Add inline option of markdown filter

Fix #197

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## 0.3.1 (unreleased)
 
 - Update Tera to fix regression
+- Add option for inline in markdown filter
 
 ## 0.3.0 (2018-01-25)
 

components/templates/src/filters.rs

@@ -5,13 +5,25 @@ use pulldown_cmark as cmark;
 use tera::{Value, to_value, Result as TeraResult};
 
 
-pub fn markdown(value: Value, _: HashMap<String, Value>) -> TeraResult<Value> {
+pub fn markdown(value: Value, args: HashMap<String, Value>) -> TeraResult<Value> {
     let s = try_get_value!("markdown", "value", String, value);
+    let inline = match args.get("inline") {
+        Some(val) => try_get_value!("markdown", "inline", bool, val),
+        None => false,
+    };
 
     let mut html = String::new();
     let parser = cmark::Parser::new(&s);
     cmark::html::push_html(&mut html, parser);
 
+    if inline {
+        html = html
+            .trim_left_matches("<p>")
+            // pulldown_cmark finishes a paragraph with `</p>\n`
+            .trim_right_matches("</p>\n")
+            .to_string();
+    }
+
     Ok(to_value(&html).unwrap())
 }
 
@@ -50,6 +62,15 @@ mod tests {
         assert_eq!(result.unwrap(), to_value(&"<h1>Hey</h1>\n").unwrap());
     }
 
+    #[test]
+    fn markdown_filter_inline() {
+        let mut args = HashMap::new();
+        args.insert("inline".to_string(), to_value(true).unwrap());
+        let result = markdown(to_value(&"Using `map`, `filter`, and `fold` instead of `for`").unwrap(), args);
+        assert!(result.is_ok());
+        assert_eq!(result.unwrap(), to_value(&"Using <code>map</code>, <code>filter</code>, and <code>fold</code> instead of <code>for</code>").unwrap());
+    }
+
     #[test]
     fn base64_encode_filter() {
         // from https://tools.ietf.org/html/rfc4648#section-10

docs/content/documentation/templates/overview.md

@@ -30,6 +30,13 @@ Gutenberg adds a few filters, in addition of the ones already present in Tera.
 Converts the given variable to HTML using Markdown. This doesn't apply any of the
 features that Gutenberg adds to Markdown: internal links, shortcodes etc won't work.
 
+By default, the filter will wrap all text into a paragraph. To disable that, you can
+pass `true` to the inline argument:
+
+```jinja2
+{{ some_text | markdown(inline=true) }}
+```
+
 ### base64_encode
 Encode the variable to base64.