library users

app/controllers/library_users_controller.rb

@@ -0,0 +1,36 @@
+class LibraryUsersController < ApplicationController
+    def new
+      @library = Library.find(params[:library_id])
+      @library_user = @library.library_users.build
+    end
+
+    def index
+      @library = Library.find(params[:library_id])
+      @users = @library.users
+
+      respond_to do |format|
+        format.html # renders users.html.erb
+        format.json { render json: @users }
+      end
+    end
+
+    def create
+      @library = Library.find(params[:library_id])
+      @library_user = @library.library_users.build(library_user_params)
+
+      authorize @library_user
+
+      if @library_user.save
+        redirect_to library_library_users_path(@library), notice: 'Library user was successfully created.'
+      else
+        render :new
+      end
+    end
+
+    private
+
+    def library_user_params
+      params.require(:library_user).permit(:user_id)
+    end
+  end
+

app/helpers/library_users_helper.rb

@@ -0,0 +1,2 @@
+module LibraryUsersHelper
+end

app/models/library.rb

@@ -5,6 +5,6 @@ class Library < ApplicationRecord
   validates :name, presence: true
   belongs_to :user
 
-  has_many :library_users
+  has_many :library_users, dependent: :destroy
   has_many :users, through: :library_users
 end

app/policies/library_user_policy.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class LibraryUserPolicy < ApplicationPolicy
+  attr_reader :user, :library_user
+
+  def initialize(user, library_user)
+    @user = user
+    @library_user = library_user
+  end
+
+  def create?
+    user.admin?
+  end
+
+  def update?
+    false
+  end
+end

app/views/libraries/show.html.erb

@@ -6,7 +6,7 @@
       <% if policy(@library).edit? %>
         <%= link_to 'New Document', new_document_path(library_id: @library.id), class: "rounded-lg p-2 bg-sky-600 text-white" %>
         <%= link_to 'Edit', edit_library_path(@library), title: "Edit Library", class: "rounded-lg p-2 bg-sky-600 text-white" %>
-        <%= link_to 'Users', users_library_path(@library), class: "rounded-lg p-2 bg-sky-600 text-white" %>
+        <%= link_to 'Users', library_library_users_path(@library), class: "rounded-lg p-2 bg-sky-600 text-white" %>
       <% end %>
     </div>
   </div>

app/views/library_users/index.html.erb

@@ -0,0 +1,21 @@
+  <div><%= link_to @library.name, library_path(@library) %></div>
+
+<div class="flex justify-between items-center py-2">
+  <h1 class="font-bold text-3xl text-sky-800">Users</h1>
+  <% if policy(Library.new).create? %>
+    <%= link_to 'New', new_library_library_user_path(@library), class: "rounded-lg p-2 bg-sky-600 text-white block font-light" %>
+  <% end %>
+</div>
+
+<div class="bg-white shadow-md rounded-lg overflow-hidden">
+  <div class="grid grid-cols-3 gap-4 p-4 bg-gray-200 font-semibold">
+    <div>Email</div>
+    <div>Role</div>
+  </div>
+  <% @users.each do |user| %>
+    <div class="grid grid-cols-3 gap-4 p-4 border-b border-gray-200">
+      <div><%= user.email %></div>
+      <div><%= user.library_users.find_by(library: @library).role.capitalize %></div>
+    </div>
+  <% end %>
+</div>

app/views/library_users/new.html.erb

@@ -0,0 +1,27 @@
+<h1>New Library User</h1>
+
+<%= form_with(model: [@library, @library_user], class: "contents") do |form| %>
+  <% if @library_user.errors.any? %>
+    <div id="error_explanation" class="bg-red-50 text-red-500 px-3 py-2 font-medium rounded-lg mt-3">
+      <h2><%= pluralize(@library_user.errors.count, "error") %> prohibited this library_user from being saved:</h2>
+
+      <ul>
+        <% @library_user.errors.each do |error| %>
+          <li><%= error.full_message %></li>
+        <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <!-- User ID selection -->
+  <div class="my-5">
+    <%= form.label :user_id, style: "display: block" %>
+    <%= form.collection_select :user_id, User.order(email: :asc), :id, :email, { prompt: 'Select User' }, { class: "block shadow rounded-md border border-gray-200 outline-none px-3 py-2 mt-2 w-full" } %>
+  </div>
+
+  <div class="inline">
+    <%= form.submit "Save", class: "rounded-lg py-3 px-5 bg-sky-500 text-white inline-block font-medium cursor-pointer" %>
+  </div>
+<% end %>
+
+<%= link_to 'Back', library_path(@library), class: 'rounded-lg py-3 px-5 bg-gray-500 text-white inline-block font-medium cursor-pointer' %>

config/routes.rb

@@ -20,6 +20,7 @@
 
   # Nested Resources
   resources :libraries do
+    resources :library_users
     resources :documents
     member do
       get 'users'

spec/requests/library_users_spec.rb

@@ -0,0 +1,7 @@
+require 'rails_helper'
+
+RSpec.describe "LibraryUsers", type: :request do
+  describe "GET /index" do
+    pending "add some examples (or delete) #{__FILE__}"
+  end
+end