Allow users to apply for yearbook class

lib/yearbook/university.ex

@@ -295,4 +295,33 @@ defmodule Yearbook.University do
   def change_class(%Class{} = class, attrs \\ %{}) do
     Class.changeset(class, attrs)
   end
+
+  alias Yearbook.University.ClassStudent
+
+  def create_class_student(attrs \\ %{}) do
+    student = student_classes_count(attrs["student_id"], attrs["class_id"])
+
+    if student > 0 do
+      {:error, %Ecto.Changeset{}}
+    else
+      %ClassStudent{}
+      |> ClassStudent.changeset(attrs)
+      |> Repo.insert()
+    end
+  end
+
+  def student_classes_count(student_id, class_id) do
+    ClassStudent
+    |> where(student_id: ^student_id)
+    |> where(class_id: ^class_id)
+    |> Repo.all()
+    |> Enum.count()
+  end
+
+  def list_student_classes(student_id) do
+    ClassStudent
+    |> where(student_id: ^student_id)
+    |> where(accepted: true)
+    |> Repo.all()
+  end
 end

lib/yearbook/university/class_student.ex

@@ -11,14 +11,14 @@ defmodule Yearbook.University.ClassStudent do
   schema "classes_students" do
     belongs_to :class, University.Class
     belongs_to :student, Accounts.User
-
+    field :accepted, :boolean, default: false
     timestamps()
   end
 
   @doc false
   def changeset(class_student, attrs) do
     class_student
-    |> cast(attrs, [:class_id, :student_id])
+    |> cast(attrs, [:class_id, :student_id, :accepted])
     |> validate_required([:class_id, :student_id])
     |> unique_constraint([:class_id, :student_id])
   end

lib/yearbook_web/live/admin/class_live/form_component.ex → lib/yearbook_web/live/class_live/form_component.ex

@@ -1,4 +1,4 @@
-defmodule YearbookWeb.Admin.ClassLive.FormComponent do
+defmodule YearbookWeb.ClassLive.FormComponent do
   @moduledoc false
   use YearbookWeb, :live_component
 

lib/yearbook_web/live/admin/class_live/index.ex → lib/yearbook_web/live/class_live/index.ex

@@ -1,4 +1,4 @@
-defmodule YearbookWeb.Admin.ClassLive.Index do
+defmodule YearbookWeb.ClassLive.Index do
   @moduledoc false
   use YearbookWeb, :live_view
 

lib/yearbook_web/live/admin/class_live/index.html.heex → lib/yearbook_web/live/class_live/index.html.heex

@@ -3,18 +3,20 @@
     <div class="sm:flex-auto">
       <h1 class="text-xl font-semibold text-gray-900">Lista de Turmas</h1>
     </div>
-    <div class="mt-4 sm:mt-0 sm:ml-16 sm:flex-none">
-      <%= live_patch to: Routes.admin_class_index_path(@socket, :new) do %>
-        <button type="button" class="inline-flex items-center justify-center rounded-md border border-transparent bg-orange-600 px-4 py-2 text-sm font-medium text-white shadow-sm hover:bg-orange-700 focus:outline-none focus:ring-2 focus:ring-orange-500 focus:ring-offset-2 sm:w-auto">
-          Nova Turma
-        </button>
-      <% end %>
-    </div>
+    <%= if assigns[:current_user] && (@current_user.permissions == [:admin, :sysadmin] || @current_user.permissions == [:admin] ||  @current_user.permissions == [:sysadmin]) do %>
+      <div class="mt-4 sm:mt-0 sm:ml-16 sm:flex-none">
+        <%= live_patch to: Routes.admin_class_index_path(@socket, :new) do %>
+          <button type="button" class="inline-flex items-center justify-center rounded-md border border-transparent bg-orange-600 px-4 py-2 text-sm font-medium text-white shadow-sm hover:bg-orange-700 focus:outline-none focus:ring-2 focus:ring-orange-500 focus:ring-offset-2 sm:w-auto">
+            Nova Turma
+          </button>
+        <% end %>
+      </div>
+    <% end %>
   </div>
 
