Display value from associated record?

I am trying to display a given value from a block of search data per result in the listing.

My code for the particular column is such

<% if result['primary_type'] === "resource" or result['primary_type'] === "digital_object" or result['primary_type'] === "accession" %>
  <td><%= result["sort_name"] %></td>
<% end %>

But the column shows blank. Here the first line from the search_data.

[{"id"=>"/repositories/2/digital_objects/98474", "title"=>"Memo To President Lyndon B. Johnson From McGeorge Bundy: Three More Wise Men", "primary_type"=>"digital_object", "types"=>["digital_object"], "json"=>"{\"lock_version\":0,\"digital_object_id\":\"0240322003\",\"title\":\"Memo To President Lyndon B. Johnson From McGeorge Bundy: Three More Wise Men\",\"publish\":true,\"restrictions\":false,\"created_by\":\"vlovelady\",\"last_modified_by\":\"vlovelady\",\"create_time\":\"2003-01-16T00:00:00Z\",\"system_mtime\":\"2015-12-23T10:52:06Z\",\"user_mtime\":\"2003-01-16T00:00:00Z\",\"suppressed\":false,\"asort1\":\"024\",\"asort2\":\"03\",\"asort3\":\"22\",\"asort4\":\"003\",\"pages\":\"1\",\"copyright_statement\":\"Copied from the Lyndon B. Johnson Presidential Library\",\"loc_room\":\"Stacks\",\"language\":\"eng\",\"digital_object_type\":\"text\",\"department\":\"archive\",\"jsonmodel_type\":\"digital_object\",\"external_ids\":[],\"subjects\":[],\"linked_events\":[],\"extents\":[],\"dates\":[{\"lock_version\":0,\"begin\":\"1966-01-27\",\"created_by\":\"vlovelady\",\"last_modified_by\":\"vlovelady\",\"create_time\":\"2003-01-16T00:00:00Z\",\"system_mtime\":\"2015-12-23T10:52:06Z\",\"user_mtime\":\"2003-01-16T00:00:00Z\",\"date_type\":\"single\",\"label\":\"other\",\"jsonmodel_type\":\"date\"},{\"lock_version\":0,\"begin\":\"1966-01-27\",\"end\":\"1966-01-28\",\"created_by\":\"vlovelady\",\"last_modified_by\":\"vlovelady\",\"create_time\":\"2003-01-16T00:00:00Z\",\"system_mtime\":\"2015-12-23T10:52:06Z\",\"user_mtime\":\"2003-01-16T00:00:00Z\",\"date_type\":\"bulk\",\"label\":\"other\",\"jsonmodel_type\":\"date\"}],\"external_documents\":[],\"rights_statements\":[],\"linked_agents\":[{\"role\":\"source\",\"relator\":\"dnr\",\"terms\":[],\"ref\":\"/agents/people/3964\",\"_resolved\":{\"lock_version\":0,\"publish\":true,\"created_by\":\"Collection\",\"last_modified_by\":\"Collection\",\"create_time\":\"2007-09-12T00:00:00Z\",\"system_mtime\":\"2015-12-23T09:43:24Z\",\"user_mtime\":\"2007-09-12T00:00:00Z\",\"jsonmodel_type\":\"agent_person\",\"agent_contacts\":[],\"linked_agent_roles\":[\"source\"],\"external_documents\":[],\"rights_statements\":[],\"notes\":[],\"dates_of_existence\":[],\"mailing_lists\":[],\"militarys\":[],\"civilians\":[],\"friends_memberships\":[],\"staffs\":[],\"names\":[{\"lock_version\":0,\"primary_name\":\"Larry Berman (Presidential Archives Research)\",\"rest_of_name\":\" \",\"fuller_form\":\"Larry Berman (Presidential Archives Research)\",\"dates\":\"-\",\"sort_name\":\"Larry Berman (Presidential Archives Research), (Larry Berman (Presidential Archives Research)),- (024) Larry Berman Collection (Presidential Archives Research)\",\"sort_name_auto_generate\":true,\"created_by\":\"Collection\",\"last_modified_by\":\"Collection\",\"create_time\":\"2007-09-12T00:00:00Z\",\"system_mtime\":\"2015-12-23T09:43:24Z\",\"user_mtime\":\"2007-09-12T00:00:00Z\",\"authorized\":true,\"is_display_name\":true,\"coll_num\":\"024\",\"coll_title\":\"Larry Berman Collection (Presidential Archives