Template:Foos (dis)established in YYYY category header/sandbox
 | This is the template sandbox page for Template:Foos (dis)established in YYYY category header (diff). |
 | This template employs intricate features of template syntax.
You are encouraged to familiarise yourself with its setup and parser functions before editing the template. If your edit causes unexpected problems, please undo it quickly, as this template may appear on a large number of pages. You can conduct experiments, and should test all major changes, in either this template's sandbox, the general template sandbox, or your user space before changing anything here. |
To make a category of the form "Foos established in YYYY" or "Foos disestablished in YYYY", where YYYY is a year (e.g. "872", "1976", or "2015"), and "Foos" is a type of entity, e.g. "Companies" or "Hospitals"
e.g.
Usage[edit]
{{Foos (dis)established in YYYY category header}}
No parameters are needed, but some optional parameters may be supplied.
How it works[edit]
The template parses the page title, and derives three items from it:
- The type of entity
- The action, i.e. either "established" or "disestablished"
- The year
So for example, if used on Category:Organizations established in 1837:
- type = "Organizations"
- action = "established"
- year = 1837
That page is categorised in three parent categories:
- Category:Organizations by year of establishment
- Category:Organizations established in the 1830s
- Category:1837 establishments
In some cases, this is sufficient. However, in other cases, the parent category should be a sub-category of Category:1837 establishments.
Foe example, Category:Transport companies established in 1926 should be a sub-category of Category:Companies established in 1926, and per WP:SUBCAT it should not be directly in Category:1926 establishments.
In cases such as these, extra parameters are needed.
Parameters for establishment type parent categories[edit]
Up to three un-named parameters may be used to specify parent types
e.g. On Category:Transport companies established in 1926:
{{Foos (dis)established in YYYY category header|Companies}}
The parameter "Companies" causes the page to be parented in Category:Companies established in 1926, instead of Category:1926 establishments
Redirects[edit]
- Template:Foos established in YYYY category header
- Template:Foos disestablished in YYYY category header