Hi all, anyone able to help me solve an error I get with echo Render::listRecipes($cookbook-getRecipeTitles());

Question

Hi all I am getting the following error:
treehouse:~/workspace$ php cookbook.php                                                                            
PHP Warning:  asort() expects parameter 1 to be array, null given in /home/treehouse/workspace/classes/render.php o
n line 40                                                                                                          
PHP Warning:  Invalid argument supplied for foreach() in /home/treehouse/workspace/classes/render.php on line 42   
treehouse:~/workspace$  
When calling:
echo Render::listRecipes($cookbook->getRecipeTitles()); 
from the cookbook file. 
I have included all the other relevant files into cookbook: 
include "classes/recipes.php";
include "classes/render.php";
include "classes/recipecollection.php";
include "inc/allrecipes.php";
....And these are the relevant methods:
public static function listIngredients($ingredients)
    {
        $output = "";
        foreach ($ingredients as $ing) {
            $output .= $ing["amount"] . " " . $ing["measure"] . " " . $ing["item"];
            $output .= "
";
        }
        return $output;
    }
 public function getRecipeTitles()
    {
        $titles = array();
        foreach ($this->recipes as $recipe) {
            $titles[] = $recipe->getTitle();
        }
    }
   public function getTitle()
    {
        return $this->title;
    }
Their parent classes have been working ok so far so I assume the problem is not to do with that. 
Any help welcome as always : )

jb30 · Answer

getRecipeTitles() is missing a return statement.
php
<?php public function getRecipeTitles() 
{ 
    $titles = array(); 
    foreach ($this->recipes as $recipe) { 
        $titles[] = $recipe->getTitle(); 
    } 
    return $titles; // Without this line, nothing will be returned from the function
}
?>

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Matt Nickolls

Matt Nickolls

Hi all, anyone able to help me solve an error I get with echo Render::listRecipes($cookbook->getRecipeTitles());

1 Answer

jb30

jb30