Add lists to group

Create group_list_controller to add lists to groups

lib/app/group.ex

@@ -25,6 +25,14 @@ defmodule App.Group do
     |> validate_required([:name])
   end
 
+  def changeset_with_lists(group, list_ids) do
+    lists = Repo.all(from l in List, where: l.id in ^list_ids)
+
+    group
+    |> change()
+    |> put_assoc(:lists, lists)
+  end
+
   def create_group(person_id, attrs) do
     person = Person.get_person!(person_id)
 
@@ -38,5 +46,12 @@ defmodule App.Group do
     Group
     |> Repo.get!(id)
     |> Repo.preload(people: from(p in Person, order_by: p.name))
+    |> Repo.preload(lists: from(l in List, order_by: l.name))
+  end
+
+  def update_group_with_lists(%Group{} = group, list_ids) do
+    group
+    |> Group.changeset_with_lists(list_ids)
+    |> Repo.update()
   end
 end

lib/app_web/controllers/group_list_controller.ex

@@ -0,0 +1,47 @@
+defmodule AppWeb.GroupListController do
+  use AppWeb, :controller
+  alias App.{Group, List}
+
+  def index(conn, %{"group_id" => group_id}) do
+    person_id = conn.assigns[:person][:id]
+    group = Group.get_group!(group_id)
+
+    lists =
+      List.list_person_lists(person_id)
+      |> Enum.concat(group.lists)
+      |> Enum.uniq_by(& &1.id)
+      |> Enum.map(&{&1.name, &1.id})
+
+    selected_list_ids = Enum.map(group.lists, & &1.id)
+
+    data = %{}
+    types = %{selected_lists: {:array, :string}}
+    params = %{selected_lists: selected_list_ids}
+
+    changeset =
+      {data, types}
+      |> Ecto.Changeset.cast(params, Map.keys(types))
+
+    render(conn, "index.html",
+      group: group,
+      lists: lists,
+      changeset: changeset
+    )
+  end
+
+  def create(conn, %{"group_id" => group_id} = params) do
+    group = Group.get_group!(group_id)
+
+    list_ids =
+      case params["group_lists"]["selected_lists"] do
+        "" -> []
+        ids -> ids
+      end
+
+    {:ok, _group} = Group.update_group_with_lists(group, list_ids)
+
+    conn
+    |> put_flash(:info, "Group's lists updated successfully.")
+    |> redirect(to: Routes.group_path(conn, :index))
+  end
+end

lib/app_web/controllers/group_member_controller.ex

@@ -1,15 +1,11 @@
 defmodule AppWeb.GroupMemberController do
   use AppWeb, :controller
-  alias App.{Group, Person}
+  alias App.{Group, Person, Repo}
   import Ecto.Changeset
 
-  # plug :permission_tag when action in [:edit, :update, :delete]
-
   def index(conn, %{"group_id" => group_id}) do
     group = Group.get_group!(group_id)
     changeset = Person.changeset(%Person{})
-    # person_id = conn.assigns[:person][:id] || 0
-    # tags = Tag.list_person_tags(person_id)
 
     render(conn, "index.html", changeset: changeset, group: group)
   end
@@ -22,12 +18,17 @@ defmodule AppWeb.GroupMemberController do
         changeset =
           %Person{name: name}
           |> change()
-          |> add_error(:name, "This name doesn't seem to exist")
+          |> add_error(:name, "Person's name not found")
           |> Map.put(:action, :insert)
 
         render(conn, "index.html", changeset: changeset, group: group)
 
       person ->
+        group
+        |> change()
+        |> put_assoc(:people, [person | group.people])
+        |> Repo.update()
+
         redirect(conn,
           to: Routes.group_group_member_path(conn, :index, group_id)
         )

lib/app_web/router.ex

@@ -41,14 +41,10 @@ defmodule AppWeb.Router do
     # manage groups
     resources "/groups", GroupController, except: [:show]
 
-    # edit and update list to group
-    resources "/groups", GroupController, only: [:show] do
-      resources "/lists", GroupListController, only: [:edit, :update]
-    end
-
     # edit and update group members
     resources "/groups", GroupController, only: [:show] do
       resources "/members", GroupMemberController, only: [:index, :create]
+      resources "/lists", GroupListController, only: [:index, :create]
     end
   end
 

lib/app_web/templates/group/index.html.heex

@@ -19,7 +19,7 @@
         <%= link "Members", to: Routes.group_group_member_path(@conn, :index, group) %>
       </.td>
       <.td>
-        <%= link "Lists", to: Routes.group_path(@conn, :edit, group) %>
+        <%= link "Lists", to: Routes.group_group_list_path(@conn, :index, group) %>
       </.td>
       <.td>
         <%= link "Edit", to: Routes.group_path(@conn, :edit, group) %>

lib/app_web/templates/group_list/index.html.heex

@@ -0,0 +1,20 @@
+<.container>
+<.h2 class="text-center mt-3">Edit Group's lists</.h2>
+
+<.form let={f} for={@changeset} action={Routes.group_group_list_path(@conn, :create, @group)} as={:group_lists} class="py-3">
+    <%= if @changeset.action do %>
+      <div class="alert alert-danger">
+        <p>Oops, something went wrong! Please check the errors below.</p>
+      </div>
+    <% end %>
+
+      <.form_field
+        type="checkbox_group"
+        form={f}
+        field={:selected_lists}
+        label="Lists"
+        options={@lists}
+        />
+    <.button type="submit" label="Save" />
+</.form>
+</.container>

lib/app_web/views/group_list_view.ex

@@ -0,0 +1,3 @@
+defmodule AppWeb.GroupListView do
+  use AppWeb, :view
+end