Although Novius OS natively manages multiple contexts, each application decides the way it uses them on its own.
Three cases can be found.
It’s the most simple and default case. The application doesn’t manage any context and has nothing to do.
Its content will be the same across all contexts and can be used (through enhancers) by any of them.
The application manages contexts. Each item will be associated with a context, and should only be used inside of it.
Technically, tables of the application have a context column (of type varchar(25)) which contains the context code. Models of the application must implement the Contextable behaviour.
The application manages contexts and can link them together. Each item is associated with a context and can be linked to other items from a different context.
Technically, tables of the application have 3 columns:
| context: | varchar(25), contains the context code of the item. |
|---|---|
| common_id_property: | |
| int contains a common ID share among all linked items. | |
| is_main_property: | |
| boolean, each group of linked items will only have one main item. | |
Models of the application must implement the Twinnable behaviour.
Schema of our example table:
Let’s create a first item:
| item_id | item_context | item_common_id_property | item_is_main_property | item_title |
|---|---|---|---|---|
| 1 | main::fr_FR | 1 | 1 | Premier item |
Let’s add another item in another context, and linked to the first one:
| item_id | item_context | item_common_id_property | item_is_main_property | item_title |
|---|---|---|---|---|
| 1 | main::fr_FR | 1 | 1 | Premier item |
| 2 | main::en_GB | 1 | 0 | First item |
Let’s see how it looks after a few more addition:
| item_id | item_context | item_common_id_property | item_is_main_property | item_title |
|---|---|---|---|---|
| 1 | main::fr_FR | 1 | 1 | Premier item |
| 2 | main::en_GB | 1 | 0 | First item |
| 3 | main::en_GB | 3 | 1 | Second item |
| 4 | main::fr_FR | 3 | 0 | Second item (fr) |
| 5 | event::fr_FR | 5 | 1 | Item du site event |
| 6 | main::es_ES | 1 | 0 | First item (es) |
Let’s delete the item with ID 1 :
| item_id | item_context | item_common_id_property | item_is_main_property | item_title |
|---|---|---|---|---|
| 2 | main::en_GB | 1 | 1 | First item |
| 3 | main::en_GB | 3 | 1 | Second item |
| 4 | main::fr_FR | 3 | 0 | Second item |
| 5 | event::fr_FR | 5 | 1 | Item du site vent |
| 6 | main::es_ES | 1 | 0 | First item |
The item with ID 2 now becomes the main item, but the item_common_id_property has not changed.