Taxonomy view page for double nested terms

Question

I have a content type that has an entity reference to a taxonomy term. The referenced taxonomy term has furthermore taxonomy terms referenced to it.

On the taxonomy term view page, I would like the content appear, that refers to the terms nested inside first term reference.

The idea of double nested content and display on the taxonomy view page worked for me well, when I used for the first level nesting another content type instead of a taxonomy term. That way I could successfully apply following relationship and contextual filter on the view. I added a relationship to the entity reference field’s content and applied it to the contextual filter.

Now, wanting to use a taxonomy term as first level reference, I am not able to get it work. I thought the following should work, but it does not:

What relationship do I have to apply, to get the desired result?

(I hope I was able explain my problem comprehensibly)

Edit:

The schema is following:

NODE 1 > TERM 1 > TERM 3

NODE 2 > TERM 2 > TERM 3

TERM PAGE (taxonomy/term/3) SHOW: NODE 1 + 2

• The nodes have the reference field "field_key_data" that references the vocabulary "architecture". The terms in the vocabulary "architecture" have a term reference field "field_style" (TERM 1 or TERM 2) of another vocabulary.
• The term in "architecture" may be different, but can reference to the same value in "field_style" (TERM 3).
• If this is the case, the TERM PAGE for term 3 should show as result NODE 1 and NODE 2.
• Futhermore the result should be displayed with depth.

Answer 1

Show only grandchild nodes on Taxonomy term pages

In more words: Add nodes to Taxonomy term pages that are tagged with terms that reference the term shown on that page. This means that nodes that directly reference the TID will not be shown. Instead, we show nodes that have an additional Taxonomy link in between, a sort of grandchild connection.

We first introduce the "parent" connection (in your case it's "Architecture" from field_key_data). Then through it we bring in grandparent "Style" information from field_style. Since we want to show nodes that relate to that TID through that "lineage" we simply use Term ID Contextual filter with the "grandparent" Relationship.

1. Clone (Duplicate) the default Taxonomy term View (which is of Content type). It already has one Contextual filter (Has Taxonomy Term ID) that is responsible for showing all nodes tagged with that term. Remove it, we don't want parents, we're only interested in grandparent.
2. Add a Relationship Taxonomy term referenced from field_key_data.
3. Add another Relationship Taxonomy term referenced from field_style, it will use the first Relationship.
4. Add a new Contextual Filter Term ID, make it use the second Relationship, and configure it:
   When the filter value is NOT available
   Provide default value
   Taxonomy term ID from URL
   Load default filter from term page
   When the filter value IS available or a default is provided
   Specify validation criteria
   Taxonomy term ID
   Style (or whatever in your case)
5. Under Query settings choose Distinct because you'll see duplicated results because Relationships introduce many connections so to prevent it Distinct only shows each node once.

No need for Contextual OR BTW, we only have one Contextual filter anyway :)

BTW you can "require" both Relationships since this entire scheme relies on existence of grandchildren.

Answer 2

Add cousin nodes to Taxonomy term pages

In more words: Add nodes to Taxonomy term pages that are tagged with terms that reference the term shown on that page.

Node > Original Term > Referenced term > Other nodes

Node is tagged with some term, that term has a field referencing another term, the other term also has nodes tagged with it. So it's kind of a cousin relationship between nodes.

What is required is a Contextual filter that filters out nodes tagged with a term, OR nodes tagged with a term that references the original term.

To do that we need to use Views Contextual Filters OR module.

1. Clone the default Taxonomy term View (which is of Content type). It already has one Contextual filter (Has Taxonomy Term ID) that is responsible for showing all nodes tagged with that term. You can leave that active.

   The second Contextual Filter has to display nodes that have been tagged with terms that reference the "original" node. We have to add Relationships to introduce that new information into the Views.

2. Add a Relationship to Taxonomy terms (term).
3. Add another Relationship for the Taxonomy field referencing another Taxonomy field, it will use the first Relationship.
4. Add a new Contextual Filter for that same Field between Terms, make it use the second Relationship, and set it to display all results.
5. Under Query settings choose Contextual filters OR.

Now if your term 1 is referencing term 2, if you go to taxonomy/term/1/2 it will show all nodes tagged with term 1 AND also all nodes that are tagged with term 2.