Migrating XML in 8 brandt Thu, 10/20/2021 – 17 Drupal 10 Maintenance and Support Service14 Kelsey Bentham Oct 21, 2021 Migrate in 8 is a versatile and highly effective software – you simply have to know the place to look.  On this submit we are going to cowl… Some findings from our first D8 tasks The way to use the Migrate Plus XML information course of plugin A word on prefixed namespaces Keep related with the newest information on net technique, design, and improvement. Join our publication. 8 is right here which suggests I’ve had the privilege of engaged on my first D8 tasks and the migrations that accompany them. I wished to share a few of the key findings I’ve taken away from the expertise. Migrate in 8 is superior so long as what you’re looking at. It’s versatile, highly effective and comparatively simple to learn. However as is the case with most issues, loads of its energy is tucked away the place it’s exhausting to search out if you do not know the place to look. That is positively the case with Migrate Plus XML information course of plugin which is presently obtainable solely within the dev model of Migrate Plus. It’s a fairly stable software for migrating from quite a lot of XML primarily based sources and at the moment we’re going to speak about the right way to use it. The very first thing we now have to think about is the place our information is coming from. Migrate plus expects to have this info fed to it within the type of a url which supplies us two choices Drupal 10 Maintenance and Support Service our supply is from exterior the web site, like an rss feed; or it’s saved regionally. You probably have an exterior url, all you want to do is plug it into the url’s parameter. In case your supply is saved regionally, you’ll both have to assemble a url for the supply or retailer it within the personal file listing, utilizing the personal Drupal 10 Maintenance and Support Service// stream wrapper. I’d go for the latter because it entails much less overhead. At this level your migration supply ought to look one thing like this Drupal 10 Maintenance and Support Service supply Drupal 10 Maintenance and Support Service        plugin Drupal 10 Maintenance and Support Service url        data_fetcher_plugin Drupal 10 Maintenance and Support Service http        data_parser_plugin Drupal 10 Maintenance and Support Service xml       urls Drupal 10 Maintenance and Support Service personal Drupal 10 Maintenance and Support Service//migration.xml This brings us to parsing out the XML. The entire selectors we shall be speaking about are utilizing xpath. The very first thing you want to do is outline the merchandise selector so migrate can determine the person gadgets emigrate into your select vacation spot. For instance, if we have been migrating posts from a WordPress export it would look one thing like this Drupal 10 Maintenance and Support Service item_selector Drupal 10 Maintenance and Support Service /rss/channel/merchandise[wp Drupal 10 Maintenance and Support Servicepost_type=”post”] Subsequent up we have to map all of our fields to good, readable machine names that we will use within the course of a part of the migration. Every area may have a reputation that can determine it in different components of the migration, a label for describing what kind of information we are going to discover in that XML aspect, and a selector so the migration can map that information from the xml file Drupal 10 Maintenance and Support Service fields Drupal 10 Maintenance and Support Service    –     title Drupal 10 Maintenance and Support Service title     label Drupal 10 Maintenance and Support Service Content material title     selector Drupal 10 Maintenance and Support Service title    –     title Drupal 10 Maintenance and Support Service post_id     label Drupal 10 Maintenance and Support Service Distinctive content material ID     selector Drupal 10 Maintenance and Support Service wp Drupal 10 Maintenance and Support Servicepost_id    –     title Drupal 10 Maintenance and Support Service content material     label Drupal 10 Maintenance and Support Service Physique of the content material     selector Drupal 10 Maintenance and Support Service content material Drupal 10 Maintenance and Support Serviceencoded    –     title Drupal 10 Maintenance and Support Service post_tag     label Drupal 10 Maintenance and Support Service Tags assigned to the content material merchandise     selector Drupal 10 Maintenance and Support Service ‘class[@domain=”post_tag”]/@nicename’ In case you are utilizing something extra sophisticated than the XML node names, you will have to wrap the selector as a string. The selectors are being handed to xpath within the information processor, so you may get fairly exact in deciding on XML nodes. All that’s left to do is outline the migration id and you’ve got your supply all able to go Drupal 10 Maintenance and Support Service ids Drupal 10 Maintenance and Support Service    post_id Drupal 10 Maintenance and Support Service      kind Drupal 10 Maintenance and Support Service integer Put all of it collectively and you must have one thing that appears one thing like this Drupal 10 Maintenance and Support Service supply Drupal 10 Maintenance and Support Service        plugin Drupal 10 Maintenance and Support Service url        data_fetcher_plugin Drupal 10 Maintenance and Support Service http        data_parser_plugin Drupal 10 Maintenance and Support Service xml       urls Drupal 10 Maintenance and Support Service personal Drupal 10 Maintenance and Support Service//migration.xml    item_selector Drupal 10 Maintenance and Support Service /rss/channel/merchandise[wp Drupal 10 Maintenance and Support Servicepost_type=”post”]    fields Drupal 10 Maintenance and Support Service       –        title Drupal 10 Maintenance and Support Service title        label Drupal 10 Maintenance and Support Service Content material title        selector Drupal 10 Maintenance and Support Service title       –        title Drupal 10 Maintenance and Support Service post_id        label Drupal 10 Maintenance and Support Service Distinctive content material ID        selector Drupal 10 Maintenance and Support Service wp Drupal 10 Maintenance and Support Servicepost_id       –        title Drupal 10 Maintenance and Support Service content material        label Drupal 10 Maintenance and Support Service Physique of the content material        selector Drupal 10 Maintenance and Support Service content material Drupal 10 Maintenance and Support Serviceencoded       –        title Drupal 10 Maintenance and Support Service post_tag        label Drupal 10 Maintenance and Support Service Tags assigned to the content material merchandise        selector Drupal 10 Maintenance and Support Service ‘class[@domain=”post_tag”]/@nicename’       ids Drupal 10 Maintenance and Support Service          post_id Drupal 10 Maintenance and Support Service            kind Drupal 10 Maintenance and Support Service integer A word on prefixed namespaces Drupal 10 Maintenance and Support Service you possibly can see we blended XML nodes which have prefixes with people who don’t. Generally Migrate handles this with no downside in any respect; typically it refuses to fetch information from XML nodes that don’t have prefixes. So far as I can inform, it does this when one of many nodes within the item_selector has a prefix (though it doesn’t appear to have this downside with the filters within the item_selector). If you happen to ought to have a datasource with a mum or dad prefixed node, you possibly can nonetheless get non-prefixed youngsters by utilizing the next syntax Drupal 10 Maintenance and Support Service title Drupal 10 Maintenance and Support Service description label Drupal 10 Maintenance and Support Service Content material description selector Drupal 10 Maintenance and Support Service ‘*[local-name()=”description”]’ It is going to let you choose XML nodes with a given native title whatever the prefix, which may be very helpful when you haven’t any prefix in any respect. 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