Integrated Metatags: Google scholar Dublin core tags

Note that DCMI recommend the use of a particular HTML profile - see http://dublincore.org/documents/2008/08/04/dc-html/ - which gives the following construct rather than that shown above:

<link rel="schema.dc" href="http://purl.org/dc/elements/1.1/" />
<meta name="dc.contributor" content="Last Name1, First Name1" />
<meta name="dc.contributor" content="Last Name2, First Name2" />
<meta name="dc.title" content="Article Title" />
<meta name="dc.date" content="01/01/2007" />

Also, the general convention within DCMI metadata usage is to use the W3C-DTF formatting for dates (see http://www.w3.org/TR/NOTE-datetime), which would give:

<meta name="dc.date" content="2007-01-01" />

I appreciate that this is slightly in conflict with the advice from Google, but thought it was worth noting here. I'll leave it as an exercise for the reader to decide whether to follow DCMI recommended practice or to follow that of Google :-)

It's worth noting that this would be down-right easy to take care of with an extra module. I may not have it fully documented, but Integrated Metatags has ways/hooks to let you tap into what's generated. I'd be willing to review any work people do and add it to core as an additional module should it pass scrutiny.

I just want to point out that nodewords have dublin core tags ready for use, as well as token support.

The thing about this module (metatags) is that it can create more tags if needed, that of course is a better solution in the long run.

As for the specific requirement of the original issue, isn't it just an issue of the poster configuring the right fields?

I'm a bit hazy on this, since it is quite a while since I tried out these two modules.

Best regards,
Paul

The tags from comment #1 are Highwire Press tags. Google Scholar advise against using DC tags unless you REALLY can't not.

Use Dublin Core tags (e.g., DC.title) as a last resort - they work poorly for journal papers because Dublin Core doesn't have unambiguous fields for journal title, volume, issue, and page numbers. To check that these tags are present, visit several abstracts and view their HTML source.

See Indexing Guidelines at http://scholar.google.com/intl/en/scholar/inclusion.html

I tried to use TokenStarter for defining tokens for Biblio module content type...

Here is my content of TokenBiblio module.

<?php


/**
 * @file
 * The Token API module.
 *
 * The Token module provides an API for providing tokens to other modules.
 * Tokens are small bits of text that can be placed into larger documents
 * via simple placeholders, like %site-name or [user].
 *
 * @ingroup token
 */

/**
 * Implementation of hook_token_list().
 */
//Implementation of hook_token_list().
function tokenBIBLIO_token_list($type = 'all') {
	$tokens = array();
	if ($type == 'node'  || $type == 'all') {
		// Node tokens here.
		$tokens['node']['biblio_abst_e'] 	= t("Bibliography: biblio_abst_e");
		$tokens['node']['biblio_accession_number'] 	= t("Bibliography: biblio_accession_number");    		
		$tokens['node']['biblio_auth_address'] 	= t("Bibliography: biblio_auth_address");
		$tokens['node']['biblio_authors'] 	= t("Bibliography: biblio_authors");    
		$tokens['node']['biblio_call_number'] 	= t("Bibliography: biblio_call_number");
		$tokens['node']['biblio_citekey'] 	= t("Bibliography: biblio_citekey");    		
		$tokens['node']['biblio_corp_authors'] 	= t("Bibliography: biblio_corp_authors");
		$tokens['node']['biblio_date'] 	= t("Bibliography: biblio_date");    
		$tokens['node']['biblio_doi'] 	= t("Bibliography: biblio_doi");
		$tokens['node']['biblio_edition'] 	= t("Bibliography: biblio_edition");    		
		$tokens['node']['biblio_isbn'] 	= t("Bibliography: biblio_isbn");
		$tokens['node']['biblio_issn'] 	= t("Bibliography: biblio_issn");    
		$tokens['node']['biblio_issue'] 	= t("Bibliography: biblio_issue");
		$tokens['node']['biblio_keywords'] 	= t("Bibliography: biblio_keywords");    		
		$tokens['node']['biblio_lang'] 	= t("Bibliography: biblio_lang");
		$tokens['node']['biblio_notes'] 	= t("Bibliography: biblio_notes");    
		$tokens['node']['biblio_number'] 	= t("Bibliography: biblio_number");
		$tokens['node']['biblio_number_of_volumes'] 	= t("Bibliography: biblio_number_of_volumes");    		
		$tokens['node']['biblio_pages'] 	= t("Bibliography: biblio_pages");
		$tokens['node']['biblio_publisher'] 	= t("Bibliography: biblio_publisher");
		$tokens['node']['biblio_research_notes'] 	= t("Bibliography: biblio_research_notes");
		$tokens['node']['biblio_secondary_authors'] 	= t("Bibliography: biblio_secondary_authors");
		$tokens['node']['biblio_secondary_title'] 	= t("Bibliography: biblio_secondary_title");
		$tokens['node']['biblio_short_title'] 	= t("Bibliography: biblio_short_title");
		$tokens['node']['biblio_subsidiary_authors'] 	= t("Bibliography: biblio_subsidiary_authors");
		$tokens['node']['biblio_tertiary_authors'] 	= t("Bibliography: biblio_tertiary_authors");
		$tokens['node']['biblio_tertiary_title'] 	= t("Bibliography: biblio_tertiary_title");
		$tokens['node']['biblio_type_of_work'] 	= t("Bibliography: biblio_type_of_work");
		$tokens['node']['biblio_url'] 	= t("Bibliography: biblio_url");
		$tokens['node']['biblio_volume'] 	= t("Bibliography: biblio_volume");
		$tokens['node']['biblio_year'] 	= t("Bibliography: biblio_year");   
		return $tokens;
	} 
}

