Allow assignment of study groups for internal users

app/controllers/internal_users_controller.rb

@@ -6,6 +6,7 @@ class InternalUsersController < ApplicationController
   before_action :require_activation_token, only: :activate
   before_action :require_reset_password_token, only: :reset_password
   before_action :set_user, only: MEMBER_ACTIONS
+  before_action :collect_set_and_unset_study_group_memberships, only: MEMBER_ACTIONS + %i[create]
   after_action :verify_authorized, except: %i[activate forgot_password reset_password]
 
   def activate
@@ -73,7 +74,19 @@ class InternalUsersController < ApplicationController
   end
 
   def internal_user_params
-    params.require(:internal_user).permit(:consumer_id, :email, :name)
+    permitted_params = params.require(:internal_user).permit(:consumer_id, :email, :name, study_group_ids: []).presence || {}
+    checked_study_group_memberships = @study_group_memberships.select {|sgm| permitted_params[:study_group_ids]&.include? sgm.study_group.id.to_s }
+    removed_study_group_memberships = @study_group_memberships.reject {|sgm| permitted_params[:study_group_ids]&.include? sgm.study_group.id.to_s }
+
+    checked_study_group_memberships.each do |sgm|
+      sgm.role = params[:study_group_membership_roles][sgm.study_group.id.to_s][:role]
+      sgm.user = @user
+    end
+
+    permitted_params[:study_group_memberships] = checked_study_group_memberships
+    permitted_params.delete :study_group_ids
+    removed_study_group_memberships.map(&:destroy)
+    permitted_params
   end
   private :internal_user_params
 
@@ -85,6 +98,7 @@ class InternalUsersController < ApplicationController
   def new
     @user = InternalUser.new
     authorize!
+    collect_set_and_unset_study_group_memberships
   end
 
   def render_forgot_password_form
@@ -132,6 +146,19 @@ class InternalUsersController < ApplicationController
   end
   private :set_user
 
+  def collect_set_and_unset_study_group_memberships
+    @study_groups = policy_scope(StudyGroup)
+    @user ||= InternalUser.new # Only needed for the `create` action
+    checked_study_group_memberships = @user.study_group_memberships
+    checked_study_groups = checked_study_group_memberships.collect(&:study_group).sort.to_set
+    unchecked_study_groups = StudyGroup.all.order(name: :asc).to_set.subtract checked_study_groups
+    @study_group_memberships = checked_study_group_memberships + unchecked_study_groups.collect do |study_group|
+      StudyGroupMembership.new(user: @user, study_group: study_group)
+    end
+  end
+
+  private :collect_set_and_unset_study_group_memberships
+
   def show; end
 
   def update

app/models/internal_user.rb

@@ -11,6 +11,8 @@ class InternalUser < User
   validates :password, confirmation: true, if: -> { password_void? && validate_password? }, on: :update, presence: true
   validate :password_strength, if: -> { password_void? && validate_password? }, on: :update
 
+  accepts_nested_attributes_for :study_group_memberships
+
   def activated?
     activation_state == 'active'
   end

app/models/study_group_membership.rb

@@ -1,9 +1,17 @@
 # frozen_string_literal: true
 
 class StudyGroupMembership < ApplicationRecord
+  ROLES = %w[learner teacher].freeze
+
   belongs_to :user, polymorphic: true
   belongs_to :study_group
 
+  before_save :destroy_if_empty_study_group_or_user
+
+  def destroy_if_empty_study_group_or_user
+    destroy if study_group.blank? || user.blank?
+  end
+
   enum role: {
     learner: 0,
     teacher: 1,

app/views/internal_users/_form.html.slim

@@ -12,5 +12,27 @@
   .form-check
     label.form-check-label
       = f.check_box(:platform_admin, class: 'form-check-input')
-      = f.label(:platform_admin, t('activerecord.attributes.external_user.platform_admin'), class: 'form-label')
+      = f.label(:platform_admin, t('activerecord.attributes.internal_user.platform_admin'), class: 'form-label')
+
+  h2.mt-4 = t('internal_users.form.study_groups')
+  ul.list-unstyled.card-group
+    li.card
+      .card-header role="tab" id="heading"
+        a.file-heading data-bs-toggle="collapse" href="#study-group-collapse"
+          div.clearfix role="button"
+            span = t('internal_users.form.click_to_collapse')
+      .card-collapse.collapse id="study-group-collapse" role="tabpanel"
+        .table-responsive
+          table.table.overflow-hidden#study-groups-table
+            thead
+              tr
+                th = t('activerecord.attributes.study_group.selection')
+                th = t('activerecord.attributes.study_group.name')
+                th = t('activerecord.attributes.study_group_membership.role')
+              = collection_check_boxes :user, :study_group_ids, @study_group_memberships, :study_group_id, :id, {namespace: :internal_user} do |b|
+                tr
+                  td = b.check_box class: 'form-check-input', name: "internal_user[study_group_ids][]"
+                  td = b.object.study_group.name
+                  td = select "study_group_membership_roles[#{b.object.study_group.id}]", :role, StudyGroupMembership::ROLES.map { |role| [t("activerecord.attributes.study_group_membership.role_type.#{role}"), role] }, {selected: b.object.persisted? ? b.object.role : nil, include_blank: true}, class: 'form-control form-control-sm'
+
   .actions = render('shared/submit_button', f: f, object: @user)

config/locales/de.yml

@@ -119,6 +119,12 @@ de:
         consumer: Konsument
         members: Mitglieder
         member_count: Anzahl der Mitglieder
+        selection: Ausgewählt
+      study_group_membership:
+        role: Rolle
+        role_type:
+          learner: Lernender
+          teacher: Lehrender
       tag:
         name: Name
         usage: Verwendet
@@ -583,6 +589,9 @@ de:
       success: Sie haben Ihr Passwort erfolgreich geändert.
     show:
       link: Profil
+    form:
+      study_groups: Lerngruppen
+      click_to_collapse: Zum Aus-/Einklappen hier klicken...
   search:
     search_in_forum: "Probleme? Suche hier im Forum"
   locales:

config/locales/en.yml

@@ -119,6 +119,12 @@ en:
         consumer: Consumer
         members: Members
         member_count: Member Count
+        selection: Selected
+      study_group_membership:
+        role: Role
+        role_type:
+          learner: Learner
+          teacher: Teacher
       tag:
         name: Name
         usage: Used
@@ -573,6 +579,9 @@ en:
       headline: Complete Registration
       submit: Set Password
       success: You successfully completed your registration.
+    form:
+      study_groups: Study Groups
+      click_to_collapse: Click to expand/collapse...
     forgot_password:
       headline: Reset Password
       submit: Send Password Reset Instructions