How to remove Delete button, Edit button and Disable Order function on tree view?

[amun1303]

How to remove Delete button, Edit button and Disable Order function on tree view?

[amun1303]

Have any one can help me?

[il-aeeeee]

hi! I am edit \vendor\encore\laravel-admin\src\Tree.php \vendor\encore\laravel-admin\views\tree.blade.php

[amun1303]

Thanks @il-aeeeee I tried. But I don't want to change the vendor source code. I need something like the method $form->disableAction().

[isometriq]

I agree, I would like also a way to only manage the parent/child relation (parent_id) with drag-n-drop, but not ordering. Actually I would like the ordering to be alphabetical, like same as title, in my case name field... it would have been great to be able to use $tree->disableOrdering and $tree->disableDelete. After all there is already $tree->disableCreate()...

Probably the easiest way is to just put a order field and ignore it when using it in your frontend. If you can live with it.. but I don't like that.

@amun1303 In case you choose to the hard route (I may also..):

• You will have to overriding the template vendor/encore/laravel-admin/views/tree/tree.blade.php and vendor/encore/laravel-admin/views/tree/branch.blade.php in your resources folder.
• The jquery plugin is nestable ..it seems complicated to control the dragging (i would like to allow only dragging to change an item parent. The code for configuring that plugin is in vendor/encore/laravel-admin/src/Tree.php
• The required model trait vendor/encore/laravel-admin/src/Traits/ModelTree.php is using heavily ordering queries. It may be possible to override some methods directly on the model or extend the trait.

Lastly, even if there are a few bummers like these ..really love this useful package.

@z-song Do you have a plan for this?

[isometriq]

I did something to achieve just enough for what I needed, I created a trait that will replace certain functions in order to disable (ignore) ordering, but still allow parent change:

app/Admin/Traits/ModelTree.php

<?php

namespace App\Admin\Traits;

use Illuminate\Support\Facades\DB;

trait ModelTree
{
    /**
     * @var boolean
     */
    protected $disableOrdering = true;

    /**
     * Get all elements.
     *
     * @return mixed
     */
    public function allNodes()
    {
        $orderColumn = DB::getQueryGrammar()->wrap($this->disableOrdering ? $this->titleColumn : $this->orderColumn);
        $byOrder = $orderColumn.' = 0,'.$orderColumn;

        $self = new static();

        if ($this->queryCallback instanceof \Closure) {
            $self = call_user_func($this->queryCallback, $self);
        }

        return $self->orderByRaw($byOrder)->get()->toArray();
    }

    /**
     * Save tree order from a tree like array.
     *
     * @param array $tree
     * @param int   $parentId
     */
    public static function saveOrder($tree = [], $parentId = 0)
    {
        if (empty(static::$branchOrder)) {
            static::setBranchOrder($tree);
        }

        foreach ($tree as $branch) {
            $node = static::find($branch['id']);

            $node->{$node->getParentColumn()} = $parentId;

            if (!$node->disableOrdering) {
                $node->{$node->getOrderColumn()} = static::$branchOrder[$branch['id']];
            }

            $node->save();

            if (isset($branch['children'])) {
                static::saveOrder($branch['children'], $branch['id']);
            }
        }
    }
}

app/Models/Category.php:

<?php

namespace App\Models;

use Encore\Admin\Traits\AdminBuilder;
use Encore\Admin\Traits\ModelTree;
use App\Admin\Traits\ModelTree as AppModelTree;
use Illuminate\Database\Eloquent\Model;

class Category extends Model
{
    use ModelTree, AppModelTree, AdminBuilder {
        AppModelTree::allNodes insteadof ModelTree;
        AppModelTree::saveOrder insteadof ModelTree;
    }

    public function __construct(array $attributes = [])
    {
        parent::__construct($attributes);

        $this->setParentColumn('parent_id'); // same as default
        $this->setOrderColumn('order'); // not needed anymore
        $this->setTitleColumn('name'); // my specific field name
    }
}

You could also enable ordering by defining protected $disableOrdering = false;. And also if you don't want to use a trait, you can override the classes on the model directly in case its the only model that needs ordering disabled.

So what happens here is that the title column will be used for ordering. You can still try to change ordering when dragging, but when saving it will only remember the parent change. This also means that you don't need to have a order field in your table anymore. The ->select also works well.

..for disabling the delete, you know what to do ;-) vendor/encore/laravel-admin/views/tree/branch.blade.php

@z-song Check parts where I use $this->disableOrdering

[amun1303]

Thanks @isometriq I will try. But now I have to change from Tree model to Grid model for my business first.

[mubahood]

How can I disable editing the tree please?. I need only to display it.