I'm getting an error, and can't figure this out! undefined method. and it's defined inside of class public function

Question

What is wrong here? help?
treehouse:~/workspace$ php cookbook.php                                                             
PHP Fatal error:  Uncaught Error: Call to undefined method Recipe::getTitle() in /home/treehouse/wor
kspace/classes/RecipeCollection.php:37                                                              
Stack trace:                                                                                        
0 /home/treehouse/workspace/cookbook.php(26): RecipeCollection->getRecipeTitles()
1 {main}
  thrown in /home/treehouse/workspace/classes/RecipeCollection.php on line 37                       
Fatal error: Uncaught Error: Call to undefined method Recipe::getTitle() in /home/treehouse/workspac
e/classes/RecipeCollection.php:37                                                                   
Stack trace:                                                                                        
0 /home/treehouse/workspace/cookbook.php(26): RecipeCollection->getRecipeTitles()
1 {main}
  thrown in /home/treehouse/workspace/classes/RecipeCollection.php on line 37
<?php class RecipeCollection 
{
  private $title;
  private $recipes = array();
   public function __construct($title = null) {
    $this->setTitle($title); 
  }
  public function setTitle($title) 
  {
    if(empty($title)) {
      $this->title = null;
    } else {
    $this->title = ucwords($title);  
    }
  }
  public function getTitle() {
     return $this->_title;
  }
  public function addRecipe($recipe) {
    $this->_recipes[] = $recipe;
  }
  public function getRecipes() {
    return $this->_recipes;    
  }
  public function getRecipeTitles() {
$titles = array();    
foreach ($this->_recipes as $_recipe) {
  $titles[] = $_recipe->getTitle();
}
return $titles;
  }
}

Serhii Lihus · Accepted Answer

Hi there Ronaldo Fialho!
Do not be afraid to read the error description. It doesn't bite;) 
In this case problem is next:
*PHP Fatal error: Uncaught Error: Call to undefined method Recipe::getTitle() *
You are trying to invoke method getTitle() from the array element. Which is not correct. if you want to get object then you need to have array of objects that can invoke such method. 
Another small thing concerns property _title 
php
 public function getTitle() { return $this->title; }

should be rewritten to this(you've forgot about underscore)
php
 public function getTitle() { return $this->_title; }

But, if you want to invoke method from foreach loop, you need to redo your code a little.
```php
public function addRecipe($recipe) { $this->_recipes[] = $this; }
 public function getRecipeTitles() {
  $titles = array();    
  foreach ($this->_recipes as $_recipe) {
     $titles[] = $_recipe->getTitle();
  }
  return $titles;
 } 
```
Above is working version of your code. But it is a mistery to me what are you trying to achieve =)
```php
class RecipeCollection { 
    private $title; 
    private $recipes = array();
public function __construct($title = null) { $this->setTitle($title); }

public function setTitle($title) { 
    if(empty($title)) { $this->title = null; } 
    else 
    { $this->_title = ucwords($title);} 
}

public function getTitle() { return $this->title; }

public function addRecipe($recipe) { $this->_recipes[] = $recipe; }

public function getRecipes() { return $this->_recipes; }

public function getRecipeTitles() {

$titles = array();    
  foreach ($this->_recipes as $_recipe) {
     $titles[] = $_recipe;
  }
  return $titles;
} 
}
$recipe = new RecipeCollection('One');
$recipe->addRecipe('some desсription');
print_r($recipe->getRecipeTitles());
```
Hope that this will explain few things.
Best regards.

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Ronaldo Fialho

Ronaldo Fialho

I'm getting an error, and can't figure this out! undefined method. and it's defined inside of class public function

0 /home/treehouse/workspace/cookbook.php(26): RecipeCollection->getRecipeTitles()

1 {main}

0 /home/treehouse/workspace/cookbook.php(26): RecipeCollection->getRecipeTitles()

1 {main}

1 Answer

Serhii Lihus

Serhii Lihus

Ronaldo Fialho

Ronaldo Fialho