Partials, Memoes, and Bindings

Usage.js

var
  myObject = {
    myfield: 'Not empty'
  },
  validations = {
    myfield: Namespace.Validators.getNotEmpty('myfield', 'My Field')(myObject)
  };

Utils.js

(function ( u ) {

u.memoize = function ( fn, context ) {
  if ( fn.__mcache__) { return fn; }
  var slice = Array.prototype.slice;
  fn.__mcache__ = {};
  return function ( _, __ ) {
    var __margs__ = slice.call( arguments ),
        __masig__ = JSON.stringify( __margs__ );
    if (! fn.__mcache__[__masig__] ) { fn.__mcache__[__masig__] = fn.call( context, __margs__ ); }
    return fn.__mcache__[__masig__];
  }
};

})( Namespace.Utils );

Validators.js

(function (v, u) {

v.getNotEmpty = u.memoize( function ( fieldName, displayName, errMsg ) {
  displayName = displayName || fieldName;
  errMsg = errMsg || displayName + ' cannot be blank';
  return function ( content ) {
    var v = content[fieldName];
    if ( 1 + [null, undefined, ''].indexOf(v) ) {
      return new Error( errMsg );
    }
  }
});

})( Namespace.Validators, Namespace.Utils );