```ruby
class WantsController < ApplicationController
  def index
  end

  def show
  end

  def new
  end

  def create
  end

  def edit
  end

  def update
  end

  def destroy
  end

end
```

Add json crud routes to wants controller
user
```ruby
class WantsController < ApplicationController
  before_action :wants_find, only: [:index, :show, :edit, :destroy, :update]

  def index
    render json: @wants
  end

  def show
    render json: @want
  end

  def new
    @want = Want.new
  end

  def create
    @want = Want.new(user_id: params[:user_id], product_id: params[:id], max_price: params[:max_price], time_duration: params[:time_duration], fulfilled: false)
    if @want.save
      render json: @want, status: :created
    else
      render json: @want.errors.full_messages, status: :unprocessable_entity
    end
  end

  def edit
    render json: @want
  end

  def update
    @want = Want.update(user_id: params[:user_id], product_id: params[:id], max_price: params[:max_price], time_duration: params[:time_duration], fulfilled: false)
  end

  def destroy
    @want.destroy
  end

  private

  def wants_find
    @user = User.find(params[:user_id])
    @wants = Want.where(user_id: @user)
    @want = @wants.find(params[:id])
  end

end



# before_action :user_find, only: [:show, :edit, :destroy, :update]

#   def new
#     @user = User.new
#   end

#   def show
#     render json: {user: @user}
#   end

#   def create
#     @user = User.new(id: params[:id], name: params[:name], password: params[:password], email: params[:email])
#     if @user.save
#       render json: { user: @user }, status: :created
#     else
#       render json: @user.errors.full_messages, status: :unprocessable_entity
#     end
#   end

#   def edit
#     render json: {user: @user}
#   end



#   def update
#     @user.update(name: params[:name], password: params[:password], email: params[:email])
#   end



```
assistant