From 98d436ccc8fc53e0b0c05fe81fb7c5b98c483677 Mon Sep 17 00:00:00 2001
From: Dimitri Roche <dimroc@gmail.com>
Date: Tue, 12 Dec 2017 11:50:28 -0500
Subject: [PATCH] Allow no params for the EthBytes32 adapter

---
 models/task.go                            | 9 ++++++++-
 web/controllers/fixtures/create_jobs.json | 2 +-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/models/task.go b/models/task.go
index 17e6f77e4cc..04fde4e79ba 100644
--- a/models/task.go
+++ b/models/task.go
@@ -36,7 +36,7 @@ func (self Task) Adapter() (adapters.Adapter, error) {
 		return temp, err
 	case "EthBytes32":
 		temp := &adapters.EthBytes32{}
-		err := json.Unmarshal(self.Params, temp)
+		err := unmarshalOrEmpty(self.Params, temp)
 		return temp, err
 	case "EthSendTx":
 		temp := &adapters.EthSendTx{}
@@ -48,3 +48,10 @@ func (self Task) Adapter() (adapters.Adapter, error) {
 
 	return nil, fmt.Errorf("%s is not a supported adapter type", self.Type)
 }
+
+func unmarshalOrEmpty(params json.RawMessage, dst interface{}) error {
+	if len(params) > 0 {
+		return json.Unmarshal(params, dst)
+	}
+	return nil
+}
diff --git a/web/controllers/fixtures/create_jobs.json b/web/controllers/fixtures/create_jobs.json
index dcfa11375cb..85418beb293 100644
--- a/web/controllers/fixtures/create_jobs.json
+++ b/web/controllers/fixtures/create_jobs.json
@@ -2,7 +2,7 @@
   "tasks": [
     { "type": "HttpGet", "params": { "endpoint": "https://bitstamp.net/api/ticker/" } },
     { "type": "JsonParse", "params": { "path": ["last"] } },
-    { "type": "EthBytes32", "params": {} },
+    { "type": "EthBytes32" },
     { "type": "EthSendTx", "params": { "address": "0x356a04bce728ba4c62a30294a55e6a8600a320b3", "functionID": "12345679" } }
   ],
   "schedule": {"endAt": "2019-11-27T23:05:49Z", "runAt": ["2018-11-27T23:05:49Z"], "cron": "* 7 * * *"},