slugify-filter and tests added.

.gitignore

@@ -21,3 +21,4 @@ _testmain.go
 
 *.exe
 *.test
+.idea

README.md

@@ -13,6 +13,7 @@ All filters/tags will be registered automatically.
 ## Filters
 
   - **markdown** (parses markdown text and outputs HTML; **hint**: use the **safe**-filter to make the output not being escaped)
+  - **slugify** (creates a slug for a given input)
 
 ## Tags
 

filters.go

@@ -3,13 +3,19 @@ package pongo2addons
 import (
 	"github.com/flosch/pongo2"
 
+	"github.com/extemporalgenome/slug"
 	"github.com/russross/blackfriday"
 )
 
 func init() {
 	pongo2.RegisterFilter("markdown", filterMarkdown)
+	pongo2.RegisterFilter("slugify", filterSlugify)
 }
 
 func filterMarkdown(in *pongo2.Value, param *pongo2.Value) (*pongo2.Value, error) {
 	return pongo2.AsValue(string(blackfriday.MarkdownCommon([]byte(in.String())))), nil
 }
+
+func filterSlugify(in *pongo2.Value, param *pongo2.Value) (*pongo2.Value, error) {
+	return pongo2.AsValue(slug.Slug(in.String())), nil
+}

filters_test.go

@@ -0,0 +1,26 @@
+package pongo2addons
+
+import (
+	"testing"
+
+	. "gopkg.in/check.v1"
+
+	"github.com/flosch/pongo2"
+)
+
+// Hook up gocheck into the "go test" runner.
+func Test(t *testing.T) {
+	TestingT(t)
+}
+
+type TestSuite1 struct{}
+
+var _ = Suite(&TestSuite1{})
+
+func (s *TestSuite1) TestFilters(c *C) {
+	// Markdown
+	c.Assert(pongo2.RenderTemplateString("{{ \"**test**\"|markdown|safe }}", nil), Equals, "<p><strong>test</strong></p>\n")
+
+	// Slugify
+	c.Assert(pongo2.RenderTemplateString("{{ \"this is ä test!\"|slugify }}", nil), Equals, "this-is-a-test")
+}