Requirements
A CoreMedia deployment can host multiple sites which frequently differ in layout and functionality. It is a common requirement to use different view templates for those sites but still be able to define reused templates across sites flexibly.
Solution
The CoreMedia CAE
offers a very flexible view selection mechanism by providing
the ViewRepositoryNameProvider and ViewRepositoryProvider abstraction
(see [Content Application Developer Manual], chapter "Views").
CoreMedia Blueprint offers the
BlueprintViewRepositoryNameProvider implementation which for each lookup of model
and view generates a list of view repository names to query. The list is created based on
the specific view repository names defined in the String list setting
viewRepositoryNamesof the navigation context of the provided model,the view repository names defined via Spring in the property
commonViewRepositoryNameson theBlueprintViewRepositoryNameProviderJava bean.
This allows for more fine-grained control of the used view repositories as view repositories can be configured not only specific for a site but also for each site section.
CoreMedia Blueprint uses the standard CAE
TemplateViewRepositoryProvider to create from the list of view repository names the
list of actual view repositories to query. CoreMedia Blueprint
configures the following templateLocationPatterns for the
TemplateViewRepositoryProvider:
jar:id:contentproperty:/Themes/%1$s/templates/%1$s-templates.jar/archive!/META-INF/resources/WEB-INF/templates/%1$sjar:id:contentproperty:/Themes/%1$s/templates/%1$s-templates.jar/archive!/META-INF/resources/WEB-INF/templates/sites/%1$s/WEB-INF/templates/sites/%s/WEB-INF/templates/%s
Example: For a content of the corporate site the BlueprintViewRepositoryNameProvider
yields the view repository names "corporate". The
TemplateViewRepositoryProvider would then return the following view repositories
which are queried for the responsible view:
A FreeMarker template view repository in the CMS located in the
/Themes/corporate/templates/corporate-templates.jar(aCMTemplateSet) content item's blob propertyarchiveA Freemarker or JSP file system view repository below
/WEB-INF/templates/sites/corporateA Freemarker or JSP file system view repository below
/WEB-INF/templates/corporate
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