CODEWITHSUNDEEP
c#javascriptjsonmootoolsobject-initializers
user677607
user677607

Reputation:

How to I pass the object itself (like how we can do in C#) in mootools?

I would like to know how to pass self to an other object in mootools, I am trying to build classes based on mootools class declaration, but i am noticing i cannot send the object itself using this when i use this it sends DOMWindow instead of World or the object itself, the following is my code,

var World = new Class({
        ....

        initialize: function(rows, ...) {
            // build grass // can only have one grass per location
            this.grassList = Enumerable.Range(0, rows).SelectMany(
                function(row) {
                    return Enumerable.Range(0, columns).Select(
                        function(column) {
                            return new Grass(this, new Location(row, column), quantityOfGrass, maxQuantityOfGrass, growRateOfGrass)
                        })
                }).ToArray();
        }
        ....
}

I'm facing problem at this location,

return new Grass(this, new Location(row, column), quantityOfGrass, maxQuantityOfGrass, growRateOfGrass)

since it didn't work i checked for,

return new Grass(World, new Location(row, column), quantityOfGrass, maxQuantityOfGrass, growRateOfGrass)

it didn't work either i am using linq.js and mootools could someone guide me?

Upvotes: 0

Views: 645

Answers (1)

Tomalak
Tomalak

Reputation: 338228

var World = new Class({
        ....

        initialize: function(rows, ...) {
            // save a reference to the correct "this"
            var self = this;
            // build grass // can only have one grass per location
            self.grassList = Enumerable.Range(0, rows).SelectMany(
                function(row) {
                    return Enumerable.Range(0, columns).Select(
                        function(column) {
                            return new Grass(self, new Location(row, column), quantityOfGrass, maxQuantityOfGrass, growRateOfGrass)
                        })
                }).ToArray();
        }
        ....
}

The object referenced by this changes dynamically.

A callback function like your function(column) will know nothing about what this referred to in functions called earlier. If you want to re-use the reference to a specific this, you must save that reference in a variable.

Upvotes: 2

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