How to create tree view hierarchy in php codeigniter?

Question

I have a array like this :

Array
(
    [0] => Array
        (
            [id] => 1
            [child_name] => "Emma"
            [parent_name] => "Mr Brown"
        )

    [1] => Array
        (
           [id] => 2
            [child_name] => "John"
            [parent_name] => "Mr Brown"
        )

    [2] => Array
        (
            [id] => 3
            [child_name] => "Joseph"
            [parent_name] => "Mr Thomas"
        )

    [3] => Array
        (
            [id] => 4
            [child_name] => "Pretty"
            [parent_name] => "Mr Thomas"
        )

    [4] => Array
        (
            [id] => 5
            [child_name] => "Raphel"
            [parent_name] => "Mr Brown"
        )

    [5] => Array
        (
            [id] => 6
            [child_name] => "Tommy"
            [parent_name] => "Mr Thomas"
        )

    [6] => Array
        (
            [id] => 7
            [child_name] => "Tim"
            [parent_name] => "Mr Thomas"
        )
)

From this array I want to generate a view like this :

The parent_name field becomes the MainCategory and the child_name becomes the subcategory. The names have checkboxes in front of them.

How do I achieve this? I don't have much experience in php. I code in node js but this task needs this to be done in php. How do I do this?

Nick · Accepted Answer · 2019-05-28 09:29:33Z

1

Try this, Here i use simple index() method and pass data to view file as an example.

You can use below code and test in your codeigniter.

Hope this will work for you.

Welcome.php (Controller)

public function index()
{
    $array = [
        [
            'id' => 1,
            'child_name' => "Emma",
            'parent_name' => "Mr Brown",
        ],
        [
            'id' => 2,
            'child_name' => "John",
            'parent_name' => "Mr Brown",
        ],
        [
            'id' => 3,
            'child_name' => "Joseph",
            'parent_name' => "Mr Thomas",
        ],
        [
            'id' => 4,
            'child_name' => "Pretty",
            'parent_name' => "Mr Thomas",
        ],
        [
            'id' => 5,
            'child_name' => "Raphel",
            'parent_name' => "Mr Brown",
        ],
        [
            'id' => 6,
            'child_name' => "Tommy",
            'parent_name' => "Mr Thomas",
        ],
        [
            'id' => 7,
            'child_name' => "Tim",
            'parent_name' => "Mr Thomas",
        ],
        [
            'id' => 8,
            'child_name' => "William",
            'parent_name' => "",
        ],
    ];

    $resultArray = [];
    foreach ($array as $key => $value) {
        if($value['parent_name'] != ''){
            $resultArray[$value['parent_name']][] = $value;
        }else{
            $resultArray[$value['child_name']] = [];
        }
    }
    $data = ['resultArray' => $resultArray];

    $this->load->view('welcome_message', $data);
}

welcome_message.php (view)

<div>
    <form name='sample'>
        <?php 
        foreach ($resultArray as $parentKey => $parentValue) {
            echo '<input type="checkbox" name="'.$parentKey.'" value="'.$parentKey.'">'.$parentKey.'<br>';
            foreach ($parentValue as $childKey => $childValue) {
                echo '&nbsp;&nbsp;&nbsp;<input type="checkbox" name="'.$childValue['child_name'].'" value="'.$childValue['child_name'].'">'.$childValue['child_name'].'<br>';
            }
        }
        ?>
    </form>
</div>

Output

edited May 28, 2019 at 9:29

answered May 13, 2019 at 11:44

Nick

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2 Comments

node_man Over a year ago

if one of the objects is [ 'id' => 1, 'child_name' => "Emma", 'parent_name' => "", ] i.e without the parent_name then in this case the child_name should become the parent name when displaying in the view. how to do it?

Nick Over a year ago

@node_man Please check my updated above code, here i take "id = 8" as your example and change my loop according to your requirement (please check output).

Rahul · Accepted Answer · 2019-05-13 11:11:17Z

1

Check this,

Loop your array, it will capture all values with same parent_name.

$result = [];
foreach ($array as $key => $value) {
    $result[$value['parent_name']][] = $value['child_name']; // loop your array
}

It should work.

answered May 13, 2019 at 11:11

Rahul

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