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Ejemplo 4

📖 Example 4 - Templates

This example shows how we can use the @view directive to load templates. This makes it much easier to program repetitive views across different pages: Headers, Footers, Cards, ..., different views that we'll use as templates!

Controller: example4.prg

function main() 

    local aData := {;
        { "Harbour", "Open-source language derived from Clipper, focused on business applications and databases with classic syntax.", .T. },;
        { "PHP", "Server-side scripting language designed specifically for web development and building dynamic applications.", .F. },;
        { "Python", "High-level language with clean, readable syntax, widely used in data science, backend, and automation.", .F. },;
        { "Rust", "Systems language focused on safety, performance, and concurrency without the need for a garbage collector.", .F. },;
        { "Kotlin", "Modern JVM language that combines functional and object-oriented programming with concise, safe syntax.", .F. };
    }

    local hUrls := {=>}
        hUrls[ 'Harbour' ] := 'https://harbour.github.io/' 
        hUrls[ 'PHP' ] := 'https://www.php.net/' 
        hUrls[ 'Python' ] := 'https://www.python.org/' 
        hUrls[ 'Rust' ] := 'https://rust-lang.org/es/' 
        hUrls[ 'Kotlin' ] := 'https://kotlinlang.org/'                  

return UView( 'example4.html', aData, hUrls )

View: example4.html

@args mydata, urls

<!DOCTYPE html>
<html lang="es">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Example 4</title>

  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet">

</head>

<style>
    .card {
      box-shadow: 5px 5px 5px black;
    }

    footer {
        position: fixed;
        bottom: 0;
        width: 100%;
    }
</style>

<body class="d-flex flex-column min-vh-10">

@view 'example_header.html'

<div class="container"> 
    <h1 class="text-secondary mt-3">Templates Example</h1>
    <hr>
    <div class="row g-4">

        @for n := 1  to len( myData )
            @view "example_card.html", myData[n], urls                  
        @next

    </div>  

</div>
<br>    

@view 'example_footer.html'

</body>
</html>

Supporting Views

Header - example_header.html

<nav class="navbar bg-dark border-bottom border-body" data-bs-theme="dark">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Using views...</a>
  </div>
</nav>

<footer class="bg-dark text-white pt-4 mt-auto mt-5">
    <div class="container">
        <!-- Navbar inside the footer -->
        <nav class="navbar navbar-expand-lg navbar-dark bg-dark p-0">
            <div class="container-fluid px-0">
                <a class="navbar-brand" href="#">My Site</a>

                <div class="collapse navbar-collapse" id="footerNav">
                    <ul class="navbar-nav ms-auto mb-2 mb-lg-0">
                        <li class="nav-item">
                            <a class="nav-link active" aria-current="page" href="#">Home</a>
                        </li>
                        <li class="nav-item">
                            <a class="nav-link" href="#">About</a>
                        </li>
                        <li class="nav-item">
                            <a class="nav-link" href="#">Services</a>
                        </li>
                        <li class="nav-item">
                            <a class="nav-link" href="#">Contact</a>
                        </li>
                        <li class="nav-item">
                            <a class="nav-link" href="#">Privacy Policy</a>
                        </li>
                    </ul>
                </div>
            </div>
        </nav>
        <hr class="my-3">
        <div class="text-center pb-3">
            <small>&copy; 2026 My Site. All rights reserved.</small>
        </div>
    </div>
</footer>

Card - example_card.html

@args oItem, urls

<div class="col-12 col-sm-6 col-md-4">      
  <div class="card">

        @if oItem[3] 
            <div class="card-body bg-success bg-opacity-25">

                <b>⭐ {{ oItem[1]}}</b><hr>
                <br>
                {{ oItem[2] }}

                <br>
                <div class="text-end">
                    <a href="{!! GetUrl( oItem[1] ) !!}" class="btn btn-outline-success btn-sm rounded-pill px-3 mt-2">
                        {{ GetUrl( oItem[1] ) }}
                    </a>                                                
                </div>

            </div>      

        @else 

            <div class="card-body bg-dark bg-opacity-25">
                <b>{{ oItem[1]}}</b><hr>
                <br>
                {{ oItem[2] }}              

                <br>
                <div class="text-end">
                    <a href="{!! GetUrl( oItem[1] ) !!}" class="btn btn-outline-dark btn-sm rounded-pill px-3 mt-2">
                        {{ GetUrl( oItem[1] ) }}
                    </a>                                                
                </div>  

            </div>                      

        @endif 

  </div>
</div>

@prg 

    function GetUrl( uKey )

        local cUrl := HB_HGetDef( urls, uKey, '' )

    return cUrl

@endprg

Result

image