poc(batch_operations_controller): implement simple [not yet with procedure_presentation] action to create a batch operation

app/controllers/instructeurs/batch_operations_controller.rb

@@ -0,0 +1,34 @@
+module Instructeurs
+  class BatchOperationsController < ApplicationController
+    before_action :set_procedure
+    before_action :ensure_ownership!
+
+    def create
+      ActiveRecord::Base.transaction do
+        batch_operation = BatchOperation.create!(batch_operation_params.merge(instructeur: current_instructeur))
+        BatchOperationEnqueueAllJob.perform_later(batch_operation)
+      end
+      redirect_back(fallback_location: instructeur_procedure_url(@procedure.id))
+    end
+
+    private
+
+    def batch_operation_params
+      params.require(:batch_operation)
+        .permit(:operation, dossier_ids: []).tap do |params|
+              # TODO: filter dossiers_ids out of instructeurs.dossiers.ids
+            end
+    end
+
+    def set_procedure
+      @procedure = Procedure.find(params[:procedure_id])
+    end
+
+    def ensure_ownership!
+      if !current_instructeur.procedures.exists?(@procedure.id)
+        flash[:alert] = "Vous n’avez pas accès à cette démarche"
+        redirect_to root_path
+      end
+    end
+  end
+end