durfdoen-2.0/layouts/partials/question.erb
2020-03-19 22:24:54 +01:00

75 lines
2.8 KiB
Text

<h2> <%= question[:vraag] %> </h2>
<select <% if question[:type] == "meerkeuze" %> multiple="multiple" <% end %>
id="<%= (question[:tekst] || "") + (question[:vraag] || "") %>_option">
<option value="" selected="selected disabled hidden">Maak uw keuze</option>
<% for answer in question[:antwoorden]%>
<option value='<%= answer[:tekst] + (answer[:vraag] || "") %>'>
<%= answer[:tekst] %>
</option>
<% end %>
</select>
<% for answer in question[:antwoorden]%>
<% if answer[:vraag] %>
<div id='<%= answer[:tekst] + answer[:vraag] %>' style="display:none;">
<%= render '/partials/question.*', question: answer %>
</div>
<% end %>
<% end %>
<script>
{
// Reference back to the last selected option
// This way we can 'deselect' the question results
let last_answered = [];
// Create list of all subquestions
const sub_questions = {};
// Create list of all student organisations this answer entails
const question_results = {};
<% for answer in question[:antwoorden] %>
<% if answer[:vraag] %>
sub_questions['<%= answer[:tekst] + answer[:vraag] %>'] = document.getElementById('<%= answer[:tekst] + answer[:vraag] %>');
<% end %>
question_results['<%= answer[:tekst] + (answer[:vraag] || "") %>'] = [];
<% if answer[:verenigingen] %>
<% for vereniging in answer[:verenigingen] %>
question_results['<%= answer[:tekst] + (answer[:vraag] || "") %>'].push(
"<%= vereniging[:naam] %>"
);
<% end %>
<% end %>
<% end %>
document.getElementById("<%= (question[:tekst] || "") + (question[:vraag] || "") %>_option").addEventListener('change', (event) => {
for (let la of last_answered) {
if (sub_questions[la]) {
sub_questions[la].style.display = "none";
// sub is the select dom element, that listens for changes
// When a parent is changed, it should notify it's last_answered child that it is changed
const sub = document.getElementById(la+"_option");
if (sub) {
sub.value = null;
sub.dispatchEvent(new event.constructor(event.type, event));
}
}
}
const selected = getSelectValues(event.target);
// Update results
save_answers(selected.flatMap(e => question_results[e] || []));
del_answers(last_answered.flatMap(e => question_results[e] || []));
finish_answers();
// Make possible sub question visible
const quests = selected.flatMap(e => sub_questions[e] || []);
last_answered = selected;
for (let quest of quests) {
delete quest.style.removeProperty("display");
}
});
}
</script>