Setting the "origin" attribute on a dynamic link in a REL DCP

Question

I have a DCP with Allow on Page Using Dynamic Assembly checked which I am storing in the database. This DCP is a summary display of a component, and it contains a component link to another component presentation using the same component on a different page. I have the Output Format set to REL so that the dynamic link will be resolved at runtime.

Everything generally works, <tcdl:Link> tags make it into the COMPONENT_PRESENTATIONS table and are resolved when the page is rendered. However since this DCP is used on multiple pages I cannot set the origin attribute on the tcdl:link tag during publish. I know this means the link resolution will not be cached, it also results in a page linking to itself sometimes. I reviewed some posts, including this one by Mihai (Passing the PageURI to a DCP for Dynamic Linking) but that only applies to DCPs stored in the file system. I know I can set template priority to solve this problem in this particular instance by making the detail CP higher priority but I'm wondering if there is a way to use the origin attribute properly in this situation.

Additional Information:

I am using Razor mediator for templating, ASP.NET for delivery, pages and binaries are stored in the file system with everything else in the DB.

My link tag as it exists in the COMPONENT_PRESENTATIONS table:

<tcdl:Link type="Component" origin="tcm:0-0-0" destination="tcm:42-215" templateURI="tcm:0-0-0" linkAttributes=" title=&quot;Available content component types&quot;" textOnFail="true" addAnchor="false" variantId="">Available content component types</tcdl:Link>

Thanks.

Answer 1

Looks like you have a classic "index page with summaries/teasers pointing to detailed article pages".

My understanding is that the origin attribute is there to exclude the current page from the Dynamic Linking algorithm, i.e. it is the URI of the page that list the dynamic link (this page). But when you're rendering a DCP used in multiple pages linking to another DCP also used on multiple pages, you have multiple origin values. So this can't be done and Tridion sets the value to "tcm:0-0-0" because that's the best it can do.

What you can do is set the summary CT to not be a Dynamic template. So render it statically on your index/summary page, and you should be able to specify the origin then.