adjust filters

app/controllers/templates_controller.rb

@@ -4,51 +4,29 @@ class TemplatesController < ApplicationController
   load_and_authorize_resource :template
 
   before_action :load_base_template, only: %i[new create]
-  helper_method :created_at_range, :completed_at_range
 
   def show
     submissions = @template.submissions.accessible_by(current_ability)
     submissions = submissions.active if @template.archived_at.blank?
     submissions = Submissions.search(submissions, params[:q], search_values: true)
+    submissions = Submissions::Filter.call(submissions, current_user, params)
 
     @base_submissions = submissions
 
     submissions = submissions.pending if params[:status] == 'pending'
     submissions = submissions.completed if params[:status] == 'completed'
-    submissions = submissions.where(created_at: created_at_range) if created_at_range.present?
 
-    if completed_at_range.present?
-      submissions =
-        Submission.from(submissions.completed
-                                   .joins(:submitters)
-                                   .select('submissions.*, max(completed_at) AS last_completed_at')
-                                   .group('submissions.id'), :submissions)
-                  .where(last_completed_at: completed_at_range)
-    end
+    submissions = if params[:completed_at_from].present? || params[:completed_at_to].present?
+                    submissions.order(Submitter.arel_table[:completed_at].maximum.desc)
+                  else
+                    submissions.order(id: :desc)
+                  end
 
-    if params[:author].present?
-      submissions =
-        submissions.joins(:created_by_user)
-                   .where("concat_ws(' ',  NULLIF(users.first_name, ''),  NULLIF(last_name, '')) = ?", params[:author])
-    end
-
-    @pagy, @submissions = pagy(submissions.preload(submitters: :start_form_submission_events).order(id: :desc))
+    @pagy, @submissions = pagy(submissions.preload(submitters: :start_form_submission_events))
   rescue ActiveRecord::RecordNotFound
     redirect_to root_path
   end
 
-  def filter
-    return unless params[:filter] == 'author'
-
-    submissions = @template.submissions.accessible_by(current_ability)
-    submissions = submissions.active if @template.archived_at.blank?
-    @creator_names = submissions.includes(:created_by_user)
-                                .filter_map(&:created_by_user)
-                                .map(&:full_name)
-                                .uniq
-                                .sort
-  end
-
   def new
     @template.name = "#{@base_template.name} (#{I18n.t('clone')})" if @base_template
   end
@@ -176,12 +154,4 @@ class TemplatesController < ApplicationController
 
     @base_template = Template.accessible_by(current_ability).find_by(id: params[:base_template_id])
   end
-
-  def created_at_range
-    @created_at_range ||= date_range(:created_at)
-  end
-
-  def completed_at_range
-    @completed_at_range ||= date_range(:completed_at)
-  end
 end