How to migrate a text field into a link field in Drupal 8

In working on a project where we were migrating a Drupal 7 site to Drupal 8, I came across a case where we needed to migrate the data from what was a regular text field in the Drupal 7 site into a link field in the new Drupal 8 site.  As it was, the YAML for the migration was treating the destination field as a text field as well:


  field_lab_website:
    plugin: get
    source: field_lab_website

This meant that the data didn't get migrated into the new site at all.  I did some Googling, but wasn't able to find anything helpful.  So, I looked at some of the other migration YAML files, saw some some cases where the "sub_process" plugin was getting used, and tried that out.  What worked was this:


  field_lab_website:
    plugin: sub_process
    source: field_lab_website
    process:
      uri: value

This works because the Drupal 8 link field is a multi-value field.  By using the "sub_process" plugin, we can tell Drupal what to use for each component of the field.

5 Comments

About text formats

Plain text

  • No HTML tags allowed.
  • Lines and paragraphs break automatically.
  • Web page addresses and email addresses turn into links automatically.
CAPTCHA
By Anonymous (not verified) | Friday, 10 Jan 2020 @ 8:48am
Permalink

It worked for me to ...really helpful post

By Juan (not verified) | Monday, 27 Jan 2020 @ 1:04pm
Permalink

Thank you. Just I was looking for.

By Anonymous (not verified) | Monday, 11 May 2020 @ 6:58am
Permalink

Thank you, It worked for me.

By Screenack (not verified) | Wednesday, 26 Aug 2020 @ 3:40pm
Permalink

And just in case this is the first search result, as it was for me, I have a migration that is D7 link to D8 link. It seems that 8.4.x migrate API changed, and you must now do:

field_external_story: 
  - 
    plugin: field_link 
    uri_scheme: 'https://' 
    source: field_external_link

Thanks for this, but this appears to be for a different use case than my original post.  In my case, I was migrating from a URL stored in a text field in the D7 site to a link field in the D8 site.  This looks like you're migrating from a link field to a link field.

I believe the code in the original post is still correct.