Updated REST API Custom Fields (markdown)

REST-API-Custom-Fields.md

@@ -1,4 +1,20 @@
-## In Wekan code
+1) Login as Admin user as Form Data to get Bearer token
+https://github.com/wekan/wekan/wiki/REST-API#example-call---as-form-data
+
+2) There needs to be Custom Field added to board
+https://wekan.github.io/api/v3.46/#wekan-rest-api-customfields
+
+3) Custom Field at board and card will have same `_id`
+https://wekan.github.io/api/v3.46/#put_board_list_card
+
+4) When writing Custom Field value to card, like text field, content type needs to be "application/json" and the string needs to be an array:
+``
+-d '{ "customFields" : [ { "_id" : "oZHkpcaxDHnbkbqGo", "value" : "foobar" } ] }'
+```
+5) For other types of Custom Fields, you can look at Custom Field structure from MongoDB database with [nosqlbooster](https://nosqlbooster.com/downloads) that can also login through ssh to server Wekan snap MongoDB port 27019
+
+
+## In Wekan code (old)
 
 wekan/models/customFields.js , at bottom