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Inheritance

IwaiEngine supports file-based template composition through {% include %}, {% extends %}, and {% block %}.

Include

# views/list.iwai
<ul>{% include "item.iwai" %}</ul>
# views/item.iwai
<li>{{ item|upper }}</li>

The included template receives the current render context plus any visible local variables defined with {% set %}.

Extends and Blocks

# views/base.iwai
<html>
  <body>
    {% block header %}<h1>Base</h1>{% end %}
    {% block content %}<p>Base content</p>{% end %}
  </body>
</html>
# views/page.iwai
{% extends "base.iwai" %}
{% block content %}
<p>Hello {{ name }}</p>
{% end %}
using IwaiEngine
using Base.Filesystem: mktempdir

mktempdir() do dir
    write(joinpath(dir, "base.iwai"), """
<html>
  <body>
    {% block content %}<p>Base content</p>{% end %}
  </body>
</html>
""")
    write(joinpath(dir, "page.iwai"), """
{% extends "base.iwai" %}
{% block content %}
<p>Hello {{ name }}</p>
{% end %}
""")

    tpl = IwaiEngine.load(joinpath(dir, "page.iwai"))
    println(tpl((name = "Iwai",)))
end
<html>
  <body>

<p>Hello Iwai</p>

  </body>
</html>