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Selmer Template Engine for Clojure

A fast, Django-inspired template library for Clojure developers. Build HTML pages, emails, and reusable layouts with variables, filters, tags, includes, and inheritance.

Developer library, not a visual theme. Selmer is source code you add to a Clojure project — not a drag-and-drop website builder. This Brokie edition is based on upstream Selmer 1.13.4 (yogthos/Selmer, EPL-1.0) with community bug fixes applied. Brokie does not claim authorship of the original library.

View upstream Selmer on GitHub See syntax example

HTML & email templatesRender pages and messages from reusable template files

Layouts & partials{% extends %}, {% block %}, and {% include %} composition

Control flow{% if %}, {% for %}, {% with %}, and custom tags

Clojure integrationrender, render-file, custom filters, and Leiningen/tools.deps ready

Quick example

(require '[selmer.parser :as selmer])

(selmer/render "Hello {{name|capitalize}}!"
               {:name "world"})
;;=> "Hello World!"

(selmer/render-file "home.html" {:items ["Clojure" "Selmer" "Templates"]})

Template syntax

<ul>
{% for item in items %}
  <li>{{ item|title }}</li>
{% empty %}
  <li>No items yet.</li>
{% endfor %}
</ul>

Brokie edition — community fixes included

#306 known-variables resolves variables embedded in tag arguments like {% if {{var}} %}.
#227 default filter with @lookup fallbacks returns empty when the lookup is missing.
#337 Configurable per-render escape function via selmer.util/*escape-fn* (JSON, URL, HTML).
#331 Multi-line {% include %} tags supported for readable partials.