/**
 * Implementation of hook_token_values().
 */
function tokenBIBLIO_token_values($type, $object = NULL, $options = array()) {
	$values = array();
	switch ($type) {
             case ($type == 'node'  || $type == 'all'):
		// Node tokens here.
		if ($object->type == 'biblio') {
		$values['biblio_abst_e'] = check_plain($object->biblio_abst_e);
		$values['biblio_accession_number'] = check_plain($object->biblio_accession_number);
		$values['biblio_auth_address'] = check_plain($object->biblio_auth_address);
		$tauth = check_plain($object->biblio_authors);
		$aauutthh = implode(",", $tauth);
		$values['biblio_authors'] = $aauutthh;
		$values['biblio_call_number'] = check_plain($object->biblio_call_number);
		$values['biblio_citekey'] = check_plain($object->biblio_citekey);
		$values['biblio_corp_authors'] = check_plain($object->biblio_corp_authors);
		$values['biblio_date'] = check_plain($object->biblio_date);
		$values['biblio_doi'] = check_plain($object->biblio_doi);
		$values['biblio_edition'] = check_plain($object->biblio_edition);
		$values['biblio_isbn'] = check_plain($object->biblio_isbn);
		$values['biblio_issn'] = check_plain($object->biblio_issn);
		$values['biblio_issue'] = check_plain($object->biblio_issue);
		$values['biblio_keywords'] = check_plain($object->biblio_keywords);
		$values['biblio_lang'] = check_plain($object->biblio_lang);
		$values['biblio_notes'] = check_plain($object->biblio_notes);
		$values['biblio_number'] = check_plain($object->biblio_number);
		$values['biblio_number_of_volumes'] = check_plain($object->biblio_number_of_volumes);
		$values['biblio_pages'] = check_plain($object->biblio_pages);
		$values['biblio_publisher'] = check_plain($object->biblio_publisher);
		$values['biblio_research_notes'] = check_plain($object->biblio_research_notes);
		$values['biblio_secondary_authors'] = check_plain($object->biblio_secondary_authors);
		$values['biblio_secondary_title'] = check_plain($object->biblio_secondary_title);
		$values['biblio_short_title'] = check_plain($object->biblio_short_title);
		$values['biblio_subsidiary_authors'] = check_plain($object->biblio_subsidiary_authors);
		$values['biblio_tertiary_authors'] = check_plain($object->biblio_tertiary_authors);
		$values['biblio_tertiary_title'] = check_plain($object->biblio_tertiary_title);
		$values['biblio_type_of_work'] = check_plain($object->biblio_type_of_work);
		$values['biblio_url'] = check_plain($object->biblio_url);
		$values['biblio_volume'] = check_plain($object->biblio_volume);
		$values['biblio_year'] = check_plain($object->biblio_year);
		return $values;
	}
	break;
  }
}

unfortunately it seems that Token Authors returns array in stead of string. so the meta tag contains simply Array.
Can someone help me unfolding this issue so I can have author list as coma seperated values.....

I tried implode() also but it also give error..

regards

It gives this result in meta tags where Array should be list of authors

<meta name="citation_author" content="Array" /> 
<meta name="dc.publisher" content="Array" /> 
<meta name="author" content="Array" /> 

It also shows warning on the page too...

warning: implode() [function.implode]: Invalid arguments passed in D:\xampp\htdocs\indexing\sites\all\modules\token\tokenBIBLIO.module on line 71.
warning: htmlspecialchars() expects parameter 1 to be string, array given in D:\xampp\htdocs\indexing\includes\bootstrap.inc on line 856.

Regards

My solution for that is only a little bit ugly. Mainly because Google Scholar requires each author to be listed in a *separate* meta tag, as opposed to all listed in one tag:

function hook__token_list($type = 'all') {
  $tokens = array();
  if ($type == 'node' || $type == 'all') {
    $tokens['node']['journal-article-author_N'] = t('The Nth author assigned to this node.');
  }
  return $tokens;
}

function hook_token_values($type, $object = NULL) {
  $values = array();
  switch ($type) {
    case 'node':
      if ($object->type == 'journal_article') {
        foreach ($object->field_article_author as $delta => $field) {
          $values['journal-article-author_' . $delta] = $field['value'];
        }
      }
  }
  return $values;
}

So I have a specific token for each and every author listed on the node. Your field name will differ, but the same solution can apply; be it for generating N tokens or for concatenating the field values into a single token.

hI cafuego

Excellent idea......But can you let me know how to incorporate/use this with Integrated Metatags?

Regards

You simply add custom token based tags and enter your [journal-article-author_0] [journal-article-author_1] etc tokens.

Hi....

I tried using your code....

but in output it gives..... [journal-article-author_0] [journal-article-author_1] as it is in HTML

My example is specific to my site and cck fields. If you want to do the same thing, you'll need to make sure you populate the correct tokens with the correct data.