passing variable from controller to view with CodeIgniter - codeigniter

Question

I'm trying to structure my controllers in several small functions and I'm struggling with the following code:
building controller:
public function index(){
$data['title'] = 'my title part 1';
$data['title'] .= 'my title part 2';
$data = $this->function1();
$data = $this->function2();
$data['end'] .= 'end of this block';
$data['main_content'] = 'buildingView';
$this->load->view('templates/default',$data);
}
public function1(){
$data['block1'] = 'test1';
$data['blockA'] = 'testA';
$data['blockB'] = 'testB';
$data['blockC'] = 'testC';
return $data;
}
public function2(){
$data['block2'] = 'test2';
$data['block3'] = 'test3';
$data['block4'] = 'test4';
$data['block5'] = 'test5';
return $data;
}
buildingView
echo $title;
echo $block1;
echo $block2;
echo $end;
The problem is that the $data variable from function2 overwrites the one from from function1.
How can I pass the data generated from within Index and both functions?
I've tried the code below but it doesn't work either:
$data[] = $this->function1();
$data[] = $this->function2();
EDIT: I edited functions 1 & 2 because they actually return an array of several variables.

Answer 1

You are overriding $data variable. So for your condition use array_merge() and keep it on top in $data variable. Like below
public function index(){
$data1 = $this->function1();
$data2 = $this->function2();
$data = array_merge($data1,$data2);
$data['title'] = 'my title part 1';
$data['title2'] .= 'my title part 2';
$data['end'] .= 'end of this block';
$data['main_content'] = 'buildingView';
$this->load->view('templates/default',$data);
}
public function1(){
$data['block1'] = 'test1';
$data['blockA'] = 'testA';
$data['blockB'] = 'testB';
$data['blockC'] = 'testC';
return $data;
}
public function2(){
$data['block2'] = 'test2';
$data['block3'] = 'test3';
$data['block4'] = 'test4';
$data['block5'] = 'test5';
return $data;
}

Answer 2

public function index()
{
$data['title'] = 'my title part 1';
$data['title'] .= 'my title part 2';
$data['block1'] = $this->function1();
$data['block2'] = $this->function2();
$data['end'] .= 'end of this block';
$data['main_content'] = 'buildingView';
$this->load->view('templates/default',$data);
}
The results of your functions will be accessed in the view with the vars $block1 and $block2.
These definitions work better for demonstration purposes
public function function1()
{
return 'test1';
}
public function function2()
{
return 'test2';
}
With the helper function defined as in your question's code
public function function1(){
$data['block1'] = 'test1';
return $data;
}
And assigning the return to a var that is then passed to the view
$data['func1'] = $this->function1();
$this->load->view('templates/default',$data);
In the view do this to show the result
echo $func1['block1'];
It is very common and perfectly acceptable to pass arrays to views.
public function function2(){
$data['block1'] = 'test2';
$data['block2'] = 'test3';
$data['block3'] = 'test4';
$data['block4'] = 'test5';
return $data;
}
Passed to the view
$data['func2'] = $this->function2();
$this->load->view('templates/default',$data);
Accessed in the view. This time using an iterator to display each item
in the array.
foreach($func2 as $item)
{
echo $item."<br>";
}
Or get each item one at a time
echo $func2['block1']."<br>";
echo $func2['block2']."<br>";
echo $func2['block3']."<br>";
echo $func2['block4']."<br>";
You can pass object instances to a view too. This version of function2() returns an object instance.
public function function2()
{
$data = new stdClass();
$data->block1 = 'test2';
$data->block2 = 'test3';
$data->block3 = 'test4';
$data->block4 = 'test5';
return $data;
}
Assign the function return to an array that's passed to a view
$data['obj2'] = $this->function2();
$this->load->view('templates/default',$data);
Using it in the view
echo $obj2->block1;
echo $obj2->block2;
...
Iterators (foreach) works on object instances too.