====== Book collection Navigation Bar by Year======
\\
{{ :reloaded:bookcollectionnavbarbyyear.png?nolink&400 |}}

\\
Enable Views block on book collection you want navigation bar.
\\
An example: [[http://archive.digibess.eu/islandora/object/ircres%3Alantichi|here]]
\\
\\
NOTE: export can include some unused fields that could be removed.

  * **Views Export**
<WRAP prewrap center>
<code>
$view = new view();
$view->name = 'collectionbydate';
$view->description = '';
$view->tag = 'default';
$view->base_table = 'islandora_solr';
$view->human_name = 'collectionBYdate';
$view->core = 7;
$view->api_version = '3.0';
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

/* Display: Master */
$handler = $view->new_display('default', 'Master', 'default');
$handler->display->display_options['title'] = 'Collection by Date';
$handler->display->display_options['use_more_always'] = FALSE;
$handler->display->display_options['access']['type'] = 'none';
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'some';
$handler->display->display_options['pager']['options']['items_per_page'] = '0';
$handler->display->display_options['pager']['options']['offset'] = '0';
$handler->display->display_options['style_plugin'] = 'views_nested_accordion';
$handler->display->display_options['style_options']['grouping'] = array(
  0 => array(
    'field' => 'dc.date_dt',
    'rendered' => 1,
    'rendered_strip' => 0,
  ),
  1 => array(
    'field' => 'dc.title',
    'rendered' => 1,
    'rendered_strip' => 0,
  ),
);
$handler->display->display_options['style_options']['row_class_special'] = FALSE;
$handler->display->display_options['style_options']['use-grouping-header'] = 1;
$handler->display->display_options['style_options']['collapsible'] = 1;
$handler->display->display_options['style_options']['row-start-open'] = 'none';
$handler->display->display_options['style_options']['animated'] = 'none';
$handler->display->display_options['style_options']['nestedaccordion'] = 1;
$handler->display->display_options['row_plugin'] = 'fields';
/* Field: Islandora Solr: dc.date_dt */
$handler->display->display_options['fields']['dc.date_dt']['id'] = 'dc.date_dt';
$handler->display->display_options['fields']['dc.date_dt']['table'] = 'islandora_solr';
$handler->display->display_options['fields']['dc.date_dt']['field'] = 'dc.date_dt';
$handler->display->display_options['fields']['dc.date_dt']['label'] = '';
$handler->display->display_options['fields']['dc.date_dt']['exclude'] = TRUE;
$handler->display->display_options['fields']['dc.date_dt']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['dc.date_dt']['link_to_object'] = 0;
$handler->display->display_options['fields']['dc.date_dt']['date_format'] = 'custom';
$handler->display->display_options['fields']['dc.date_dt']['custom_date_format'] = 'Y';
/* Field: Islandora Solr: dc.title */
$handler->display->display_options['fields']['dc.title']['id'] = 'dc.title';
$handler->display->display_options['fields']['dc.title']['table'] = 'islandora_solr';
$handler->display->display_options['fields']['dc.title']['field'] = 'dc.title';
$handler->display->display_options['fields']['dc.title']['label'] = '';
$handler->display->display_options['fields']['dc.title']['exclude'] = TRUE;
$handler->display->display_options['fields']['dc.title']['element_type'] = 'p';
$handler->display->display_options['fields']['dc.title']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['dc.title']['link_to_object'] = 1;
/* Field: Islandora Solr: PID */
$handler->display->display_options['fields']['PID']['id'] = 'PID';
$handler->display->display_options['fields']['PID']['table'] = 'islandora_solr';
$handler->display->display_options['fields']['PID']['field'] = 'PID';
$handler->display->display_options['fields']['PID']['label'] = '';
$handler->display->display_options['fields']['PID']['alter']['alter_text'] = TRUE;
$handler->display->display_options['fields']['PID']['alter']['text'] = 'Read';
