Validation --- Overlapping Size

Overlap Validation

// Check that a species record does not have overlapping sizes with another
// record of the same species

  //get current species record info....this is the species info to compare with all the others 

    $.validator.addMethod("doesNotHaveOverlap", function(value, element, params){
     	var spp = {}
	    var $index = $(element).parent().parent().index();
	    var $thisSpecies = $(element).parent().find('.sppCommon').select2("val");
	    var $thisNumber = $(element).parent().find('[id$="number_individuals"]').val();
	    var $thisMean = $(element).parent().find('[id$="average_length"]').val();
	    var $thisMin = $(element).parent().find('[id$="min_length"]').val();
	    var $thisMax = $(element).parent().find('[id$="max_length"]').val();
	
    	var $thisRange

    	if ( $thisNumber == 1 ){
    				$thisRange = [parseFloat($thisMean)];	
    			} else if ( $thisNumber == 2 ) {
    				$thisRange = [parseFloat($thisMin), parseFloat($thisMax)];		
    			} else {
    				$thisRange = _.range(parseFloat($thisMin), parseFloat($thisMax) + 1);	
    			}

  //get all other species entered thus far (are visible, same species code and not the record we are comparing with) and
  //put in a multidimensional array 
     
      	$("#animals .fields").each(function(i){
		      if ($(this).is(":visible") && $(this).find(".sppCommon").select2("val") == $thisSpecies && i != $index ) { 

			      var $animal = $(this).find('.sppCommon').select2("val"); 
		      	var $number = $(this).find('[id$="number_individuals"]').val();
		      	var $mean = $(this).find('[id$="average_length"]').val();
		      	var $min = $(this).find('[id$="min_length"]').val();
		      	var $max = $(this).find('[id$="max_length"]').val();
	 
		      	var $range
		      	if ( $number == 1 ){
		      		$range = [parseFloat($mean)];	
		      	} else if ( $number == 2 ) {
		      		$range = [parseFloat($min), parseFloat($max)];		
		      	} else {
		      		$range = _.range(parseFloat($min), parseFloat($max) + 1);	
		      	}	

		      	spp[i] = { "species": $animal, "range": $range}; 
		      };
	      });

  //if {spp} is not empty then loop through each record and test for overlapping ranges... 
  //trigger error if species sizes overlap with another record of same species 
    
      var hasOverlap;
      if ( _.isEmpty(spp) ) { hasOverlap = false; }
      else {
        var checkBool = []
        for ( rec in spp ) { checkBool.push( _.intersection(spp[rec].range, $thisRange).length>0); };
        hasOverlap = _.contains( checkBool, true );
      }
      console.log(spp);
      console.log(checkBool);
      return hasOverlap == false;
    }, "record overlaps with other record"
    );