From c7cab4dee1a7d5dae346b3f425b666b8cd8d2afb Mon Sep 17 00:00:00 2001
From: Chavez <matthew@el-chavez.me>
Date: Thu, 11 May 2017 11:09:28 -0700
Subject: [PATCH] Fix build parameters POST body

- Restore build_parameters key in build_branch POST body
---
 lib/circleci/project.rb | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/lib/circleci/project.rb b/lib/circleci/project.rb
index 2664908..127cd3f 100644
--- a/lib/circleci/project.rb
+++ b/lib/circleci/project.rb
@@ -277,11 +277,13 @@ def build
     #
     # Build the latest push for this branch of a specific project
     #
-    # @param branch   [String] - Name of branch
-    # @param params   [Hash] - Optional params to send for building
-    # @param body     [Hash] - Optional post body with build parameters
-    # @return         [CircleCi::Response] - Response object
-    def build_branch(branch, params = {}, body = {})
+    # @param branch             [String] - Name of branch
+    # @param params             [Hash] - Optional params to send for building
+    # @param build_parameters   [Hash] - Optional post body with build parameters
+    # @return                   [CircleCi::Response] - Response object
+    def build_branch(branch, params = {}, build_parameters = {})
+      body = {}
+      body['build_parameters'] = build_parameters unless build_parameters.empty?
       CircleCi.request(@conf, "/project/#{username}/#{project}/tree/#{branch}", params).post(body)
     end