Laravel 5 Nestable

Laravel Nestable to work with recursive logic. Category level there is no limit but this may vary depending on your server performance. Allow the 100000 recursion process execution since PHP 5.2. More info

Install

composer require atayahmet/laravel-nestable

Then

Add to app.php the Service Provider file.

Nestable\NestableServiceProvider::class

Then add app.php Facade file again.

'Nestable' => Nestable\Facades\NestableService::class

Finally run the artisan command:

php artisan vendor:publish --provider="Nestable\NestableServiceProvider"

That's it!

Basic Usage with Eloquent

Suppose that the data came from a database as follows.

Category table:

id	parent_id	name	slug
1	0	T-shirts	t-shirts
2	1	Red T-shirts	red-t-shirts
3	1	Black T-shirts	black-t-shirts
4	0	Sweaters	sweaters
5	4	Red Sweaters	red-sweaters
6	4	Blue Sweaters	blue-sweaters

Example 1:

<?php

use Nestable\NestableTrait;

class Category extends \Eloquent {

    use NestableTrait;

    protected $parent = 'parent_id';

}

Note: $parent variable refers to the parent category (Default parent_id)

<?php

$categories = Category::nested()->get();

Query result:

<?php

array:6 [
      0 => array:5 [
        "id" => 1
        "name" => "T-shirts"
        "slug" => "t-shirts"
        "child" => array:2 [
          0 => array:5 [
            "id" => 2
            "name" => "Red T-shirts"
            "slug" => "red-t-shirts"
            "child" => []
            "parent_id" => 1
          ]
          1 => array:5 [
            "id" => 3
            "name" => "Black T-shirts"
            "slug" => "black-t-shirts"
            "child" => []
            "parent_id" => 1
          ]
        ]
        "parent_id" => 0
      ]
      1 => array:5 [
        "id" => 4
        "name" => "Sweaters"
        "slug" => "sweaters"
        "child" => array:2 [
          0 => array:5 [
            "id" => 5
            "name" => "Red Sweaters"
            "slug" => "red-sweaters"
            "child" => []
            "parent_id" => 4
          ]
          1 => array:5 [
            "id" => 6
            "name" => "Blue Sweaters"
            "slug" => "blue-sweaters"
            "child" => []
            "parent_id" => 4
          ]
        ]
        "parent_id" => 0
    ]
]

For html tree output:

<?php

Category::renderAsHtml();

Output:

<ul>
    <li><a href="">T-shirts
        <ul>
            <li><a href="red-t-shirt">Red T-shirt</a></li>
            <li><a href="black-t-shirts">Black T-shirts</a></li>
        </ul>
    </li>

    <li><a href="">Sweaters
        <ul>
            <li><a href="red-sweaters">Red Sweaters</a></li>
            <li><a href="blue-sweaters">Blue Sweaters</a></li>
        </ul>
    </li>
</ul>

For dropdown output:

<?php

Category::attr(['name' => 'categories'])
    ->selected(2)
    ->renderAsDropdown();

Output:

<select name="categories">
    <option value="1">T-shirts</option>
    <option value="2" selected="selected">  Red T-shirts</option>
    <option value="3">  Black T-shirts</option>

    <option value="4">Sweaters</option>
    <option value="5">  Red Sweaters</option>
    <option value="6">  Blue Sweaters</option>
</select>

Selected for multiple list box:

->selected([1,2,3])

Output methods

name	Parameter	output
renderAsArray()	none	array
renderAsJson()	none	json
renderAsHtml()	none	html
renderAsDropdown()	none	dropdown
renderAsMultiple()	none	Listbox

Usable methods with output methods

renderAsArray()

name	paremeter	description
parent()	int	Get childs of the defined parent

renderAsJson()

name	paremeter	description
parent()	int	Get childs of the defined parent

renderAsHtml()

name	paremeter	description
parent()	int	Get childs of the defined parent
active()	callback/array/int	Selected item(s) for html output
ulAttr()	array/string	Add attribute to parent ul element
firstUlAttr()	array/string	Add attribute to parent ul element
route()	callback/array	Generate url by route name
customUrl()	string	Generate custom url

renderAsDropdown()/renderAsMultiple()

name	paremeter	description
parent()	int	Get childs of the defined parent
selected()	callback/array/int	Selected item(s) for dropdown
attr()	array	Dropdown/listbox attributes

parent()

Get childs of the defined parent.

<?php

Category::parent(2)->renderAsArray();

Note: This methods usable all with output methods

active()

Selected item(s) for html output.

