AxRelations
With AxRelation users can create relations between objects in CMS.
For example, a page can have relation with other pages with the same content in different languages, and the same time with different pages in the same languages (e.g. chapters of one book).
To assign a thumbnail to a page we can create relation of the type "Thumbnail" between a page and a document. This relation must be distinguished from the relation "Preview", also defining relation between pages and documents but for another purpose.
AxCMS.net provides two types of relations: circle and straight ones (before AxCMS.net ver7.1.1 only circle relations were available). The following image describes main differences between them:
where a) demonstrates creation of relation between A and C; b) - new relation between C and D; c) deletion of element C.
So, related elements of element A (after finishing creation/deletion procedure) will be
* in case of circle relation: a) B, C; b) B, C, D, E; c) B, D, E
* in case of straight relation: a) B, C; b) B, C; c) B.
Relation subtree
Circle relations are situated under CircleRelationTypes (CategoryID=53). Straight relations - under StraightRelationTypes (CategoryID=54).
Default relation type is provided - it's Relation, CategoryID=22.
Customers add own relation types with SQL scripts.
ExternID
Defining value of ExternID helps you now to define types of relatable elements within the considered relation type.
The value should contain the IDs of ElementType separated with comma. Empty value means that all relatable elements can be related between each other.
For example
- ExternID=“1,14” allows to create only Page-Document relations;
- ExternID=“1,1,14” allows to create Page-Page and Page-Document relations.