handlebars.js - Get first item in a sorted collection -


assuming have like:

{{#each pageelements}}   {{#is pageelement "news"}}     {{#withsort pages "data.posted" dir="desc"}}       <a href="/{{relativelink}}">         {{formatdate data.posted "%d.%m.%y"}}: {{data.title}}       </a>     {{/withsort}}   {{/is}} {{/each}}

how show first item withsort spits out?

i'm think can use first collection helper (http://assemble.io/helpers/helpers-collections.html) haven't been able syntax right.

the helpers in handlebars-helpers built grunt-assemble don't handle of things you'd want specific case.

we're working on getting dev branch published , of these easier use handlebars subexpressions.

for now, want make own helper sorting, can use first:

make sort.js helper file:

var = require('get-value');  module.exports = function sort(array, field, options) {   var arr = clonearray(array);   if (typeof options === 'undefined') {     options = field;     field = null;     arr = arr.sort();   } else {     arr = arr.sort(sortby(field));   }    if (options.hash && options.hash.dir === 'desc') {     arr = arr.reverse();   }   return arr; };  function clonearray(arr) {   var len = arr.length, = 0;   var results = new array(len);   while(i++ < len) {     results[i] = arr[i++];   }   return results; }  function sortby(prop) {   return function(a, b) {     var aval = get(a, prop);     var bval = get(b, prop);     if (aval > bval) {       return 1;     } else {       if (aval < bval) {         return -1;       }     }     return 0;   } }

register helper assemble , use in template:

{{#each pageelements}}   {{#is pageelement "news"}}     {{#withfirst (sort pages "data.posted" dir="desc")}}       <a href="/{{relativelink}}">         {{formatdate data.posted "%d.%m.%y"}}: {{data.title}}       </a>     {{/withfirst}}   {{/is}} {{/each}}

this should need. hope helps.


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