Ensure Leads()->add() post as JSON

src/Http/PipedriveClient.php

@@ -5,6 +5,7 @@
 use GuzzleHttp\Client as GuzzleClient;
 use GuzzleHttp\Psr7\Request as GuzzleRequest;
 use GuzzleHttp\Exception\BadResponseException;
+use GuzzleHttp\RequestOptions;
 
 class PipedriveClient implements Client
 {
@@ -109,6 +110,11 @@ public function post($url, $parameters = [])
             $parameters = $this->multipart($parameters);
         }
 
+        if (isset($parameters['json'])) {
+            $form = RequestOptions::JSON;
+            $parameters = array_except($parameters, RequestOptions::JSON);
+        }
+
         return $this->execute($request, [$form => $parameters]);
     }
 

src/Resources/Basics/Resource.php

@@ -30,6 +30,13 @@ abstract class Resource
      */
     protected $disabled = [];
 
+    /**
+     * Should requests to add POST as JSON?
+     *
+     * @var bool
+     */
+    protected $addPostedAsJson = false;
+
     /**
      * Endpoint constructor.
      *
@@ -72,6 +79,10 @@ public function find($id)
      */
     public function add(array $values)
     {
+        if ($this->addPostedAsJson) {
+            $values['json'] = true;
+        }
+
         return $this->request->post('', $values);
     }
 

src/Resources/Leads.php

@@ -14,6 +14,8 @@ class Leads extends Resource
      */
     protected $disabled = ['deleteBulk'];
 
+    protected $addPostedAsJson = true;
+
     /**
      * Get all labels.
      *