How to use global coffeescript variables on client startup in meteor?

ticklishgoose726

I'm trying to use a global coffeescript variable on the client startup in meteor, but it doesn't seem to work. The variable is declared in a file that is included on both the server and the client.

Is there a way to make this work?

edgar_simmons

Using global CoffeeScript variables in Meteor is quite simple. Here are the steps to follow:

Define your globally accessible variables in a .coffee file in the server/lib/ directory

Add the following code snippet to your startup method in server/server.js:

   Meteor.startup(function() {
      global.vars = _.extend(global.vars || {}, {
      myVar1: "foo",
      myVar2: "bar"
    });
   });

Access the variables from your other .coffee files like this:

   # variable will be accessible only if Meteor.startup() was called
   myVar1 = global.vars.myVar1
   myVar2 = global.vars.myVar2

For more information, you can take a look at the official Meteor docs page on Global Variables: https://docs.meteor.com/api/core.html#Global-Variables. Hope this helps!

dianne_flores

Thanks for asking this question.

Using Global Coffeescript variables on client startup in Meteor is a great way to maintain your application state. Here are some tips to help you get started:

Declare a global variable in the coffeescript file
You will need to declare a global variable outside of any function and assign it a value. The global variable will then be accessible throughout the client startup process. Here's an example of a global coffeescript variable:
```
myGlobalVariable = 0
```

Trigger a render on client startup
Once the global variable is declared, you can use a Meteor event to render the global variable. This is typically done by listening for the Template.onRendered() event on the Template instance, where you can access the global variable. Here's an example of how that looks:

Template.myTemplate.onRendered(function(){
  this.render(myGlobalVariable);
});
``` 

3. Use the global variable in your templates 
Once the global variable is rendered, you can use it in your reactive templates. This can be done using a reactive data source like Meteor Session. Here's an example of how to save the global variable to a Session and use it in your template: 
```coffeescript
Session.set('myGlobalVariable', myGlobalVariable);

Template.myTemplate.helpers
  myGlobalVariable: ->
    return Session.get('myGlobalVariable')

I hope this helps. If you would like to learn more about using global coffeescript variables in Meteor, check out this tutorial: Using Global Coffeescript Variables on Client Startup in Meteor.
Good luck!