$handler->display->display_options['fields']['PID']['alter']['make_link'] = TRUE;
$handler->display->display_options['fields']['PID']['alter']['path'] = 'http://archive.digibess.eu/islandora/object/[PID]';
$handler->display->display_options['fields']['PID']['element_type'] = 'h5';
$handler->display->display_options['fields']['PID']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['PID']['hide_empty'] = TRUE;
$handler->display->display_options['fields']['PID']['link_to_object'] = 0;
/* Field: Islandora Solr: dc.creator */
$handler->display->display_options['fields']['dc.creator']['id'] = 'dc.creator';
$handler->display->display_options['fields']['dc.creator']['table'] = 'islandora_solr';
$handler->display->display_options['fields']['dc.creator']['field'] = 'dc.creator';
$handler->display->display_options['fields']['dc.creator']['label'] = 'Creator';
$handler->display->display_options['fields']['dc.creator']['element_label_type'] = 'h5';
$handler->display->display_options['fields']['dc.creator']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['dc.creator']['hide_empty'] = TRUE;
$handler->display->display_options['fields']['dc.creator']['link_to_object'] = 0;
/* Field: Islandora Solr: dc.description */
$handler->display->display_options['fields']['dc.description']['id'] = 'dc.description';
$handler->display->display_options['fields']['dc.description']['table'] = 'islandora_solr';
$handler->display->display_options['fields']['dc.description']['field'] = 'dc.description';
$handler->display->display_options['fields']['dc.description']['label'] = 'Description';
$handler->display->display_options['fields']['dc.description']['exclude'] = TRUE;
$handler->display->display_options['fields']['dc.description']['element_label_type'] = 'h5';
$handler->display->display_options['fields']['dc.description']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['dc.description']['hide_empty'] = TRUE;
$handler->display->display_options['fields']['dc.description']['link_to_object'] = 0;
/* Field: Global: PHP */
$handler->display->display_options['fields']['php']['id'] = 'php';
$handler->display->display_options['fields']['php']['table'] = 'views';
$handler->display->display_options['fields']['php']['field'] = 'php';
$handler->display->display_options['fields']['php']['label'] = 'Description';
$handler->display->display_options['fields']['php']['element_label_type'] = 'h5';
$handler->display->display_options['fields']['php']['hide_empty'] = TRUE;
$handler->display->display_options['fields']['php']['use_php_setup'] = 0;
$handler->display->display_options['fields']['php']['php_output'] = '<?php
if (isset($row->{\'dc.description\'})) {
foreach ($row->{\'dc.description\'} as $descrizione) {  
if (!($descrizione[0] == "-")) {
print $descrizione.\'<BR />\';
}
}
}
?>';
$handler->display->display_options['fields']['php']['use_php_click_sortable'] = '0';
$handler->display->display_options['fields']['php']['php_click_sortable'] = '';
/* Field: Global: PHP */
$handler->display->display_options['fields']['php_1']['id'] = 'php_1';
$handler->display->display_options['fields']['php_1']['table'] = 'views';
$handler->display->display_options['fields']['php_1']['field'] = 'php';
$handler->display->display_options['fields']['php_1']['label'] = 'Table of contents';
$handler->display->display_options['fields']['php_1']['element_label_type'] = 'h5';
$handler->display->display_options['fields']['php_1']['hide_empty'] = TRUE;
$handler->display->display_options['fields']['php_1']['use_php_setup'] = 0;
$handler->display->display_options['fields']['php_1']['php_output'] = '<?php
if (isset($row->{\'dc.description\'})) {
foreach ($row->{\'dc.description\'} as $descrizione) {  
if ($descrizione[0] == "-") {
