improve download releases button

app/controllers/contract_downloads_controller.rb

@@ -7,28 +7,41 @@ class ContractDownloadsController < ApplicationController
 
   def create
     authorize policy_scope(Download).create
-    fetch_releases
-    
-    download = @project.downloads.create!(release_type: params[:release_type])
+
+    download = @project.downloads.create!(release_type: release_type)
     other_downloads_in_progress = @project.downloads.unfinished_desc_order.offset(1)
 
     if other_downloads_in_progress.any?
-      in_progress_downloads_details = render_to_string "_other_pending_downloads", locals: { downloads: other_downloads_in_progress, release_type: params[:release_type] }, :layout => false
+      in_progress_downloads_details = render_to_string "_other_pending_downloads", locals: { downloads: other_downloads_in_progress, release_type: release_type }, :layout => false
       ProjectsChannel.broadcast_download_generation_update(download, in_progress_downloads_details)
     else
-      ProjectsChannel.broadcast_download_generation_update(download, I18n.t("contract_downloads.download.pending", release_type: params[:release_type].titleize))
+      ProjectsChannel.broadcast_download_generation_update(download, I18n.t("contract_downloads.download.pending", release_type: release_type.titleize))
     end
 
-    GenerateContractsZipJob.perform_later(@project, download, params[:release_type], @releases.ids)
+    GenerateContractsZipJob.perform_later(@project, download, release_type, release_ids, search_query, type_filter)
   end
 
   private
 
-  def fetch_releases
-    @releases = policy_scope(@project.public_send(releases))
+  def release_type
+    params[:release_type]
   end
 
-  def releases
-    params[:release_type].constantize.model_name.plural
+  def search_query
+    params[:search_query]
+  end
+
+  def type_filter
+    params[:type_filter]
+  end
+
+  def release_ids
+    JSON.parse(params[:release_ids])
+  rescue StandardError
+    []
+  end
+
+  def release_name(release_type)
+    release_type.constantize.model_name.plural
   end
 end