Using custom helpers

[Eric Ponce]

Hello!

I need to use an external function, for example:

function getColor(id){

    geddy.model.Color.first({id: id}, function(err, color){

         return color.name;

    });

}

And from some view I need to call the function, like this: (in EJS ) <%= getColor(1); %>

How can I do this?

thanks!

[Tyler McGill]

Hi Eric,

Here's what I am doing.  In app/controllers/application.js I have the following:

var Application = function () {

  

  // define

  this.h = {

    array: require('../helpers/array'),

    encrypt : require('../helpers/encrypt'),

    is: require('../helpers/is'),

    random: require('../helpers/random'),

    require: require('../helpers/require'),

    save: require('../helpers/save'),

    sort: require('../helpers/sort'),

    to: require('../helpers/to'),

    view: require('../helpers/view'),

    welcome: require('../helpers/welcome')

  }

and then in each controller I have this at the top:

var Notifications = function () {

  // responds with

  this.respondsWith = ['html', 'json', 'xml', 'js', 'txt'];

  // shortcuts

  var h = this.h;

That way I can access any function I need to in any controller by using h.helpername.fn

T

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Tyler McGill

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[Eric Ponce]

Oh thanks!

This method is cool but....how can access to the helper file, from the view?

I have this now:

controllers/aplication:

this.h = {

        colours: require('../helpers/colours.js') //colour.js its a file, or folder? i've put colours.js

    }

In my colours controller:

// shortcuts

  var h = this.h;

In helpers/colours.js I have this:

funcion getColour(id){

    //code

    return "Hello";

}

And in the view:

<%= h.colours.getColour(1); %>

But the app crashes, what I am doing wrong?

Thanks friend!

[Tyler McGill]

just send it to your view in the respond function: self.respond({h: h, params: params});

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[Eric Ponce]

I've tried this but all the time i've recived the same error: Object #<Object> has no method 'getColour'

Have you any idea?

thanks for all!

[jkinsman]

You are missing a "t" when you are defining your function. You have funcion instead of function.

Try that and see if it fixes things.

[Eric Ponce]

Sorry!!! Its my mystake. In my app it's correctly writed but doen't work. thanks!

[Eric Ponce]

I've tried this:

In my application controller:

this.h = { a: require('../helpers/a.js') }

console.log( this.h.a );

And this responds { }

In "a.js" I have 2 functions, to try:

function some(){

    return "hello";

}

var hello = new(function(){ return "bye"; });

But I cant connect with any function :(

THANKS!!

[der_On]

Your file is missing the module.exports. See here for docs: http://nodejs.org/api/modules.html