I'd like to create a content type where the user can select criteria from an existing content type to form a unique list of content.
For example, let's say I have a content type called
shoes with the fields
price. (It may not be relevant to the example, but let's say that
color are stored as lists, and
price is stored as a decimal.)
I'd like a user to be able to create a new node of content type called
list (or something to that effect) where they could select values from the three fields within
shoes, and store the result as a unique
list node (e.g. "all size 8 red shoes under $50").
What's the best method to achieve this? Is this a job for Entity Views Attachment?