print \'<small>&#8226; <a href="/islandora/object/\'.$row->PID.\'#page/\'.(substr($descrizione, strrpos($descrizione,\'#\')+1) %2 ==0 ? substr($descrizione, strrpos($descrizione,\'#\')+1) :  substr($descrizione, strrpos($descrizione,\'#\')+1)-1).\'/mode/2up">\'.substr($descrizione,2, strrpos($descrizione,\'#\')-3).\'</a><BR /></small>\';
//print \'<small>- <a href="/islandora/object/\'.$row->PID.\'#page/\'.(substr($descrizione, strrpos($descrizione,\'#\')+1) %2 ==0 ? substr($descrizione, strrpos($descrizione,\'#\')+1) :  substr($descrizione, strrpos($descrizione,\'#\')+1)-1).\'/mode/2up">\'.substr($descrizione,2, strrpos($descrizione,\'#\')-3).\'</a> \'.substr($descrizione, strrpos($descrizione,\'#\')+1).\'<BR /></small>\';
}
}
}
?>';
$handler->display->display_options['fields']['php_1']['use_php_click_sortable'] = '0';
$handler->display->display_options['fields']['php_1']['php_click_sortable'] = '';
/* Field: Islandora Solr: dc.subject */
$handler->display->display_options['fields']['dc.subject']['id'] = 'dc.subject';
$handler->display->display_options['fields']['dc.subject']['table'] = 'islandora_solr';
$handler->display->display_options['fields']['dc.subject']['field'] = 'dc.subject';
$handler->display->display_options['fields']['dc.subject']['label'] = 'Subject';
$handler->display->display_options['fields']['dc.subject']['element_label_type'] = 'h5';
$handler->display->display_options['fields']['dc.subject']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['dc.subject']['hide_empty'] = TRUE;
$handler->display->display_options['fields']['dc.subject']['link_to_object'] = 0;
/* Sort criterion: Islandora Solr: dc.date_dt */
$handler->display->display_options['sorts']['dc.date_dt']['id'] = 'dc.date_dt';
$handler->display->display_options['sorts']['dc.date_dt']['table'] = 'islandora_solr';
$handler->display->display_options['sorts']['dc.date_dt']['field'] = 'dc.date_dt';
$handler->display->display_options['sorts']['dc.date_dt']['expose']['label'] = 'Year';
/* Contextual filter: Islandora Solr: RELS_EXT_isMemberOfCollection_uri_s */
$handler->display->display_options['arguments']['RELS_EXT_isMemberOfCollection_uri_s']['id'] = 'RELS_EXT_isMemberOfCollection_uri_s';
$handler->display->display_options['arguments']['RELS_EXT_isMemberOfCollection_uri_s']['table'] = 'islandora_solr';
$handler->display->display_options['arguments']['RELS_EXT_isMemberOfCollection_uri_s']['field'] = 'RELS_EXT_isMemberOfCollection_uri_s';
$handler->display->display_options['arguments']['RELS_EXT_isMemberOfCollection_uri_s']['default_action'] = 'default';
$handler->display->display_options['arguments']['RELS_EXT_isMemberOfCollection_uri_s']['default_argument_type'] = 'php';
$handler->display->display_options['arguments']['RELS_EXT_isMemberOfCollection_uri_s']['default_argument_options']['code'] = '$current_url = check_plain(request_uri());
$sub=explode("/", $current_url, 4);
$subsub=explode("?", $sub[3], 2);
$fullPID="info:fedora/".urldecode($subsub[0]);
$prova = "info:fedora/fgramsci:sisifo";
return $fullPID;';
$handler->display->display_options['arguments']['RELS_EXT_isMemberOfCollection_uri_s']['summary']['number_of_records'] = '0';
$handler->display->display_options['arguments']['RELS_EXT_isMemberOfCollection_uri_s']['summary']['format'] = 'default_summary';
$handler->display->display_options['arguments']['RELS_EXT_isMemberOfCollection_uri_s']['summary_options']['items_per_page'] = '25';
/* Filter criterion: Islandora Solr: RELS_EXT_hasModel_uri_ms */
$handler->display->display_options['filters']['RELS_EXT_hasModel_uri_ms']['id'] = 'RELS_EXT_hasModel_uri_ms';
$handler->display->display_options['filters']['RELS_EXT_hasModel_uri_ms']['table'] = 'islandora_solr';
$handler->display->display_options['filters']['RELS_EXT_hasModel_uri_ms']['field'] = 'RELS_EXT_hasModel_uri_ms';
$handler->display->display_options['filters']['RELS_EXT_hasModel_uri_ms']['value'] = 'info:fedora/islandora:bookCModel';

/* Display: Block */
$handler = $view->new_display('block', 'Block', 'block');

</code>
</WRAP>