When using taxonomy for free tagging purposes, it's easy to end up with several terms having the same meaning. This may be due to spelling errors, or different users simply making up synonymous terms as they go.
You, as an administrator, may then want to correct such errors or unify synonymous terms, thereby pruning the taxonomy to a more manageable set. This module allows you to merge multiple terms into one, while updating all fields referring to those terms to refer to the replacement term instead.
Currently, the module only acts on:
- fields of the following types: taxonomy term reference, entity reference, and other fields that correctly define their foreign keys
- Views Taxonomy Term filter handlers
- Redirects
The term merging may happen in 2 flavors. You can either manually indicate what terms should be merged or you can use duplicate suggestion tool for this purpose. This tool intends to scan your vocabulary and to detect such terms that are likely to be duplicates. You will then only review the list of suggested duplicates and will schedule for merging only those that actually are duplicates. The heuristics through which duplicate tool determines potential synonymous terms are made to be extensible by other modules. Refer to Term Merge advanced help if you want to write a custom one, though the module itself ships with the following heuristics:
- search by the same name
- search by the same description
- search by the same parent
You can indicate which specific heuristics should be used for searching duplicates within the UI of duplicate suggestion tool.
Currently module integrates with the following core and contributed modules:
- Redirect module (in Backdrop core). During term merging you may set up SEO friendly redirects from the branch terms to point to the trunk term.
- Views (in Backdrop core). If the branch terms are to be deleted after the merging process, you could end up having some Views filters to filter on no longer existing terms. Term Merge module, while merging terms, will update those filters to filter not on the branch term, but on the trunk term. This way you will not have senseless filters and will not have to update them manually.
- Taxonomy Manager (contrib). A "Merge" button is provided in the Taxonomy Manager interface if this module is also enabled.
- Taxonomy module enabled
- Plugin Manager
- Install this module using the official Backdrop CMS instructions
- Usage instructions can be viewed and edited in the Wiki.
- Bugs and Feature requests should be reported in the Issue Queue.
- Laryn Kragt Bakker.
- Seeking co-maintainers
- Ported to Backdrop CMS by Laryn Kragt Bakker.
- Backdrop development is supported by Aten Design Group.
- Maintainers on drupal.org include aurelianzaha, bucefal91, daniel_j, eli, g.i.joe, legolasbo, nylin, bleen.
- Original authors: Max Nylin, and Oleksandr Trotsenko.
This project is GPL v2 software. See the LICENSE.txt file in this directory for complete text.