sure it can do with umbraco, how did you implement the comments so far ?

Everything on the old site was handcoded in raw sql (for MySQL) and classic ASP. But there is no dislike-function on the existing site.

Edit: Ahh, of course you mean on the new Umbraco site... :) The comments are just nodes (without templates) on the recipes. Subquestion; is there a better way to do it?

you can use your way, i saw someone implement it here http://our.umbraco.org/forum/developers/razor/18551-CommentsHow-to with razor.
you can define on your document type of comment a property of number that will hold the number of dislikes.

if you want to show the comments you can do something like this.

@foreach(var item in Model.Children.Where("numOfDislikes < 5") 
{ 
}

another option is to enable the "umbracoNaviHide" once the counter of numOfDislikes reaches 5 and then you can do 

@foreach(var item in Model.Children.Where("Visible") { }

and about changing the property on the frontend you can do it with the API, read more about it http://our.umbraco.org/wiki/reference/api-cheatsheet/modifying-document-properties
hope that help you to get started.

Yes, I know how to do it this way, but as I wrote above, I would like the dislike to be registered on the member. The reason for this is so he/she cannot dislike it multiple times.

Super, this looks exactly like the thing I need! :) However, I installed the package, and I get the following error every time I click the only relation there is:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DUAL, NAME, ALIAS FROM UMBRACORELATIONTYPE WHERE ID = 1' at line 1

Also, I cannot create any new relations. I'm running Umbraco 4.7. The documentation for the package also seems sparse, do you have any useful links?

i have no idea, you can use relations without the package, unfortunely there's no good documenation about it without umbraco.tv :\
maybe someone know a good article for it?

found something http://blog.hendyracher.co.uk/umbraco-relation-api/#content

Awesome, thank you! :) It's a shame Umbraco is so poorly documented. But the community, and especially the forums, make up for it! :)

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