Default variable value in blade Laravel

Question

How do I set a default value to a variable in a blade partial?

So for example I have 2 variables:

softDelete
delete

witch I want by default to be true.

@if($softDelete)
    <span data-toggle="tooltip" title="Publish">
        <a href="#delete-{{ $id }}" class="btn btn-default btn-xs btn-flat">
            <i class="fa fa-check"></i>
        </a>
    </span>
@endif

@if($delete)
    <span data-toggle="tooltip" title="Delete">
        <a href="#delete-{{ $id }}" class="btn btn-danger btn-xs btn-delete btn-flat details" data-toggle="modal" data-target="#delete_modal">
            <i class="fa fa-trash"></i>
        </a>
    </span>
@endif

And when I send the view from controller to change the value for some of the variables, depending the case I need.

return view('platform.pages.blocks.property_table_actions',
    [
        'id' => $model->id,
        'delete' => false
    ]);

I tried with a provider:

public function composeActionButtons()
{
    view()->composer('platform.pages.blocks.property_table_actions', function ($view) {
        $view
            ->with('softDelete', true)
            ->with('delete', true)
            ->with('view', true)
            ->with('edit', true);
    });
}

but override the false values from controller.

@IonVasile Then your statement "I have 2 variables" is incorrect, at least in the view's scope. — ceejayoz
– ceejayoz, Commented Jun 20, 2016 at 15:50

Alex Meyer · Accepted Answer · 2016-06-20 12:50:44Z

5

Sometimes you may wish to echo a variable, but you aren't sure if the variable has been set. Basically, you want to do this:

However, instead of writing a ternary statement, Blade allows you to use the following convenient short-cut:

from the laravel docs.. it should check with isset if the variable exists.. if not a default value is shown

answered Jun 20, 2016 at 12:50

Alex Meyer

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7 Comments

Sebastian Corneliu Vîrlan Over a year ago

The logic is not good: @if(isset($edit) or true) <span data-toggle="tooltip" title="Edit"> </span> @endif will always be true. There must be a way by default to set all variables to true, and when I render a view to set false only the button I need.

Alex Meyer Over a year ago

to be clear you want all variables default on true, only if you override it in the controller as false right?

Sebastian Corneliu Vîrlan Over a year ago

Yes, this is what I want.

Alex Meyer Over a year ago

Then you can solve it via the blade default variable.. or this pastebin.com/0xTYHSMt

Sebastian Corneliu Vîrlan Over a year ago

With the code in pastebin the default will be false for all variables, and I need true.

|

Mike Barwick · Accepted Answer · 2016-06-20 16:25:54Z

0

I think you're approaching this task in the wrong way - personally. But if you insist, you could also just include a partial (I do this sometimes). Say in a variable, etc.

For example, something like this:

// in your view
@include('some.directory.for.partials', ['softDelete' => 'false']) // you can change this to any value

// partial can then run something like this:
@if(count($softDelete) || $softDelete)
    ...
@else
    ...
@endif

That said, I think you could probably just assign the variable in your controller when you're rendering your view. You're assigning a variable anyways. Why make things complicated with a view composer - when that logic could be in your controller? Just set 'delete' => false to true or what have you for each.

edited Jun 20, 2016 at 16:25

answered Jun 20, 2016 at 16:01

Mike Barwick

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5 Comments

Sebastian Corneliu Vîrlan Over a year ago

I would like to know the best practice way. How would you approach? To be clear I want all variables default on true, only if I override it in the controller as false.

Mike Barwick Over a year ago

I would define the variable already in the controller before the view is rendered. You're already doing that in your return view(... anyways. Define the variable there. Don't make things complicated. :)

Sebastian Corneliu Vîrlan Over a year ago

Yes but I have 20 crud controllers, and for each of them I have or not have some of that buttons. And by default I want to have all variables true. In the question I gave 2 buttons as example but in my case I have 5. So if I follow your example I would have to write for each of this buttons if true or false. And my intention was to declare false if only is neede.

Mike Barwick Over a year ago

Then just use my example. You don't need the view composer (the problem with a view composer is the variables will be added last and will override your controller ones. So think of this logic backwards and reverse the process). Create a partial for those buttons. They're all visible by default, based on an @if conditional in the partial. If one is FALSE, enter variable in the @include method like in my example.

Sebastian Corneliu Vîrlan Over a year ago

Please take a look: stackoverflow.com/questions/37921911/…

Sebastian Corneliu Vîrlan · Accepted Answer · 2016-06-21 17:52:25Z

0

I found the best method to be this:

<?php

 namespace App\Providers;

 use Illuminate\Support\Facades\Log;
 use Illuminate\Support\Facades\View;
 use Illuminate\Support\ServiceProvider;

 class ViewComposerServiceProvider extends ServiceProvider
{
/**
 * Bootstrap the application services.
 *
 * @return void
 */
public function boot()
{
    $this->composeActionButtons();
}

/**
 * Register the application services.
 *
 * @return void
 */
public function register()
{
    //
}

/**
 * Compose the Recent sidebar
 */
public function composeActionButtons()
{
    view()->creator('platform.pages.blocks.property_table_actions', function ($view) {
        $view
            ->with('softDelete', true)
            ->with('delete', true)
            ->with('view', true)
            ->with('edit', true);
    });

}
}

and in controller:

  return view('platform.pages.blocks.property_table_actions',
    [
        'id' => $model->id,
    ])
    ->with(['edit' =>false, 'softDelete' => false]);

View creators work almost exactly like view composers; however, they are fired immediately when the view is instantiated. The callback that I defined with the Creator is called immediately after view() , which is before any ->with()s. This enables me to set a default value for the View and then override it when the View is called, if desired.

edited Jun 21, 2016 at 17:52

answered Jun 21, 2016 at 17:40

Sebastian Corneliu Vîrlan

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3 Comments

Mike Barwick Over a year ago

Looks good - if it works, it works. :) Not,e you don't need to use with twice like that it can accept arrays. So ->with(['edit' =>false, 'softDelete' => false]);

Sebastian Corneliu Vîrlan Over a year ago

Ohh, Good to know. :)

Mike Barwick Over a year ago

Checkity check... laravel.com/docs/5.2/views#passing-data-to-views

Waseem Hussain · Accepted Answer · 2016-06-20 15:47:27Z

-1

In Controller.php

function __construct() {
    $softDelete= true;
    $data = array('softDelete'  => $softDelete);
    view()->share($data);
}

answered Jun 20, 2016 at 15:47

Waseem Hussain

673 bronze badges

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