Add title template function

docs/docs/views/templates/functions/string.md

@@ -174,3 +174,16 @@ This method accepts all data types, but it does convert them to their string rep
     ```
     1 two three
     ```
+
+### `title`
+
+Converts the string to "Title Case" formatting.
+
+=== "Template"
+    ```erb
+    <%= "hello world".title %>
+    ```
+=== "Output"
+    ```
+    Hello World
+    ```

rwf/src/lib.rs

@@ -138,6 +138,16 @@ pub fn capitalize(string: &str) -> String {
     uppercase
 }
 
+/// Convert string to title case.
+pub fn title_case(string: &str) -> String {
+    string
+        .split(" ")
+        .into_iter()
+        .map(|s| capitalize(s))
+        .collect::<Vec<_>>()
+        .join(" ")
+}
+
 /// Convert string to PascalCase (often confused with camelCase).
 pub fn pascal_case(string: &str) -> String {
     string

rwf/src/view/template/lexer/value.rs

@@ -261,6 +261,7 @@ impl Value {
                 "capitalize" => Value::String(crate::capitalize(&value)),
                 "camelize" | "to_PascalCase" => Value::String(crate::pascal_case(&value)),
                 "underscore" | "to_snake_case" => Value::String(crate::snake_case(&value)),
+                "title" => Value::String(crate::title_case(&value)),
                 "urlencode" => Value::String(crate::http::urlencode(&value)),
                 "urldecode" => Value::String(crate::http::urldecode(&value)),
                 "len" => Value::Integer(value.len() as i64),
@@ -719,4 +720,12 @@ mod test {
             .unwrap();
         assert_eq!(v, Value::String("Hey Alice, this is Alice".into()));
     }
+
+    #[test]
+    fn test_title_case() {
+        let v = Value::String("hello world, how are you?".into())
+            .call("title", &[], &Context::default())
+            .unwrap();
+        assert_eq!(v, Value::String("Hello World, How Are You?".into()))
+    }
 }