   <%= if @live_action in [:new, :edit] do %>
-    <.modal return_to={Routes.admin_class_index_path(@socket, :index)}>
-      <.live_component module={YearbookWeb.Admin.ClassLive.FormComponent} id={@class.id || :new} title={@page_title} action={@live_action} class={@class} return_to={Routes.admin_class_index_path(@socket, :index)} />
+    <.modal return_to={Routes.class_index_path(@socket, :index)}>
+      <.live_component module={YearbookWeb.ClassLive.FormComponent} id={@class.id || :new} title={@page_title} action={@live_action} class={@class} return_to={Routes.class_index_path(@socket, :index)} />
     </.modal>
   <% end %>
 
@@ -46,15 +48,16 @@
             </td>
             <td class="py-4 pl-3 pr-4 text-right text-sm font-medium sm:pr-6">
               <%= live_redirect to: Routes.yearbook_show_path(@socket, :show, class), class: "text-orange-600 hover:text-orange-900" do %>
-                Show<span class="sr-only"></span>
-              <% end %>
-
-              <%= live_patch to: Routes.admin_class_index_path(@socket, :edit, class), class: "text-orange-600 hover:text-orange-900" do %>
-                Edit<span class="sr-only"></span>
+                Ver<span class="sr-only"></span>
               <% end %>
+              <%= if assigns[:current_user] && (@current_user.permissions == [:admin, :sysadmin] || @current_user.permissions == [:admin] ||  @current_user.permissions == [:sysadmin]) do %>
+                <%= live_patch to: Routes.admin_class_index_path(@socket, :edit, class), class: "text-orange-600 hover:text-orange-900" do %>
+                  Edit<span class="sr-only"></span>
+                <% end %>
 
-              <%= link to: "#", phx_click: "delete", phx_value_id: class.id, data: [confirm: "Are you sure?"], class: "text-orange-600 hover:text-orange-900" do %>
-                Delete<span class="sr-only">Delete</span>
+                <%= link to: "#", phx_click: "delete", phx_value_id: class.id, data: [confirm: "Are you sure?"], class: "text-orange-600 hover:text-orange-900" do %>
+                  Delete<span class="sr-only">Delete</span>
+                <% end %>
               <% end %>
             </td>
           </tr>

lib/yearbook_web/live/admin/class_live/show.ex → lib/yearbook_web/live/class_live/show.ex

@@ -1,4 +1,4 @@
-defmodule YearbookWeb.Admin.ClassLive.Show do
+defmodule YearbookWeb.ClassLive.Show do
   @moduledoc false
   use YearbookWeb, :live_view
 

lib/yearbook_web/live/admin/class_live/show.html.heex → lib/yearbook_web/live/class_live/show.html.heex

@@ -3,7 +3,7 @@
 
   <%= if @live_action in [:edit] do %>
     <.modal return_to={Routes.admin_class_show_path(@socket, :show, @class)}>
-      <.live_component module={YearbookWeb.Admin.ClassLive.FormComponent} id={@class.id} title={@page_title} action={@live_action} class={@class} return_to={Routes.admin_class_show_path(@socket, :show, @class)} />
+      <.live_component module={YearbookWeb.ClassLive.FormComponent} id={@class.id} title={@page_title} action={@live_action} class={@class} return_to={Routes.admin_class_show_path(@socket, :show, @class)} />
     </.modal>
   <% end %>
 
@@ -14,5 +14,5 @@
     </li>
   </ul>
 
-  <span><%= live_patch("Edit", to: Routes.admin_class_show_path(@socket, :edit, @class), class: "button") %></span> | <span><%= live_redirect("Back", to: Routes.admin_class_index_path(@socket, :index)) %></span>
+  <span><%= live_patch("Edit", to: Routes.admin_class_show_path(@socket, :edit, @class), class: "button") %></span> | <span><%= live_redirect("Back", to: Routes.class_index_path(@socket, :index)) %></span>
 </div>

lib/yearbook_web/live/yearbook_live/show.ex

@@ -10,6 +10,29 @@ defmodule YearbookWeb.YearbookLive.Show do
     {:ok, socket}
   end
 
