Question

I have three models: Project, Year, and Category

Project has a HABTM relationship with both years and categories.

I’m trying to get all projects that belong to both a given category and a given year.

Something like Project.where("year.name = ? and category.name = ?", "2012", "print") But I’m not sure how to do this with associated models rather than attributes of the model.

Thanks

Answer 1

Try

Project.joins(:years).joins(:categories).where("years.name = ? and categories.name = ?", "#{year}", "#{category}")