Question

Not sure how this is happening but it’s saying the column doesn’t exist:

SQLite3::SQLException: no such column: element.kind: SELECT COUNT(*) FROM “answers” INNER JOIN “elements” ON “elements”.”id” = “answers”.”element_id” WHERE “answers”.”form_id” = 55 AND “element”.”kind” = 6

# element.rb
class Element < ActiveRecord::Base
  has_many :answers
end

# answer.rb
class Answer < ActiveRecord::Base
  belongs_to :element
  belongs_to :form
end

class Form < ActiveRecord::Base
  has_many :answers
end

But when I run:

@form.answers.joins(:element).where(:element => {:kind => 6})

I get the sql error above. Not sure what’s going on. Any thoughts on what I’m missing?

Thanks!

FYI I’m running rails 3.2.3 with ruby 1.9.3.

Answer 1

The table is elements rather than element as generated by the query ("element"."kind" = 6).

@form.answers.joins(:elements).where(:elements => {:kind => 6})

I would have expected the rest of the query to be generated using the nonexistent element table as well, since you used .joins(:element) instead of .joins(:elements) but perhaps Rails is pluralizing inside .joins() for a belongs_to association.

@form.answers.joins(:element).where(:elements => {:kind => 6})