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Home/ Questions/Q 7920955
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Editorial Team
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Editorial Team
Asked: June 3, 20262026-06-03T16:24:18+00:00 2026-06-03T16:24:18+00:00

I have models: class Materialtitle < ActiveRecord::Base has_many :edocs end class Edoc < ActiveRecord::Base

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I have models:

class Materialtitle < ActiveRecord::Base
  has_many :edocs
end

class Edoc < ActiveRecord::Base
     belongs_to :materialtitles
end

I may do Materialtitle.find(2).edocs.
I would like to do something like Edoc.find(10).materialtitles. But It returns nil.

Could someone help me?

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  1. Editorial Team
    Editorial Team
    2026-06-03T16:24:20+00:00Added an answer on June 3, 2026 at 4:24 pm

    If it is many-to-one then it should be belongs_to :materialtitle (singular) and your DSL should look like:

     Edoc.includes(:materialtitle).find(10).materialtitle
    
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