Merge pull request #57 from tjwalch/master

Template tags to add bower installed files automatically.

djangobower/context_processors.py

+# -*- coding: utf-8 -*-
+import os.path
+import json
+import six
+from django.conf import settings
+from django.utils.datastructures import OrderedSet
+
+
+def read_mains():
+    for component in settings.BOWER_INSTALLED_APPS:
+        try:
+            with open(os.path.join(
+                    settings.BOWER_COMPONENTS_ROOT,
+                    'bower_components',
+                    component,
+                    'bower.json')) as bower_json:
+                main = json.load(bower_json).get('main')
+                if isinstance(main, six.string_types):
+                    yield '%s/%s' % (component, main)
+                elif isinstance(main, list):
+                    for m in main:
+                        yield '%s/%s' % (component, m)
+        except FileNotFoundError:
+            continue
+
+
+def bower_components(request):
+    return {
+        'bower_components': OrderedSet([main for main in read_mains()]),
+    }

djangobower/templatetags/__init__.py

+# -*- coding: utf-8 -*-

djangobower/templatetags/bower.py

+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+import os.path
+from django import template
+from django.templatetags import static
+
+
+register = template.Library()
+
+
+style_template = template.Template(
+    """{% for filename in files %}
+       <link href="{{filename}}" rel="stylesheet" type="text/css">
+       {% endfor %}"""
+)
+
+
+script_template = template.Template(
+    """{% for filename in files %}
+       <script src="{{filename}}" type="text/javascript"></script>
+       {% endfor %}"""
+)
+
+
+def tags(context, args, type):
+    components = (
+        [arg for arg in args if arg in context['bower_components']]
+        if args else context['bower_components']
+    )
+    files = []
+    for component in components:
+        files.append(component)
+        context['bower_components'].remove(component)
+    return {'files': [
+        static.static(f)
+        for f in files
+        if os.path.splitext(f)[1][1:] == type
+    ]}
+
+
+@register.inclusion_tag(style_template, takes_context=True)
+def bower_styles(context, *args):
+    return tags(context, args, 'css')
+
+
+@register.inclusion_tag(script_template, takes_context=True)
+def bower_scripts(context, *args):
+    return tags(context, args, 'js')