Hello BlogController!
<form name="blog" method="post" enctype="multipart/form-data"><div id="blog"><div><label for="blog_photo" class="required">Photo</label><input type="file" id="blog_photo" name="blog[photo]" required="required" /></div><div><label for="blog_title" class="required">Title</label><input type="text" id="blog_title" name="blog[title]" required="required" maxlength="255" /></div><div><label for="blog_description" class="required">Description</label><input type="text" id="blog_description" name="blog[description]" required="required" maxlength="2048" /></div><div><label for="blog_resume" class="required">Resume</label><input type="text" id="blog_resume" name="blog[resume]" required="required" maxlength="2048" /></div><div><label for="blog_article" class="required">Article</label><textarea id="blog_article" name="blog[article]" required="required"></textarea></div><div><label for="blog_metadata">Metadata</label><input type="text" id="blog_metadata" name="blog[metadata]" maxlength="255" /></div><div><label for="blog_metadata_title">Metadata title</label><input type="text" id="blog_metadata_title" name="blog[metadata_title]" maxlength="512" /></div><input type="hidden" id="blog__token" name="blog[_token]" value="71b1eb9.JsQOtXj1QYcPohWvn1dVLR85LXbpDX7JfE2E8JqONrw.TJ5W2T2RC_M-wULH9QQffChqaiyDNCuEDnnTgujBB9N2rUmHNr8P1kuaZg" /></div></form>
<style>
    .example-wrapper { margin: 1em auto; max-width: 800px; width: 95%; font: 18px/1.5 sans-serif; }
    .example-wrapper code { background: #F5F5F5; padding: 2px 6px; }
</style>

<div class="example-wrapper">
    <h1>Hello </h1>

    This friendly message is coming from:
    <ul>
        <li>Your controller at <code><a href="">src/Controller/BlogController.php</a></code></li>
        <li>Your template at <code><a href="">templates/blog/index.html.twig</a></code></li>
    </ul>
</div>