+  @impl true
+  def handle_event("apply", _payload, socket) do
+    attrs = %{
+      "class_id" => socket.assigns.class.id,
+      "student_id" => socket.assigns.current_user.id,
+      "accepted" => false
+    }
+
+    case University.create_class_student(attrs) do
+      {:ok, _class_student} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "Applied to class successfully")
+         |> push_redirect(to: Routes.class_index_path(socket, :index))}
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        {:noreply,
+         assign(socket, :changeset, changeset)
+         |> put_flash(:error, "You have already applied to this class")
+         |> push_redirect(to: Routes.class_index_path(socket, :index))}
+    end
+  end
+
   @impl true
   def handle_params(%{"class_id" => id}, _, socket) do
     class = University.get_class!(id, [:students, :degree, :academic_year])
@@ -19,4 +42,10 @@ defmodule YearbookWeb.YearbookLive.Show do
      |> assign(:page_title, class.degree.name)
      |> assign(:class, class)}
   end
+
+  defp is_accepted?(student, class) do
+    classes = University.list_student_classes(student)
+
+    Enum.any?(classes, fn cs -> cs.accepted == true && cs.class_id == class end)
+  end
 end

lib/yearbook_web/live/yearbook_live/show.html.heex

@@ -10,48 +10,57 @@
 </div>
 <div class="mx-auto py-12 px-4 text-center sm:px-6 lg:px-8">
   <div class="space-y-8 sm:space-y-12">
+    <%= if @current_user && Yearbook.University.list_student_classes(@current_user.id) == [] &&  (@current_user.permissions != [:admin, :sysadmin] || @current_user.permissions != [:admin] ||  @current_user.permissions != [:sysadmin]) do %>
+      <div class="flex mx-auto max-w-7xl">
+        <button class="inline-flex items-center justify-center rounded-md border border-transparent bg-orange-600 px-4 py-2 text-sm font-medium text-white shadow-sm hover:bg-orange-700 focus:outline-none focus:ring-2 focus:ring-orange-500 focus:ring-offset-2 sm:w-auto" phx-click="apply">
+          Pertencer
+        </button>
+      </div>
+    <% end %>
     <ul role="list" class="mx-auto space-y-16 sm:grid sm:grid-cols-2 sm:gap-16 sm:space-y-0 lg:grid-cols-4 lg:max-w-7xl">
       <%= for student <- @class.students do %>
-        <li>
-          <div class="space-y-6">
-            <%= if is_nil(student.avatar) do %>
-              <div>
-                <span class="inline-flex justify-center items-center w-40 h-40 xl:w-56 xl:h-56 bg-gray-500 rounded-full">
-                  <span class="text-5xl font-medium leading-none text-white"><%= extract_initials(student.name) %></span>
-                </span>
+        <%= if is_accepted?(student.id, @class.id) do %>
+          <li>
+            <div class="space-y-6">
+              <%= if is_nil(student.avatar) do %>
+                <div>
+                  <span class="inline-flex justify-center items-center w-40 h-40 xl:w-56 xl:h-56 bg-gray-500 rounded-full">
+                    <span class="text-5xl font-medium leading-none text-white"><%= extract_initials(student.name) %></span>
+                  </span>
+                </div>
+              <% else %>
+                <img class="mx-auto h-40 w-40 rounded-full xl:w-56 xl:h-56" src={Uploaders.Avatar.url({student.avatar, student}, :thumb)} alt="" />
+              <% end %>
+              <div class="space-y-2">
+                <div class="text-lg leading-6 font-medium space-y-1">
+                  <h3><%= student.name %></h3>
+                </div>
+                <ul role="list" class="flex justify-center space-x-5">
+                  <li>
+                    <a href="#" class="text-gray-400 hover:text-gray-500">
+                      <span class="sr-only">Twitter</span>
+                      <svg class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" aria-hidden="true">
