Can set conversation image

src/data/base_request_handler.rs

@@ -615,6 +615,18 @@ pub trait BaseRequestHandler {
         Ok(membership)
     }
 
+    /// Get information about a conversation included in the request. The user must be an admin
+    /// of the target conversation
+    fn post_conv_admin(&mut self, name: &str) -> ResultBoxError<ConversationMember> {
+        let conv = self.post_conv(name)?;
+
+        if !conv.is_admin {
+            self.forbidden("You are not an administrator of this conversation!".to_string())?;
+        }
+
+        Ok(conv)
+    }
+
     /// Get the ID
     fn post_group_id(&mut self, name: &str) -> ResultBoxError<GroupID> {
         let group_id = GroupID::new(self.post_u64(name)?);