Research)\",\"source\":\"local\",\"rules\":\"local\",\"name_order\":\"direct\",\"jsonmodel_type\":\"name_person\",\"use_dates\":[]}],\"related_agents\":[],\"uri\":\"/agents/people/3964\",\"agent_type\":\"agent_person\",\"display_name\":{\"lock_version\":0,\"primary_name\":\"Larry Berman (Presidential Archives Research)\",\"rest_of_name\":\" \",\"fuller_form\":\"Larry Berman (Presidential Archives Research)\",\"dates\":\"-\",\"sort_name\":\"Larry Berman (Presidential Archives Research), (Larry Berman (Presidential Archives Research)),- (024) Larry Berman Collection (Presidential Archives Research)\",\"sort_name_auto_generate\":true,\"created_by\":\"Collection\",\"last_modified_by\":\"Collection\",\"create_time\":\"2007-09-12T00:00:00Z\",\"system_mtime\":\"2015-12-23T09:43:24Z\",\"user_mtime\":\"2007-09-12T00:00:00Z\",\"authorized\":true,\"is_display_name\":true,\"coll_num\":\"024\",\"coll_title\":\"Larry Berman Collection (Presidential Archives Research)\",\"source\":\"local\",\"rules\":\"local\",\"name_order\":\"direct\",\"jsonmodel_type\":\"name_person\",\"use_dates\":[]},\"title\":\"Larry Berman (Presidential Archives Research), (Larry Berman (Presidential Archives Research)),- (024) Larry Berman Collection (Presidential Archives Research)\",\"is_linked_to_published_record\":true}}],\"file_versions\":[{\"lock_version\":0,\"file_uri\":\"http://ift.tt/1J1mZVl\",\"publish\":true,\"create_time\":\"2015-12-23T12:30:14Z\",\"system_mtime\":\"2015-12-23T12:30:14Z\",\"user_mtime\":\"2015-12-23T12:30:14Z\",\"copyrighted\":false,\"folder_item\":\"item\",\"dpi\":\"200\",\"software_ver\":\"Adobe Acrobat 9.3\",\"file_format_name\":\"txt\",\"main_alt\":\"main\",\"jsonmodel_type\":\"file_version\",\"identifier\":\"85800\"}],\"notes\":[{\"jsonmodel_type\":\"note_digital_object\",\"persistent_id\":\"subj\",\"type\":\"note\",\"content\":[\"Thursday, January27. 1966, 3:45 PM MEMORANDUM FOR THE PRESIDENT: Subject: Three more Wieo Men I have talked today to Arthur Dean, Allen Dulles and Douglas Dillon. Acheson and Cowles are in Antigua; Rlack is out of the country; and Brad1 J\"],\"publish\":true},{\"jsonmodel_type\":\"note_digital_object\",\"persistent_id\":\"subs\",\"type\":\"note\",\"content\":[\"Arthur Dean Allen Dulles Douglas Dillon Debate over resumption of bombing bombing pause\"],\"publish\":false},{\"jsonmodel_type\":\"note_digital_object\",\"persistent_id\":\"cond\",\"type\":\"physdesc\",\"content\":[\"Good - \"],\"publish\":false}],\"linked_instances\":[],\"maps\":[],\"audiovisuals\":[],\"prdcls\":[],\"uri\":\"/repositories/2/digital_objects/98474\",\"repository\":{\"ref\":\"/repositories/2\"},\"tree\":{\"ref\":\"/repositories/2/digital_objects/98474/tree\"}}", "suppressed"=>false, "publish"=>true, "system_generated"=>false, "repository"=>"/repositories/2", "relator_enum_s"=>["dnr"], "type_enum_s"=>["note"], "role_enum_s"=>["source"], "source_enum_s"=>["local"], "rules_enum_s"=>["local"], "digital_object_type_enum_s"=>["text"], "language_enum_s"=>["eng"], "date_type_enum_s"=>["single"], "label_enum_s"=>["other"], "file_format_name_enum_s"=>["txt"], "name_order_enum_s"=>["direct"], "agents"=>["Larry Berman (Presidential Archives Research), (Larry Berman (Presidential Archives Research)),- (024) Larry Berman Collection (Presidential Archives Research)"], "agent_uris"=>["/agents/people/3964"], "created_by"=>"vlovelady", "last_modified_by"=>"vlovelady", "user_mtime"=>"2003-01-16T00:00:00Z", "system_mtime"=>"2015-12-23T10:52:06Z", "create_time"=>"2003-01-16T00:00:00Z", "digital_object_type"=>"text", "digital_object_id"=>"0240322003", "restrictions"=>"false", "uri"=>"/repositories/2/digital_objects/98474", "jsonmodel_type"=>"digital_object"}

How can I get the sort_name to display the data?

Thanks