I am just creating my first Umbraco site and am looking to create an RSS feed that displays the latest 10 items from the site (of various content types) from various levels and various nodes across the content tree. e.g. checking all descendants from the root node and returning the 10 with the most recent createDate.
Is there anyway to do this without a loop? I don't want to use a loop as when the site has 1000's of pages I would think this would be a slow process and would need an additional sorting algorithm.
e.g can the Umbraco Library do an equivalent of a SQL query like
SELECT TOP 10 * FROM Content -- or whatever this is called in Umbraco ORDER BY CreateDate DESC
My first inclination would be for you to use an XPath query (yes, in Razor, not xslt) and then call OrderBy() and then Take(). You can put this into a macro and cache it for a minute or so. Even with 1000's of nodes my gut tells me this would still be pretty fast, but really the only way to know is to test it, try it, and measure it.This is all off the cuff, but something like this:
var latestThings = Model.AncestorOrSelf().XPath(".//someNodeTypeAlias").Where("Visible").OrderBy("CreateDate desc").Take(10); foreach (var node in latestThings) { ... }
The code above has successfully worked a single document type. Thanks.
I have modified the code to select both Article and ArticleCategory document types. I am a bit of an XPath novice so don't know if this is the best / correct way to do this? Ideally I would like to expand this to include other document types.
My query currently reads
var latestThings = Model.AncestorOrSelf().XPath(".//Article|.//ArticleCategory").Where("Visible").OrderBy("CreateDate desc").Take(10);
Yes, i frequently use that same OR separator in the XPath query to do as you achieve. Although I have been traditionally putting a space around the vertical pipe character, didn't realize it works the same without. Glad you got this working!
Get latest 10 content items from all nodes in tree without a loop
Hi,
I am just creating my first Umbraco site and am looking to create an RSS feed that displays the latest 10 items from the site (of various content types) from various levels and various nodes across the content tree. e.g. checking all descendants from the root node and returning the 10 with the most recent createDate.
Is there anyway to do this without a loop? I don't want to use a loop as when the site has 1000's of pages I would think this would be a slow process and would need an additional sorting algorithm.
e.g can the Umbraco Library do an equivalent of a SQL query like
SELECT TOP 10 *
FROM Content -- or whatever this is called in Umbraco
ORDER BY CreateDate DESC
I have seen the Razor RSS cookbook example at
http://umbraco.com/help-and-support/video-tutorials/umbraco-fundamentals/razor-recipes/rss.aspx ;
but this doesn't seem to span more than one level or multiple sibling nodes
p.s. as a new user I am loving the flexibility of creating your own document types in Umbraco :0)
I am using Umbraco v 6.02
Thanks.
My first inclination would be for you to use an XPath query (yes, in Razor, not xslt) and then call OrderBy() and then Take(). You can put this into a macro and cache it for a minute or so. Even with 1000's of nodes my gut tells me this would still be pretty fast, but really the only way to know is to test it, try it, and measure it.This is all off the cuff, but something like this:
var latestThings = Model.AncestorOrSelf().XPath(".//someNodeTypeAlias").Where("Visible").OrderBy("CreateDate desc").Take(10);
foreach (var node in latestThings)
{
...
}
Best of luck!
Thanks for the reply, what if I want to collect all node types, e.g. article, articlecategory etc. What would I replace .//someNodeTypeAlias with?
thanks.
The code above has successfully worked a single document type. Thanks.
I have modified the code to select both Article and ArticleCategory document types. I am a bit of an XPath novice so don't know if this is the best / correct way to do this? Ideally I would like to expand this to include other document types.
My query currently reads
var latestThings = Model.AncestorOrSelf().XPath(".//Article|.//ArticleCategory").Where("Visible").OrderBy("CreateDate desc").Take(10);
Yes, i frequently use that same OR separator in the XPath query to do as you achieve. Although I have been traditionally putting a space around the vertical pipe character, didn't realize it works the same without. Glad you got this working!
This is one of my favorite references: glad that is hasn't gone 404 on us yet! http://msdn.microsoft.com/en-us/library/ms256086.aspx
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