speakers.html

---
layout: basic
---
{% assign rootResource = site.rootResource | rdf_get %}

{% capture persons_query %}
SELECT distinct ?person
WHERE {
  ?resourceUri schema:subEvent ?subEvent .
  ?subEvent schema:subEvent ?session ;
            rdfs:label ?eventTitle ;
            dct:date ?date .
  ?session schema:location ?location ;
           schema:startTime ?session_start ;
           schema:endTime ?session_end ;
           dct:title ?session_name ;
           schema:subEvent ?talk .
  ?talk dct:title ?talk_title ;
        schema:performer ?person ;
        schema:startTime ?start ;
        schema:endTime ?end .

  OPTIONAL {
    Select distinct ?person ?affiliation where {
    {
        ?person a <http://schema.org/Person> ;
          schema:affiliation ?affiliation .
    } union
    {
        ?person a <http://schema.org/Person> ;
          schema:memberOf ?affiliation .
    }}
  }
}
order by ASC(?person)
{% endcapture %}

{% capture dates_query %}
SELECT distinct ?ds WHERE {
  ?rd a <https://dataweek.de/#RoomDay> ;
    dct:date ?ds .
}  order by ASC(?ds)
{% endcapture %}

{% capture affiliations_query %}
SELECT distinct ?al ?affiliation WHERE {
  {
    ?person a <http://schema.org/Person> ;
      <http://xmlns.com/foaf/0.1/name> ?name ;
      schema:affiliation ?affiliation .
    ?event a schema:Event ;
      schema:performer ?person .
    ?affiliation rdfs:label ?al .

    FILTER(langMatches(lang(?al), "{{ site.language }}"))
  }
  UNION
  {
  	?person a <http://schema.org/Person> ;
      <http://xmlns.com/foaf/0.1/name> ?name ;
      schema:memberOf ?affiliation .
    ?event a schema:Event ;
      schema:performer ?person .
    ?affiliation rdfs:label ?al .

    FILTER(langMatches(lang(?al), "{{ site.language }}"))
  }
}  order by ASC(lcase(?al))
{% endcapture %}

{% capture details1_query %}
SELECT distinct (GROUP_CONCAT(distinct ?date;SEPARATOR=" ") as ?dates)
WHERE {
  <{{ rootResource }}> schema:subEvent ?subEvent .
  ?subEvent schema:subEvent ?session ;
            dct:date ?date .
  ?session  schema:subEvent ?talk .
  ?talk dct:title ?talk_title ;
        schema:performer ?person .

  filter (?person = ?resourceUri)
}
order by ASC(?person)
{% endcapture %}

{% capture details2_query %}
SELECT distinct (GROUP_CONCAT(distinct ?affiliation;SEPARATOR=" ") as ?affiliations)
WHERE {
  <{{ rootResource }}> schema:subEvent ?subEvent .
  ?subEvent schema:subEvent ?session .
  ?session  schema:subEvent ?talk .
  ?talk dct:title ?talk_title ;
        schema:performer ?person .

  OPTIONAL {
      Select distinct ?person ?affiliation where {
      {
          ?person a schema:Person ;
            schema:affiliation ?affiliation .
      } union
      {
          ?person a schema:Person ;
            schema:memberOf ?affiliation .
      } }
  }

  filter (?person = ?resourceUri)
}
order by ASC(?person)
{% endcapture %}

<script type="text/javascript">
  function filterSpeakers() {
    var affiliation = document.getElementById("speaker_form-select_affiliation").value;
    var date = document.getElementById("speaker_form-select_date").value;
    var ul = document.getElementById("speaker_ul_list");

    if (!affiliation && !date) {
      for (let li of ul.children) {
        li.style.display = "";
      }
      return;
    }

    for (let li of ul.children) {
      var local_affiliations = li.attributes["data-affiliations"].value;
      var local_dates = li.attributes["data-dates"].value;

      var show = true;
      if (affiliation) {
        if (local_affiliations.indexOf(affiliation) === -1)
          show = false;
      }

      if (show && date) {
        if (local_dates.indexOf(date) === -1)
          show = false;
      }

      if (!show)
        li.style.display = "none";
      else
        li.style.display = "";
    }
  }
</script>

<div class="content-header">
  <h1>
    {% if site.language == 'en' %}
      Our speakers
    {% else %}
      Unsere Vortragende
    {% endif %}
  </h1>
  <p>
    {{ rootResource | rdf_property: "schema:abstract", site.language }}
  </p>
  <form class="filter" action="#">
    <div>
      <label for="form-select1" class="hideme">Affiliation</label>
      <select class="form-control" id="speaker_form-select_affiliation">
        <option value="">
          {% if site.language == 'en' %}
            Choose affiliation
          {% else %}
            Affiliation wählen
          {% endif %}
        </option>
        {% assign affiliations = rootResource | sparql_query: affiliations_query %}
        {% for a in affiliations %}
          <option value="{{ a.affiliation }}">
            {{ a.al }}
          </option>
        {% endfor %}
      </select>
      <label for="speaker_form-select_date" class="hideme">Tag</label>
      <select class="form-control" id="speaker_form-select_date">
        <option value="">
          {% if site.language == 'en' %}
            Choose day
          {% else %}
            Tag wählen
          {% endif %}
        </option>
        {% assign dates = rootResource | sparql_query: dates_query %}
        {% for day in dates %}
          <option value="{{ day.ds }}">
            {{ day.ds }}
          </option>
        {% endfor %}
      </select>
      <button onclick="filterSpeakers()">
        {% if site.language == 'en' %}
          Filter speakers
        {% else %}
          Vortragende filtern
        {% endif %}
      </button>
    </div>
  </form>
</div>
<div class="contact-list">
  <ul id="speaker_ul_list">
    {% assign persons = rootResource | sparql_query: persons_query %}
    {% for p in persons %}
      {% assign details1 = p.person | sparql_query: details1_query %}
      {% assign date = details1 | first %}
      {% assign details2 = p.person | sparql_query: details2_query %}
      {% assign affiliations = details2 | first %}

      <li data-dates="{{ date.dates }}" data-affiliations="{{ affiliations.affiliations }}">
        {% include components/person.html organizer=p.person  %}
      </li>
    {% endfor %}
  </ul>
</div>