the tag array. //
	public function parseTemplate($tags=array())
	{
		if(count($tags)>0)
		{
			foreach($tags as $tag=>$data)
			{
				$data=(file_exists($data))?$this->parseFile($data):$data;
				$this->output=str_replace('{'.$tag.'}',$data,$this->output);
           	}
		}
        else 
      	{	
			// If no tags are found return a error. //
  			die('Error: No tags were provided for replacement.');
		}
	}
	
	// Injects the tags into the template. //
	public function parseFile($file)
  	{
		ob_start();
		include($file);
      	$content=ob_get_contents();
       	ob_end_clean();
       	return $content;
 	}

	// Returns the HTML page. //
	public function display()
	{
 		return $this->output;
	}

}

?>

this is it here.

 

[angelwatt]

I don't completely follow all of the code, but something I think I'm seeing is that when you're outputting the posts (using ->display()) it's doing that through the $output variable. Each templateParserNoCache object though has its own $output variable. So I think you're only seeing one post because it's only referencing the last post created. Again, that's a rough guess based on what I'm looking at.

I'm not really sure what

$posts =&new...

does either. I've never used that syntax (the =& part).

 

[Cabbit]

If i change it to

        // Cycles though the results to see if the user exists // 
        while ($dbR->next()) 
        {     
             /* Feed the post into the template */ 
            $postFeed=array 
            ( 
                'title'=>$dbR->get("title"), 
                'body'=>$dbR->get("body"), 
                'author'=>$dbR->get("author"), 
                'date'=>$dbR->get("date"), 
                'body'=>$dbR->get("body") 
            ); 
             
            $posts =&new templateParserNoCache('../application/modules/bootstrap/views/posts.tpl.htm'); 
            $posts->parseTemplate($postFeed); 
     
            // Echos the product // 
            echo $posts->display(); 
        }

All the results are printed out so i know this bit works, however i need to be able to build up an array so i can print all the results in another template.

 

[angelwatt]

Try this out. Note that a the top and near the bottom I have "or" comments where you should only use one or the other line.

$posts_out = array();
// or
$posts_out = '';
        // Cycles though the results to see if the user exists //
        while ($dbR->next())
        {    
             /* Feed the post into the template */
            $postFeed=array
            (
                'title'=>$dbR->get("title"),
                'body'=>$dbR->get("body"),
                'author'=>$dbR->get("author"),
                'date'=>$dbR->get("date"),
                'body'=>$dbR->get("body")
            );
            
            $posts =&new templateParserNoCache('../application/modules/bootstrap/views/posts.tpl.htm');
            $posts->parseTemplate($postFeed);
    
            // Echos the product //
            $posts_out[] = $posts->display();
            // or
            $posts_out .= $posts->display();
        }
        echo $posts_out;

 

[Cabbit]

^_^ fanks, working braw using

$posts_out = ""; 
        // Cycles though the results to see if the user exists // 
        while ($dbR->next()) 
        {     
             /* Feed the post into the template */ 
            $postFeed=array 
            ( 
                'title'=>$dbR->get("title"), 
                'body'=>$dbR->get("body"), 
                'author'=>$dbR->get("author"), 
                'date'=>$dbR->get("date"), 
                'body'=>$dbR->get("body") 
            ); 
             
            $posts =&new templateParserNoCache('../application/modules/bootstrap/views/posts.tpl.htm'); 
            $posts->parseTemplate($postFeed); 
     
            // Echos the product // 
            // or 
            $posts_out .= $posts->display(); 
        }

I do however have a question, can you explain or point me in the direction to how this method works and where its use is appropriate to a the type of array i was trying to use.

 

[angelwatt]

I do however have a question, can you explain or point me in the direction to how this method works and where its use is appropriate to a the type of array i was trying to use.

I don't quite get what you're asking. The .= is just a string concatenation. So the entire output is kept as a big long string. When you echo out an array object, it only says Array, it doesn't actually give the content of the array. You would need a loop to iterate through it. You also may have been reusing $posts too much. I think part of it was getting overwritten.

 

[Cabbit]

The .= is just a string concatenation.

This was the bit i did not understand, but from my gathering you say it just makes no matter what you put into it a string.

 

[angelwatt]

This was the bit i did not understand, but from my gathering you say it just makes no matter what you put into it a string.

Well, strings are what you were working with. The $output seems to be just a string, and that's what comes back from display(). I've only ever used .= for strings. I don't know how it reacts to other data types.