在RoR中生成模型时显示错误，模型中的参数数量错误

Question

I'm new in RoR. I'm learning models and generating the models for my app and it's associations. The console generated the error when I tried:

$ rails console

mypath.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activerecord-5.1.3/lib/active_record/associations.rb:1395:in `has_many': wrong number of arguments (given 4, expected 1..3) (ArgumentError)

and more lines of errors but this one is the key I think.

Answer 1

Solved it, I was writing on the same line different associations which is not correct:

Wrong:

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  has_many :questions, :answers, :comments, :votes
end

Correct:

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable
  has_many :questions
  has_many :answers
  has_many :comments
  has_many :votes

end