+                        <path d="M6.29 18.251c7.547 0 11.675-6.253 11.675-11.675 0-.178 0-.355-.012-.53A8.348 8.348 0 0020 3.92a8.19 8.19 0 01-2.357.646 4.118 4.118 0 001.804-2.27 8.224 8.224 0 01-2.605.996 4.107 4.107 0 00-6.993 3.743 11.65 11.65 0 01-8.457-4.287 4.106 4.106 0 001.27 5.477A4.073 4.073 0 01.8 7.713v.052a4.105 4.105 0 003.292 4.022 4.095 4.095 0 01-1.853.07 4.108 4.108 0 003.834 2.85A8.233 8.233 0 010 16.407a11.616 11.616 0 006.29 1.84" />
+                      </svg>
+                    </a>
+                  </li>
+                  <li>
+                    <a href="#" class="text-gray-400 hover:text-gray-500">
+                      <span class="sr-only">LinkedIn</span>
+                      <svg class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" aria-hidden="true">
+                        <path
+                          fill-rule="evenodd"
+                          d="M16.338 16.338H13.67V12.16c0-.995-.017-2.277-1.387-2.277-1.39 0-1.601 1.086-1.601 2.207v4.248H8.014v-8.59h2.559v1.174h.037c.356-.675 1.227-1.387 2.526-1.387 2.703 0 3.203 1.778 3.203 4.092v4.711zM5.005 6.575a1.548 1.548 0 11-.003-3.096 1.548 1.548 0 01.003 3.096zm-1.337 9.763H6.34v-8.59H3.667v8.59zM17.668 1H2.328C1.595 1 1 1.581 1 2.298v15.403C1 18.418 1.595 19 2.328 19h15.34c.734 0 1.332-.582 1.332-1.299V2.298C19 1.581 18.402 1 17.668 1z"
+                          clip-rule="evenodd"
+                        />
+                      </svg>
+                    </a>
+                  </li>
+                </ul>
               </div>
-            <% else %>
-              <img class="mx-auto h-40 w-40 rounded-full xl:w-56 xl:h-56" src={Uploaders.Avatar.url({student.avatar, student}, :thumb)} alt="" />
-            <% end %>
-            <div class="space-y-2">
-              <div class="text-lg leading-6 font-medium space-y-1">
-                <h3><%= student.name %></h3>
-              </div>
-              <ul role="list" class="flex justify-center space-x-5">
-                <li>
-                  <a href="#" class="text-gray-400 hover:text-gray-500">
-                    <span class="sr-only">Twitter</span>
-                    <svg class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" aria-hidden="true">
-                      <path d="M6.29 18.251c7.547 0 11.675-6.253 11.675-11.675 0-.178 0-.355-.012-.53A8.348 8.348 0 0020 3.92a8.19 8.19 0 01-2.357.646 4.118 4.118 0 001.804-2.27 8.224 8.224 0 01-2.605.996 4.107 4.107 0 00-6.993 3.743 11.65 11.65 0 01-8.457-4.287 4.106 4.106 0 001.27 5.477A4.073 4.073 0 01.8 7.713v.052a4.105 4.105 0 003.292 4.022 4.095 4.095 0 01-1.853.07 4.108 4.108 0 003.834 2.85A8.233 8.233 0 010 16.407a11.616 11.616 0 006.29 1.84" />
-                    </svg>
-                  </a>
-                </li>
-                <li>
-                  <a href="#" class="text-gray-400 hover:text-gray-500">
-                    <span class="sr-only">LinkedIn</span>
-                    <svg class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" aria-hidden="true">
-                      <path
-                        fill-rule="evenodd"
-                        d="M16.338 16.338H13.67V12.16c0-.995-.017-2.277-1.387-2.277-1.39 0-1.601 1.086-1.601 2.207v4.248H8.014v-8.59h2.559v1.174h.037c.356-.675 1.227-1.387 2.526-1.387 2.703 0 3.203 1.778 3.203 4.092v4.711zM5.005 6.575a1.548 1.548 0 11-.003-3.096 1.548 1.548 0 01.003 3.096zm-1.337 9.763H6.34v-8.59H3.667v8.59zM17.668 1H2.328C1.595 1 1 1.581 1 2.298v15.403C1 18.418 1.595 19 2.328 19h15.34c.734 0 1.332-.582 1.332-1.299V2.298C19 1.581 18.402 1 17.668 1z"
-                        clip-rule="evenodd"
-                      />
-                    </svg>
-                  </a>
-                </li>
-              </ul>
             </div>
-          </div>
-        </li>
+          </li>
+        <% end %>
       <% end %>
     </ul>
   </div>

