Add customer language - #78 (#211)

* add customer language and pass it to mailchimp api - #78

* add customer language and pass it to mailchimp api - #78

* add customer language and pass it to mailchimp api - #78

* add customer language and pass it to mailchimp api - #78

* remove type hint

Author: bkollmann

doc/02_Installation/README.md

@@ -50,6 +50,7 @@ Following options to prepare the customer class are available:
   * `zip`: input field
   * `city`: input field
   * `countryCode`: country selection
+  * `customerLanguage`: language selection
   * `email`: email field
   * `phone`: input field
   * `manualSegments`: objects relation to `CustomerSegments` or objects with metadata to `CustomerSegments` with 

install/class_source/optional/class_Customer_export.json

@@ -215,6 +215,35 @@
                                                 "visibleGridView": false,
                                                 "visibleSearch": false,
                                                 "defaultValueGenerator": ""
+                                            },
+                                            {
+                                                "fieldtype": "language",
+                                                "onlySystemLanguages": false,
+                                                "options": null,
+                                                "width": "",
+                                                "defaultValue": null,
+                                                "optionsProviderClass": null,
+                                                "optionsProviderData": null,
+                                                "queryColumnType": "varchar",
+                                                "columnType": "varchar",
+                                                "columnLength": 190,
+                                                "phpdocType": "string",
+                                                "dynamicOptions": false,
+                                                "name": "customerLanguage",
+                                                "title": "Customer Language",
+                                                "tooltip": "",
+                                                "mandatory": false,
+                                                "noteditable": false,
+                                                "index": false,
+                                                "locked": false,
+                                                "style": "",
+                                                "permissions": null,
+                                                "datatype": "data",
+                                                "relationType": false,
+                                                "invisible": false,
+                                                "visibleGridView": false,
+                                                "visibleSearch": false,
+                                                "defaultValueGenerator": ""
                                             }
                                         ],
                                         "locked": false

src/Model/CustomerInterface.php

@@ -164,6 +164,11 @@ public function getPhone(): ?string;
      */
     public function setPhone(?string $phone);
 
+    /**
+     * @return string|null
+     */
+    public function getCustomerLanguage();
+
     /**
      * @return CustomerSegmentInterface[]|ObjectMetadata[]
      */

src/Model/Traits/CustomerTrait.php

@@ -116,4 +116,8 @@ public function needsExportByNewsletterProviderHandler(NewsletterProviderHandler
     {
         return $this->getPublished() && $this->getActive();
     }
+
+    public function getCustomerLanguage() {
+        return null;
+    }
 }

src/Newsletter/ProviderHandler/Mailchimp.php

@@ -566,6 +566,10 @@ public function buildEntry(MailchimpAwareCustomerInterface $customer)
             'merge_fields' => $mergeFields
         ];
 
+        if ($language = $customer->getCustomerLanguage()) {
+            $entry['language'] = $language;
+        }
+
         if ($interests = $this->buildCustomerSegmentData($customer)) {
             $result['interests'] = $interests;
         }