Rails ActiveRecord - Users behave as Team after migrations - ruby-on-rails

Question

I have a users and a teams table. The users table has a column called team_id. But now the goal is to allow users to have multiple teams.
So I created the user_teams table using migrations like so:
class CreateUserteams < ActiveRecord::Migration[5.0]
def change
create_table :user_teams do |t|
t.integer :user_id
t.integer :team_id
t.timestamps
end
end
end
And my code is as follows:
models/user.rb
class User < ApplicationRecord
#belongs_to :team
# should now have multiple teams
has_many :user_teams
has_many :teams, through: :user_teams
models/team.rb
class Team < ApplicationRecord
has_many :members, foreign_key: "team_id", class_name: "User"
has_many :user_teams
has_many :users, through: :user_teams
models/user_teams.rb (new file)
class UserTeam < ApplicationRecord
belongs_to :user
belongs_to :team
end
(This works fine) To invite a user to join a team I send him an invite and if he accepts, I add him to the new users_team table using:
controllers/team_invites_controller.br
def accept
user = #team_invite.user
#team_invite.update(status: TeamInvite.statuses[:accepted])
user.team_id = #team_invite.team_id
user.company_id = #team_invite.team.company_id
user.teams << Team.find(user.team_id)
user.save(:validate => false)
respond_to do |format|
if user.shadow?
format.html {
redirect_to new_user_registration_path({
:email => user.email,
:role => user.main_role,
})
}
else
format.html { redirect_to dashboard_root_path, notice: 'Invite accepted' }
end
format.json { head :no_content }
end
end
The problem is, now "user" somehow became a Team and not a User, and it broke all of the code using "user.something". Also because of this I cannot access User methods because "user" is no longer a User but a Team.
For example, now:
<% if user.photo.exists? %>
gives:
undefined method `photo' for Team:0x00007f381dea4708
Or:
<% if current_user.teams.members.count > 1 %>
gives:
undefined method `members' for
Team::ActiveRecord_Associations_CollectionProxy:0x00007f3845954eb0 Did you mean? member?
Why does users.something now behaves as a team? I already re-did migrations and got the same error. Any idea how thatvhappened and how to fix it? How can I access users properties and methods correctly?
Thank you
EDIT
On
<% if user.photo.exists? %>
it's meant to display the image of another user and it gives the undefined method `photo' error. But if I use (although I don't want to)
<% if current_user.photo.exists? %>
It works. How come?

Answer 1

Your users have multiple teams and thus current_user.teams is not a Team anymore, it's a collection proxy, to access individual teams from there, depending on your logic you can use:
<% if current_user.teams.any?{|team| team.members.count > 1 } %>
(note that this code may be inefficient if there're many teams)