Can get a conversation ID from a POST request

src/controllers/conversations_controller.rs

@@ -55,5 +55,7 @@ pub fn get_list(r: &mut HttpRequestHandler) -> RequestResult {
 
 /// Get information about a single conversation
 pub fn get_single(r: &mut HttpRequestHandler) -> RequestResult {
-    r.success("Implement id")
+    let conversation_id = r.post_conv_id("conversationID")?;
+
+    r.success("do it")
 }