Adding support for more front matter types (int, float & date)

hugolib/metadata.go

@@ -70,10 +70,40 @@ func interfaceArrayToStringArray(i interface{}) []string {
 	return a
 }
 
+func interfaceToFloat64(i interface{}) float64 {
+	switch s := i.(type) {
+	case float64:
+		return s
+	case float32:
+		return float64(s)
+
+	case string:
+		v, err := strconv.ParseFloat(s, 64)
+		if err == nil {
+			return float64(v)
+		} else {
+			errorf("Only Floats are supported for this key\nErr:", err)
+		}
+
+	default:
+		errorf("Only Floats are supported for this key")
+	}
+
+	return 0.0
+}
+
 func interfaceToInt(i interface{}) int {
 	switch s := i.(type) {
 	case int:
 		return s
+	case int64:
+		return int(s)
+	case int32:
+		return int(s)
+	case int16:
+		return int(s)
+	case int8:
+		return int(s)
 	case string:
 		v, err := strconv.ParseInt(s, 0, 0)
 		if err == nil {
@@ -88,12 +118,23 @@ func interfaceToInt(i interface{}) int {
 	return 0
 }
 
+func interfaceToTime(i interface{}) time.Time {
+	switch s := i.(type) {
+	case time.Time:
+		return s
+	default:
+		errorf("Only Time is supported for this key")
+	}
+
+	return *new(time.Time)
+}
+
 func interfaceToString(i interface{}) string {
 	switch s := i.(type) {
 	case string:
 		return s
 	default:
-		errorf("Only Strings are supported for this YAML key")
+		errorf("Only Strings are supported for this key")
 	}
 
 	return ""

hugolib/page.go

@@ -330,7 +330,8 @@ func (page *Page) update(f interface{}) error {
 	m := f.(map[string]interface{})
 
 	for k, v := range m {
-		switch strings.ToLower(k) {
+		loki := strings.ToLower(k)
+		switch loki {
 		case "title":
 			page.Title = interfaceToString(v)
 		case "description":
@@ -368,8 +369,14 @@ func (page *Page) update(f interface{}) error {
 		default:
 			// If not one of the explicit values, store in Params
 			switch vv := v.(type) {
-			case string: // handle string values
-				page.Params[strings.ToLower(k)] = vv
+			case string:
+				page.Params[loki] = vv
+			case int64, int32, int16, int8, int:
+				page.Params[loki] = vv
+			case float64, float32:
+				page.Params[loki] = vv
+			case time.Time:
+				page.Params[loki] = vv
 			default: // handle array of strings as well
 				switch vvv := vv.(type) {
 				case []interface{}:
@@ -396,6 +403,12 @@ func (page *Page) GetParam(key string) interface{} {
 	switch v.(type) {
 	case string:
 		return interfaceToString(v)
+	case int64, int32, int16, int8, int:
+		return interfaceToInt(v)
+	case float64, float32:
+		return interfaceToFloat64(v)
+	case time.Time:
+		return interfaceToTime(v)
 	case []string:
 		return v
 	}

hugolib/page_test.go

@@ -141,6 +141,14 @@ Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor
 `
 )
 
+var PAGE_WITH_VARIOUS_FRONTMATTER_TYPES = `+++
+a_string = "bar"
+an_integer = 1
+a_float = 1.3
+a_date = 1979-05-27T07:32:00Z
++++
+Front Matter with various frontmatter types`
+
 func checkError(t *testing.T, err error, expected string) {
 	if err == nil {
 		t.Fatalf("err is nil.  Expected: %s", expected)
@@ -332,6 +340,24 @@ func TestShouldRenderContent(t *testing.T) {
 	}
 }
 
+func TestDifferentFrontMatterVarTypes(t *testing.T) {
+	page, _ := ReadFrom(strings.NewReader(PAGE_WITH_VARIOUS_FRONTMATTER_TYPES), "test/file1.md")
+
+	dateval, _ := time.Parse(time.RFC3339, "1979-05-27T07:32:00Z")
+	if page.GetParam("a_string") != "bar" {
+		t.Errorf("frontmatter not handling strings correctly should be %s, got: %s", "bar", page.GetParam("a_string"))
+	}
+	if page.GetParam("an_integer") != 1 {
+		t.Errorf("frontmatter not handling ints correctly should be %s, got: %s", "1", page.GetParam("an_integer"))
+	}
+	if page.GetParam("a_float") != 1.3 {
+		t.Errorf("frontmatter not handling floats correctly should be %s, got: %s", 1.3, page.GetParam("a_float"))
+	}
+	if page.GetParam("a_date") != dateval {
+		t.Errorf("frontmatter not handling dates correctly should be %s, got: %s", dateval, page.GetParam("a_date"))
+	}
+}
+
 func TestDegenerateInvalidFrontMatterLeadingWhitespace(t *testing.T) {
 	_, err := ReadFrom(strings.NewReader(INVALID_FRONT_MATTER_LEADING_WS), "invalid/front/matter/leading/ws")
 	if err != nil {