How to organise structure?
Good afternoon. It would be desirable to realise banal structure:
The user creates type of a material "House" (cck fields: a material of walls, quantity of floors etc.).
Then to each house user creates apartments (cck fields: the price, quantity(amount) of square metres, a floor).
How to fasten among themselves houses and apartments? That I could make views-sorting (all three-room apartments, it is more 70 than square metres in 9-storeyed panel houses)?
1. Module Category? There is a problem with support of other modules
2. The module taxonomy_context? Each house is a category or the term, it is not good
3. node_reference? It can be connected but how to make sample views that Drupal knew, what the apartment is in this house?

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Nodereference is the way to do this and you can make views referencing any of the fields on any of the related content types by adding relationships. You can also display the related nodes directly on the content types with views_attach.
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Many thanks!
Many thanks! I have added Relationships Content: House. And what is it necessary to write down in arguments?