Enhanced Blade Compilation with String Templates
The Blade templating engine in Laravel can be extended to allow for compilation of blade templates from strings, rather than solely relying on view files. This enhanced functionality provides flexibility in dynamic template generation and rendering.
As an example, consider the following code snippet:
<code class="php">$string = '<h2>{{ $name }}</h2>';
echo Blade::compile($string, array('name' => 'John Doe')); </code>
Here, we are attempting to compile a blade template from a string, however, the default Blade::compile() method is not designed to handle such scenarios.
To overcome this limitation, a solution involves extending the BladeCompiler class. Here's a custom BladeCompiler class that incorporates the necessary functionality:
<code class="php">namespace Laravel\Enhanced;
use Illuminate\View\Compilers\BladeCompiler as LaravelBladeCompiler;
class BladeCompiler extends LaravelBladeCompiler {
/**
* Compile blade template with passing arguments.
*
* @param string $value HTML-code including blade
* @param array $args Array of values used in blade
* @return string
*/
public function compileWiths($value, array $args = array())
{
$generated = parent::compileString($value);
ob_start() and extract($args, EXTR_SKIP);
// Evaluate the compiled string
try
{
eval('?>'.$generated);
}
catch (\Exception $e)
{
ob_get_clean(); throw $e;
}
$content = ob_get_clean();
return $content;
}
}</code>
This custom compiler provides a compileWiths() method that accepts a blade template as a string and additional arguments as an array. It compiles the string using the parent class's compileString() method and evaluates the generated code within a catcher to prevent WSOD errors.
By utilizing this extended BladeCompiler, you can now dynamically compile and render blade templates from strings, enhancing your application's flexibility.
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