Request for help with javascript for the citation search feature

Question

I would like to switch over the citation helper from the current kludged together back-end based on MathSciNet data, to an officially supported back-end (very kindly!) provided by Zentralblatt.

We'll need to rewrite a small amount of javascript for this to happen. If someone (ideally who knows javascript, and ideally who knows how to hack the existing javascript served on a page, so the new code can be tested before deployment) would like to help, please let me know.

The problem is simple to describe:

We need to modify the code currently served via http://cdn.sstatic.net/js/third-party/citation-helper.js?v=2, so that instead of retrieving results from, https://ec2.mathoverflow.org/cite?q=, it retrieves results from https://zbmath.org/citationmatching/mathoverflow?q=, and appropriately parses the JSON.

It's mostly just a matter of working out how the JSON structure has changed, and emitting appropriate HTML based on that. The HTML should be basically the same as what we already produce, but we should also include the Zbl identifier, linked directly to the corresponding Zbl page. The title of the article itself should be a hyperlink to the first "link" result.

Answer 1

As an example, the first result here contains the JSON

{
  "results": [
    {
      "pagination": "266-278", 
      "links": [
        "http://dx.doi.org/10.1017/jsl.2013.12"
      ], 
      "title": "On $\\omega_1$-strongly compact cardinals", 
      "year": "2014", 
      "source": "J. Symb. Log. 79, No. 1, 266-278 (2014).", 
      "score": 3.316698, 
      "zbl_id": "1337.03076", 
      "authors": "Bagaria, Joan; Magidor, Menachem"
    },
    ...
}

which should render as something like

Bagaria, Joan; Magidor, Menachem, On $\omega_1$-strongly compact cardinals, J. Symb. Log. 79, No. 1, 266-278 (2014). Zbl 1337.03076

Answer 2

function getCitationHtml(json) {
    var cite = $('<cite>').attr('authors', json.authors)
              .append('_' + json.authors + '_, ')
              .append('[**' + json.title + '**](' + encodeURI(json.links.length > 0 ? json.links[0] : '') + '), ')
              .append(json.source + ' [Zbl' + json.zbl_id + '](https://zbmath.org/?q=an:' + json.zbl_id + ')')
              .append('.');

    var citeContainer = $('<span></span>').append(cite).html();

    return citeContainer;
    }

Answer 3

We will also need to modify the fetchCallback function from http://cdn.sstatic.net/js/third-party/citation-helper.js?v=2.

This is the current content of that function, which we can "edit in place" to update.

// Callback to run when search completes.
function fetchCallback(response) {
  // Here's an example of what the 'response' argument might contain.
  // response = {
  //  "results": [
  //    {
  //      "pagination": "2586-2620", 
  //      "links": [
  //        "http://dx.doi.org/10.1016/j.jfa.2014.12.018", 
  //        "http://www.arxiv.org/abs/1406.4766"
  //      ], 
  //      "title": "Free transport for finite depth subfactor planar algebras", 
  //      "year": "2015", 
  //      "source": "", 
  //      "score": 2.15747, 
  //      "zbl_id": "06435710", 
  //      "authors": "Nelson, Brent"
  //    }, 
  //    {
  //      "pagination": "183-214", 
  //      "links": [
  //        "http://dx.doi.org/10.1023/A:1021296230310"
  //      ], 
  //      "title": "Exchange relation planar algebras", 
  //      "year": "2002", 
  //      "source": "Geom. Dedicata 95, 183-214 (2002).", 
  //      "score": 2.15747,   
  //      "zbl_id": "1022.46039", 
  //      "authors": "Landau, Zeph A."
  //    }
  //  ]
  // }        
        var html = $('<div class="list">');
        for (var i = 0; i < response.results.length; i++) {
            var result = response.results[i];
            var zbl = 'https://zbmath.org/?q=an:' + result.zbl_id;

            var link = result.links.length > 0 ? result.links[0] : '';
            var arxiv = '';
            for (var j = 0; j < result.links.length; j++) {
                     arxiv = result.links[j].includes("arxiv") ? result.links[j] : arxiv;
                }
            var authors = sanitizeForDisplay(result.authors);
            var title = sanitizeForDisplay(result.title);
            var citationHtml = sanitizeForDisplay(result.source);

            var result = $('<div class="item" style="float:none;padding:5px">')
                .html($('<div class = "summary post-link" style="float:none;width:auto;font-weight:bold;">')
                    .text(title))
                .append('<br/>')
                .append($('<span class="body-summary" style="float:none"></span>')
                    .append(authors + '<br/>' + citationHtml + '<br/> Preview (opens in new tab): ')
                    .append(renderOptionalLink(link, 'article'))
                    .append(renderOptionalLink(zbl, 'zbmath'))
                    .append(renderOptionalLink(arxiv, 'arxiv'))
                )
                .click(loadResultCallback(link, result))
                .hover(function () { $(this).css('background-color', '#e6e6e6') }, function () { $(this).css('background-color', '#fff') });

            html.append(result);
            result.find('a').on('click', function(e) { e.stopPropagation(); });
        }
        $('#results').html('').append(html);
        MathJax.Hub.Queue(['Typeset', MathJax.Hub, 'results']);
        $('#popup-cite .search-spinner').removeSpinner();
}