Example 1:

<?php

Menu::active('t-shirts')->renderAsHtml();

Example 2:

<?php

Menu::active('t-shirts', 'black-t-shirts')->renderAsHtml();

Example 3:

<?php

Menu::active(['t-shirts', 'black-t-shirts'])->renderAsHtml();

Example 4:

<?php

Menu::active(function($li, $href, $label) {

    $li->addAttr('class', 'active')->addAttr('data-label', $label);

})->renderAsHtml();

Example 5:

<?php

Menu::active(function($li, $href, $label) {

    $li->addAttr(['class' => 'active', 'data-label' => $label]);

})->renderAsHtml();

firstUlAttr()

Add attribute to first ul element

Example 1:

<?php

Menu::firstUlAttr('class', 'first-ul')->renderAsHtml();

Example 2:

<?php

Menu::firstUlAttr(['class' => 'first-ul'])->renderAsHtml();

ulAttr()

Add attribute to parent ul element

Example 1:

<?php

Menu::ulAttr('class', 'nav-bar')->renderAsHtml();

Example 2:

<?php

Menu::ulAttr(['t-shirts' => 'black-t-shirts'])->renderAsHtml();

Example 3:

<?php

Menu::ulAttr(function($ul, $parent_id) {

    if($parent_id == 10) {
        $ul->ulAttr('class', 'nav-bar');
    }

})->renderAsHtml();

route()

Generate url by route name

Example 1:

<?php

Menu::route(['product' => 'slug'])->renderAsHtml();

Note: product refer to route name and slug refer to paremeter name.

<?php

Route::get('product/{slug}', 'ProductController@show');

Example 2:

<?php

Menu::route(function($href, $label, $parent) {

    return \URL::to($href);

})->renderAsHtml();

customUrl()

Generate custom url with slug

Example 1:

<?php

Menu::customUrl('product/detail/{slug}')->renderAsHtml();

Example 1:

<?php

Menu::customUrl('product/{slug}/detail')->renderAsHtml();

Note: slug keyword belongs to html > href in config file.

selected()

Selected item(s) for dropdown.

Example 1:

<?php

Category::selected(1)->renderAsDropdown();

Example 2:

<?php

Category::selected(1,5)->renderAsMultiple();

Example 3:

<?php

Category::selected([1,3])->renderAsMultiple();

Example 4:

<?php

Category::selected(function($option, $value, $label) {

    $option->addAttr('selected', 'true');
    $option->addAttr(['data-item' => $label]);

})->renderAsMultiple();

attr()

Dropdown/listbox attributes.

<?php

Category::attr(['name' => 'categories', 'class' => 'red'])->renderAsDropdown();

Configuration

The above examples were performed with default settings. Config variables in config/nestable.php file.

name	type	description
parent	string	Parent category column name
primary_key	string	Table primary key
generate_url	boolean	Generate the url for html output
childNode	string	Child node name
body	array	Array output (default)
html	array	Html output columns
dropdown	array	Dropdown/Listbox output

body

The body variable should be an array and absolutely customizable.

Example:

<?php

'body' => [
    'id',
    'category_name',
    'category_slug'
]

html

Configuration for html output.

name	description
label	Label column name
href	Url column name

Example:

<?php

'html' => [
    'label' => 'name',
    'href'  => 'slug',
]

dropdown

Configuration for dropdown/listbox output.

name	description
prefix	Label prefix
label	Label column name
value	Value column name

Example:

<?php

'dropdown' => [
    'prefix' => '-',
    'label'  => 'name',
    'value'  => 'id'
]

Using Independent Models

Include the Nestable facade.

<?php

use Nestable;

$result = Nestable::make([
    [
        'id' => 1,
        'parent_id' => 0,
        'name' => 'T-shirts',
        'slug' => 't-shirts'
    ],
    [
        'id' => 2,
        'parent_id' => 1,
        'name' => 'Red T-shirts',
        'slug' => 'red-t-shirts'
    ],
    [
        'id' => 3,
        'parent_id' => 1,
        'name' => 'Black T-shirts',
        'slug' => 'black-t-shirts'
    ]
    // and more...
]);

For array output:

$result->renderAsArray();

Validators

It controls the structure of the data. They also made the rendering process with a second parameter control after they.

name	Parameters
isValidForArray	boolean
isValidForJson	boolean
isValidForHtml	boolean
isValidForDropdown	boolean
isValidForMultiple	boolean

Example 1:

<?php

Menu::make($categories)->isValidForHtml();

// return true or false

Example 2:

<?php

Menu::make($categories)->isValidForHtml(true);

// return html string if data valid

Macros

<?php

Nestable::macro('helloWorld', function($nest, $categories) {

    return $nest->make($categories)->active('sweater')->route(['tests' => 'slug'])->renderAsHtml();

});

Call the above macro:

<?php

$categories = [

    [
        'id'        => 1,
        'parent_id' => 0,
        'name'      => 'T-shirt',
        'slug'      => 'T-shirt'
    ],
    [
        'id'        => 2,
        'parent_id' => 0,
        'name'      => 'Sweater',
        'slug'      => 'sweater'
    ]

];

Nestable::helloWorld($categories);

Helper

<?php

nestable($data)->renderAsHtml();

<?php

nestable()->make($data)->renderAsHtml();

<?php

nestable()->macro('helloWorld', function() {
    return 'Hello Laravel';
});

// run
nestable()->helloWorld();