Default Values

Default Values

Use {{var|default:"fallback"}} to provide a value when a variable is missing or empty.

Full profile:

Only name provided:

Empty data — all defaults:

<?php

# require the templating library
require '../vendors/ViewFish/viewfish.php';

# instantiate a ViewFish object
$T = new ViewFish\viewfish();

# set the template path
$T->set_template_path(__DIR__.'/../templates/');

# load the template
$template = $T->load_template("demo9");

# Full profile
$profile1 = [
    'name'    => 'Charlie Bucket',
    'role'    => 'Special Agent',
    'city'    => 'walla walla, Washington',
    'country' => 'united states',
    'bio'     => 'Young boy, fond of candy.',
];

# Sparse profile — defaults will fill in
$profile2 = [
    'name' => 'Williaam Wonka',
    'role' => 'Chocolate Manufacturer',
];

# Empty profile — all defaults
$profile3 = [];

echo "<h4>Default Values</h4>";
echo "<p>Use <code>{{var|default:\"fallback\"}}</code> to provide a value when a variable is missing or empty.</p><hr>";

echo "<h5>Full profile:</h5>";
echo $T->render($template, $profile1);

echo "<h5>Only name provided:</h5>";
echo $T->render($template, $profile2);

echo "<h5>Empty data — all defaults:</h5>";
echo $T->render($template, $profile3);

<div class="card mb-3">
    <div class="card-body">
        <h5>{{name|default:"Anonymous User"}}</h5>
        <p><strong>Role:</strong> {{role|default:"Guest"}}</p>
        <p><strong>Location:</strong> {{city|default:"Unknown"|ucwords}}, {{country|default:"Earth"|ucwords}}</p>
        <p><strong>Bio:</strong> {{bio|default:"No bio provided."}}</p>
    </div>
</div>