What Is Laravel Render() Method For

what is laravel render() method for?

Given that you've tagged the question with Blade, I'll assume you mean render inside Laravel's View class.

Illuminate\View\View::render() returns the string contents of the view. It is also used inside the class' __toString() method which allows you to echo a View object.

// example.blade.php
Hello, World!

// SomeController.php
$view = view('example');
echo $view->render(); // Hello, World!
echo $view;  // Hello, World!

Laravel typically handles this for you, I.e. calls render or uses the object as a string when necessary.

Blade's @include('viewname') directive will load the view file and call the render method behind the scenes for example.

You may use it yourself when you want to get the compiled view to perform some subsequent action. Occasionally I have called render explicitly rather than to string if the view itself is causing an exception and in PHP explains

Fatal error: Method a::__toString() must not throw an exception in /index.php on line 12

Calling render() in the above case gives a more useful error message.

Livewire Mount vs. Render

The mount() method is what's called a "lifecycle-hook". There are a few more of these kind of methods in Livewire, which are outlined in the official documentation - https://laravel-livewire.com/docs/2.x/lifecycle-hooks - while the render() is the final method that's called to render the actual view.

The mount() method is the construct to the component. This is where you pass in the data that the component needs. This method is only called once, on the initialization of the component, which means its also typically where you set up initial values that aren't constants.

However, since public properties of a Livewire component can only be collections, the instance of a model, arrays or native PHP types like string and integer, you can't pass more "advanced" types that relies on a state - for example like the pagination of a query of models.

That is why you would sometimes need to pass data to the component via the render() method, like you would when returning data in a normal Laravel controller. Another reason to pass data here is that the data is not exposed in JavaScript, like the public properties of the component is.

The render() method is called at the end of every lifecycle request, but before the component dehydrates. Official documentation has more detailed information https://laravel-livewire.com/docs/2.x/rendering-components#render-method - the data defined here isn't a property of the class, and thereby not accessible in the other methods in the component.

So to answer your question, it depends on what type of data you are passing, if the data should be accessible in the other methods in the class or if it's sensitive such that it shouldn't be visible in the JavaScript object attached to the component.

Render Laravel 7 component programmatically

I use this, it also works with anonymous component. Put this in your helper file.

/**
 * Render a blade component.
 * @param string $name Component name, exclude component folder (i.e use "card" instead of "components.card")
 * @param array $props Component properties
 * @param array $attributes Component attributes
 * @return \Illuminate\Contracts\View\View
 */
function viewComponent($name, $props = [], $attributes = []) {
    $className = collect(explode('.', $name))->map(function($part) {
        return \Str::studly($part);
    })->join('\\');
    $className = "App\\View\\Components\\{$className}";
    if(class_exists($className)) {
        $reflection = (new \ReflectionClass($className))->getConstructor();
        $parameters = [];
        foreach ($reflection->getParameters() as $param) {
            $parameters[] = $props[$param->name] ?? $param->getDefaultValue();
        }
        $component = new $className(...$parameters);
        $component->withAttributes($attributes);
        return $component->render()->with($component->data());
    }

    $props['attributes'] = new \Illuminate\View\ComponentAttributeBag($attributes);
    return view("components.$name", $props);
}

Usage

viewComponent('input', [
    'name' => 'name',
    'title' => 'My Field',
]);

// if you want custom attribute
viewComponent('input', [
    'name' => 'name',
    'title' => 'My Field',
], [
    'autocomplete' => 'off',
    'data-custom' => 'custom attribute',
]);

How to render view usin Laravel blade?

if you save your template into resources/views/template.blade.php,
you should call view method like this:

Route::get('/', function () {
    return view('template');
});

if you save your template into other folder inside resources/views, like resources/views/test/template.blade.php,
you should call view method like this:

Route::get('/', function () {
    return view('test.template');
});

Laravel 9 Inline Blade Template Rendering; Rendering constant instead of variables

I think you will have to manipulate the templates, before sending output to blade.

Laravel has many helpers to do things like that.

use Illuminate\Support\Str;
 
$string = '{{first_name}} {{last_name}}';
 
$replaced = Str::replace('{{', '{{$', $string);

// in $replaced you'll have '{{$first_name}} {{$last_name}}'

Above code will do the job.

render data from controller before view

You might want to use the render method from a Illuminate\View\View object:

class QuestionsController
{
    public function show(Question $question)
    {
        $content = view('questions.show', compact('question'))->render();

        // Do something with the $content string.
    }
}

No `render` method found on the returned component instance: you may have forgotten to define `render` React-Laravel

There is a typo, you spell rander() instead of render() in the TableRow component

Is it possible to pass blade directive like @if into a string from laravel

You have to use Concatenation in laravel for parsing string:

    foreach ($categories as $category) {
                $output .=
                    '<tr>
    <td>' . $i++ . '</td>
    <td><img src="' . asset($category->photo) . '" class="img-fluid" style="width: 170px; object-fit: cover;"></td>
    <td>' . $category->name . '</td>
    <td>' . $category->category_code . '</td>
    <td><a href="' . route("category.edit", $category->id) . '" class="btn btn-warning">
        <i class="icofont-ui-settings icofont-1x"></i>
        </a>';
        if($delete == "yes"){
            $output .= '<form action="' . route("category.destroy", $category->id) . '" method="POST" class="d-inline-block" onsubmit="return confirm("Are you sure to delete the item?")">';
            $output .= '<input type="hidden" name="_token" value="'.csrf_token().'">';
            $output .= '<input type="hidden" name="_method" value="DELETE"><button class="btn btn-outline-danger" type="submit"><i class="icofont-close icofont-1x"></i></button>
        </form>';
        }
                $output .='</td></tr>';
            }

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