Rails User>Team>Members

Question

I'm new to Rails, and I'm trying to build this in my app:

Signed Captain creates a Team (name, color, etc) then add Members in it. Members are automatically assigned to the Team created.

My signed Captain has a button to create a new Team on his profile, it goes to the team#new view. Once the team form is validated, the member#new is loaded to add members one by one to the team.

I set up the models relationships :

Captain:
has_many :teams
has_many :members through :team

Team: 
belongs_to :captain #captain_id
has_many :members

Member:
belongs_to :team #team_id
has_one :captain

I found how to add the captain_id inside the team table using devise and current_user, but I just can't figure out how to deal with the team_id once the team created. I would like to get the team_id value in the "add member" view and deal with my Member controller to save it with each member.

Answer 1

If you structure your routes in the following fashion you'll have access to the team and member details on member pages as well as a team id on the team pages:

# config/routes.rb
resources :teams do
  resources :members
end

# uncomment to have members viewable when not associate with a team in the url
# resources :members

You can route to a team using named routes: teams_path, team_path(@team) And for members: team_members_path(@team), team_member_path(@team, @member)

In the teams_controller you'll have access to params[:id] when a team id is provided. For instance, in the url /teams/1, params[:id] would hold the value 1.

In the members controller, you'll have params[:team_id] and params[:id] will hold the member id.

For example:

# app/controllers/teams_controller.rb
def show
  @team = Team.find params[:id]
end

# app/controllers/members_controller.rb
def index
  # finds the team and pre-loads members in the same query
  @team = Team.includes(:members).find(params[:team_id])
end

# /teams/1/members/2
def show
  @member = Member.find params[:id]
end

Answer 2

So we have a Card which contains multiple teammates

Using nested resources:

routes.rb :

resources :cards do 
resources :teammates 
end

teammate new view

<%= form_for [@card,@teammate] do |f| %>
...
<% end %>

Teammate controller

  def index
    @card = Card.includes(:teammates).find(params[:card_id])
    @teammates = Teammate.all
  end

  # GET /teammates/1
  # GET /teammates/1.json
  def show
    @teammate = Teammate.find(params[:id])
  end

  # GET /teammates/new
  def new
    @card = Card.find(params[:card_id])
    @teammate = Teammate.new
  end

  # GET /teammates/1/edit
  def edit
    @teammate = Teammate.find(params[:id])
  end

  # POST /teammates
  # POST /teammates.json
  def create
    @card = Card.find(params[:card_id])
    @teammate = Teammate.new(teammate_params)
    @teammate.card_id = params[:card_id]
    respond_to do |format|
      if @teammate.save
        format.html { redirect_to @teammate, notice: 'Teammate was successfully created.' }
        format.json { render action: 'show', status: :created, location: @teammate }
      else
        format.html { render action: 'new' }
        format.json { render json: @teammate.errors, status: :unprocessable_entity }
      end
    end
  end

I tried to put a before filter in members controller : before_filter :require_card private def require_card @teammate = Teammate.find(params[:id]) end

But it brings me errors so I just abandonned it

If proper ways exist to do the trick / improve my learning, I would love to know them so feel free to give me clues.

Thank you !