![Feature Pack 7 or later](../../com.ibm.commerce.base.doc/images/FEP7plus.gif)
Commerce Composer layout resolution
When a shopper views a store page that is managed
in the Commerce Composer tool, the Commerce Composer framework must
determine which layout to use to render the page. To resolve the layout,
the framework processes the layout assignments that are set up by
business users for the page. If there are no layout assignments for
the page, the default layout for the page group is returned.
Layout assignment activities
Every time a business user saves a layout assignment, the Commerce Composer framework creates a layout assignment activity for each page and search term to which the layout is assigned. These specialized activities capture details about the layout assignment that are required for layout resolution. The layout assignment activity associates each assigned page or search term with a layout for a specific device class (mobile, desktop, or responsive).Tip: If you are familiar
with marketing web activities in the Marketing tool, layout assignment
activities have a similar structure. This structure consists of campaign
elements (triggers, targets, actions) that form a layout assignment
rule. However, in the Commerce Composer framework, the layout assignment
activity is not exposed in the Management Center user interface to
business users. In other words, business users do not build a layout
assignment activity as they would a marketing web activity. The following
illustrations are provided only to help you visualize the structure
of layout assignment activities.
![layout assignment activity structure](../images/locale/pz_laywebact_generic.png)
- 1 E-Marketing Spot trigger
- Identifies the name of the layout e-Marketing Spot that represents the page or the search term to which the layout is assigned.
- 2 Device Class target
- Identifies the class of device that the layout is intended to
be viewed on, based on the selected layout template. Valid values
are:
Web
(desktop)Mobile
Any
(responsive)
- 3 Current Page target
- For layouts assigned to category pages only:
- Identifies the specific category page to which the layout is assigned.
- Specifies whether subcategory pages or child catalog entry pages inherit the layout from the category page.
- 4 Show Page Layout action
- Identifies the layout to use to render the page.
The following are specific examples of layout assignment activities for layouts assigned to various pages and search terms.
![layout assignment activity for a layout assigned to a content page](../images/locale/pz_laywebact_content.png)
![layout assignment activity for a layout assigned to a category](../images/locale/pz_laywebact_cat.png)
![layout assignment activity for a layout assigned to a product](../images/locale/pz_laywebact_prod.png)
![layout assignment activity for a layout assigned to products in a specific category](../images/locale/pz_laywebact_prodin.png)
![Layout assignment activity for a layout assigned to search terms](../images/locale/pz_laywebact_search.png)
E-Marketing Spot names in layout assignment activities
The following are examples of layout e-Marketing Spot names that are used in layout assignment activities:- Content_50005
- Category_10001
- Product_30003
- Category_20002_Product
- Search_notebook
The layout e-Marketing Spot names are constructed using this convention:
pageGroup_ObjectIdentifier_subPageGroup
Where:
- pageGroup
- The page group to which the page that the layout is assigned to
belongs. Valid values are:
Content
Category
Search
Product
Bundle
Kit
DynamicKit
Item
(not used in the Aurora starter store)
- ObjectIdentifier
- The identifier of the page or search term.
- For a category page: the categoryId
- For a catalog entry page: the productId
- For a search term: the search term
- For a content page: the pageId
- subPageGroup
- Required only for layouts that are assigned to categories to be
inherited by their catalog entries: The page group to which the catalog
entries belong. Valid values are:
Product
Bundle
Kit
DynamicKit
Item
(not used in the Aurora starter store)