Question

Ok, I have a huge trouble finding the words to explain my problem. I hope you can understand and help me because frankly, I am going insane.

Let’s say I have four models: User, Team, Report and UserReport. I have this:

class Report < ActiveRecord::Base
  belongs_to :team
  has_many :user_reports
  accepts_nested_attributes_for :user_reports
end
class UserReport < ActiveRecort::Base
  belongs_to :report
end

class ReportsController < ApplicationController
  def new
    @team = Team.find params[:team_id]
    @report = Report.new
    @team.users.each do |user|
      ur = @report.user_reports.build
      ur.user_id = user.id
    end
  end
end

What I have now is that the user of the site chooses the Team. In the team are, of course, a bunch of Users. For each of them, a UserReport is to be added to the Report. In the new.html.haml, I would write this:

=fields_for :user_reports do |b|
  =b.hidden_field :user_id, user.id
  =user.name

And there is the problem. How can I get the user.name or the user.id or anything in this form builder? I need to output the user name there, because otherwise the site user wouldn’t be able to know which is who.

I do hope you understood my problem, I’m kind of desperate by now.

Answer 1

class ReportsController < ApplicationController
  def new
    @team = Team.find params[:team_id]
    @report = Report.new
    @urs = []
    @team.users.each do |user|
      ur = @report.user_reports.build
      ur.user_id = user.id
      @urs << ur
    end
  end
end

In your view:

= form_for @report do |f|
  =f.fields_for :user_reports, @urs do |b|
    =b.hidden_field :user_id
    =b.object.user.name