Add Admin UI

Add Admin interface for users with admin role, where they can manage other users’ roles as well as other data objects.

app/controllers/admin/conferences_controller.rb

+module Admin
+  class ConferencesController < ApplicationController
+    before_action :authenticate_user!
+    before_action :authorize_permission
+    before_action :set_conference, only: [ :edit, :update, :destroy ]
+
+    def index
+      @conferences = Conference.all
+    end
+
+    def new
+      @conference = Conference.new
+    end
+
+    def create
+      @conference = Conference.new(conference_params)
+
+      if @conference.save
+        redirect_to admin_conferences_path, notice: "Conference was successfully created."
+      else
+        render :new, status: :unprocessable_entity
+      end
+    end
+
+    def edit
+    end
+
+    def update
+      if @conference.update(conference_params)
+        redirect_to admin_conferences_path, notice: "Conference was successfully updated."
+      else
+        render :edit, status: :unprocessable_entity
+      end
+    end
+
+    def destroy
+      @conference.destroy
+      redirect_to admin_conferences_path, notice: "Conference was successfully deleted."
+    end
+
+    private
+
+    def authorize_permission
+      super("manage_conferences")
+    end
+
+    def set_conference
+      @conference = Conference.find_by(slug: params[:slug])
+    end
+
+    def conference_params
+      all_params = params.require(:conference).permit(:name, :slug, :starts_at, :ends_at, :url, :time_zone, :import_job_class).to_h
+
+      data_hash = @conference&.data&.dup || {}
+
+      if params[:data].present?
+        params[:data].each do |key, value|
+          data_hash[key] = value.presence
+        end
+      end
+
+      if params[:custom_field_keys].present? && params[:custom_field_values].present?
+        keys = params[:custom_field_keys]
+        values = params[:custom_field_values]
+
+        keys.each_with_index do |key, index|
+          next if key.blank?
+          data_hash[key] = values[index].presence
+        end
+      end
+
+      all_params[:data] = data_hash
+
+      all_params
+    end
+  end
+end