Filter Backgrid columns by number

Question

With a table like this

1|2|3
4|1|1
1|1|1

Now I want to filter by columns with numbers >=3, I would get:

1|2|3
4|1|1

The ClientFilter library seems to only be made for strings (regex implementation). Is there an alternate way of doing this?

Answer 1

Backgrid classes are easily extensible, so all you need to do is create your own filter class which overrides ClientSideFilter.makeMatcher function like so:

var GreaterThanClientFilter = Backgrid.Extension.ClientSideFilter.extend({  
  makeMatcher: function(query){
      var q = 1*query;
      return function (model) {
          if (isNaN(q)) return false;
          var keys = this.fields || model.keys();
          for (var i = 0, l = keys.length; i < l; i++) {
              value = model.get(keys[i]);
              if (!isNaN(value) &&  (1*value >= q))
                  return true;
            }
          return false;
      };
  }  
});

var filter = new GreaterThanClientFilter({
  collection: collection
});

Running example: JSFiddle