I'm using Drupal 8's Migrate API to pull in an RSS Feed as Nodes. The simple_xml data parser seems to require a Unique ID for the import or else I get an error on import.
The XML data is coming from the internet and only has one field applicable as a unique id, however it is preceded by a URL. I process the field with the substr plugin in order to pull in the ID, but when I run the import I get the following error message :
Migration failed with source plugin exception: field_guid has no value
The YAML file includes the following:
source: plugin: migrate_gitem_xml data_fetcher_plugin: file data_parser_plugin: simple_xml urls: - www.somesite.com/source/xml-source.xml item_selector: '/rss/channel/item' ids: field_guid: type: integer fields: - name: title label: 'Title of the Item' selector: title - name: link label: 'Link to the Item' selector: link - name: body label: 'Body' selector: > content:encoded - name: guid label: 'ID of the Item' selector: guid process: type: plugin: default_value default_value: content_type uid: - plugin: default_value default_value: 1 title: title field_link: link body/value: body body/format: plugin: default_value default_value: basic_html changed: '@created' field_guid: - plugin: substr source: guid start: 61 length: 6
Any insight on how to get the Migration to work?