lib/yearbook_web/router.ex

@@ -23,7 +23,6 @@ defmodule YearbookWeb.Router do
 
   scope "/", YearbookWeb do
     pipe_through :browser
-
     get "/", PageController, :index
     get "/contacts", PageController, :contacts
     get "/terms", PageController, :terms
@@ -59,6 +58,15 @@ defmodule YearbookWeb.Router do
 
     live_session :logged_in, on_mount: [{YearbookWeb.Hooks, :current_user}] do
       live "/yearbook/:class_id", YearbookLive.Show, :show
+      live "/classes", ClassLive.Index, :index
+
+      scope "/admin", as: :admin do
+        pipe_through :require_admin_user
+
+        live "/classes/new", ClassLive.Index, :new
+        live "/classes/:id/edit", ClassLive.Index, :edit
+        live "/classes/:id/show/edit", ClassLive.Show, :edit
+      end
 
       scope "/admin", Admin, as: :admin do
         pipe_through :require_admin_user
@@ -74,11 +82,6 @@ defmodule YearbookWeb.Router do
         live "/degrees/:id/edit", DegreeLive.Index, :edit
         live "/degrees/:id", DegreeLive.Show, :show
         live "/degrees/:id/show/edit", DegreeLive.Show, :edit
-
-        live "/classes", ClassLive.Index, :index
-        live "/classes/new", ClassLive.Index, :new
-        live "/classes/:id/edit", ClassLive.Index, :edit
-        live "/classes/:id/show/edit", ClassLive.Show, :edit
       end
     end
   end

lib/yearbook_web/templates/layout/_auth_menu.html.heex

@@ -1,4 +1,4 @@
-<%= if @current_user do %>
+<%= if assigns[:current_user] do %>
   <div href="#" class="block flex-shrink-0 group">
     <div class="flex items-center">
       <%= if is_nil(@current_user.avatar) do %>

lib/yearbook_web/templates/layout/_header.html.heex

@@ -4,7 +4,7 @@
       <div class="flex items-center">
         <a href="/">
           <span class="sr-only">CeSIUM</span>
-          <%= if @current_user do %>
+          <%= if assigns[:current_user] do %>
             <img class="w-auto h-10" src={Routes.static_path(YearbookWeb.Endpoint, "/images/logo-WHITE.svg")} alt="CeSIUM's Logo" />
           <% else %>
             <img class="w-auto h-10" src={Routes.static_path(YearbookWeb.Endpoint, "/images/cesium-WHITE.svg")} alt="CeSIUM's Logo" />

lib/yearbook_web/views/layout_view.ex

@@ -25,7 +25,7 @@ defmodule YearbookWeb.LayoutView do
       },
       %{
         title: "Turmas",
-        path: Routes.admin_class_index_path(@conn, :index)
+        path: Routes.class_index_path(@conn, :index)
       }
     ]
   end

priv/repo/migrations/20220708135025_create_classes_students.exs

@@ -6,7 +6,7 @@ defmodule Yearbook.Repo.Migrations.CreateClassesStudents do
       add :id, :binary_id, primary_key: true
       add :class_id, references(:classes, on_delete: :nothing, type: :binary_id)
       add :student_id, references(:users, on_delete: :nothing, type: :binary_id)
-
+      add :accepted, :boolean, default: false
       timestamps()
     end
 

priv/repo/seeds.exs

@@ -136,7 +136,7 @@ for degree <- [lei, mei, miei, dei],
       |> Repo.update!()
 
     %ClassStudent{}
-    |> ClassStudent.changeset(%{student_id: student.id, class_id: class.id})
+    |> ClassStudent.changeset(%{student_id: student.id, class_id: class.id, accepted: true})
     |> Repo.insert!()
   end)
 end