Implement `IntoResponse` for `Template`, allowing them to be used in `gotham` handlers.

2 files changed, 20 insertions, 0 deletions

diff --git a/askama_derive/Cargo.toml b/askama_derive/Cargo.toml
index 7096597..461a1f8 100644
--- a/askama_derive/Cargo.toml
+++ b/askama_derive/Cargo.toml
@@ -16,6 +16,7 @@ proc-macro = true
 iron = []
 rocket = []
 actix-web = []
+gotham = []
 
 [dependencies]
 askama_shared = { version = "0.7.2", path = "../askama_shared" }
diff --git a/askama_derive/src/generator.rs b/askama_derive/src/generator.rs
index 61a82bd..b30b040 100644
--- a/askama_derive/src/generator.rs
+++ b/askama_derive/src/generator.rs
@@ -92,6 +92,9 @@ impl<'a> Generator<'a> {
         if cfg!(feature = "actix-web") {
             self.impl_actix_web_responder(&mut buf);
         }
+        if cfg!(feature = "gotham") {
+            self.impl_gotham_into_response(&mut buf);
+        }
         buf.buf
     }
 
@@ -217,6 +220,22 @@ impl<'a> Generator<'a> {
         buf.writeln("}");
     }
 
+    // Implement gotham's `IntoResponse`.
+    fn impl_gotham_into_response(&mut self, buf: &mut Buffer) {
+        self.write_header(buf, "::askama::gotham::IntoResponse", None);
+        buf.writeln(
+            "fn into_response(self, _state: &::askama::gotham::State)\
+             -> ::askama::gotham::Response<::askama::gotham::Body> {",
+        );
+        let ext = match self.input.path.extension() {
+            Some(s) => s.to_str().unwrap(),
+            None => "txt",
+        };
+        buf.writeln(&format!("::askama::gotham::respond(&self, {:?})", ext));
+        buf.writeln("}");
+        buf.writeln("}");
+    }
+
     // Writes header for the `impl` for `TraitFromPathName` or `Template`
     // for the given context struct.
     fn write_header(