Unlocking the Power of Marionette.CompositeView: Passing Parameters to Marionette.ItemView

Question

Unlocking the Power of Marionette.CompositeView: Passing Parameters to Marionette.ItemView

Is there a way to access the app.vent from Marionette.ItemView?

One solution might be to pass a parameter (app.vent) to Marionette.ItemView from Marionette.CompositeView.

Here's the code snippet:

// view/compositeView.js
define([
    'marionette',
    'views/item'
], function (Marionette, itemView) {
    var ListView = Marionette.CompositeView.extend({ 
        itemView: itemView
    });
});

Any thoughts on this?

P.S.:
I'm unable to access the app from itemView due to a circular dependency issue.

app -> view/compositeView -> view/itemView

javascript backbone.js marionette

Answer 1

Answer №1

In version 0.9, a new feature was added called itemOptions that allows you to specify options for each item view. This can be defined as either an object literal or a function that returns an object literal.



Backbone.Marionette.CompositeView.extend({
  itemView: MyItemViewType,

  itemViewOptions: {
    some: "option",
    goes: "here"
  }

});

Any key: "value" pairs defined in the itemViewOptions attribute will be passed to the item view's options during initialization.


Backbone.Marionette.ItemView.extend({
  initialize: function(options){
    options.some; //=> "option"
    options.goes; //=> "here"
  }
});

If you need to customize the creation of each item view instance, you can override the buildItemView method to provide your custom logic.


  buildItemView: function(item, ItemView){

    // custom logic here

    var view = new ItemView({
      model: item,
      // add your own options here

    });

    // additional custom code using the view instance

    return view;
  },

For more information, please refer to:

the v0.9 change log
the CollectionView documentation for itemViewOptions - note that CompositeView extends from CollectionView
the annotated source code for buildItemView

Answer 2

In version 0.9, a new feature was added called itemOptions that allows you to specify options for each item view. This can be defined as either an object literal or a function that returns an object literal.



Backbone.Marionette.CompositeView.extend({
  itemView: MyItemViewType,

  itemViewOptions: {
    some: "option",
    goes: "here"
  }

});

Any key: "value" pairs defined in the itemViewOptions attribute will be passed to the item view's options during initialization.


Backbone.Marionette.ItemView.extend({
  initialize: function(options){
    options.some; //=> "option"
    options.goes; //=> "here"
  }
});

If you need to customize the creation of each item view instance, you can override the buildItemView method to provide your custom logic.


  buildItemView: function(item, ItemView){

    // custom logic here

    var view = new ItemView({
      model: item,
      // add your own options here

    });

    // additional custom code using the view instance

    return view;
  },

For more information, please refer to:

the v0.9 change log
the CollectionView documentation for itemViewOptions - note that CompositeView extends from CollectionView
the annotated source code for buildItemView

Answer 3

Answer №2

Starting from Marionette v2.0.0, the childViewOptions attribute is now used instead of itemViewOptions to pass parameters to the child view:

var MyCompositeView = Marionette.CompositeView.extend({
  childView: MyChildView,
  childViewOptions: function(model, index) {
    return {
      vent: this.options.vent
    }
  }
});

var MyChildView = Marionette.ItemView.extend({
  initialize: function(options) {
      // var events = options.vent;
  }
});

new MyCompositeView({ vent: app.vent, collection: myCollection});

For handling events, it is recommended to use Marionette.Radio instead of directly passing app.vent to the view.

Answer 4

Starting from Marionette v2.0.0, the childViewOptions attribute is now used instead of itemViewOptions to pass parameters to the child view:

var MyCompositeView = Marionette.CompositeView.extend({
  childView: MyChildView,
  childViewOptions: function(model, index) {
    return {
      vent: this.options.vent
    }
  }
});

var MyChildView = Marionette.ItemView.extend({
  initialize: function(options) {
      // var events = options.vent;
  }
});

new MyCompositeView({ vent: app.vent, collection: myCollection});

For handling events, it is recommended to use Marionette.Radio instead of directly passing app.vent to the view.

Unlocking the Power of Marionette.CompositeView: Passing Parameters to Marionette.ItemView

Answer №1

Answer №2

Similar questions

Adjust the width of the element to match the size of the image within

Encountering 404 Errors while Attempting to Reach API Endpoint in an Express.js Application Hosted on cPanel

Adjusting image dimensions dynamically using JavaScript based on screen size

Can someone explain the process of unescaping characters in an API response to me?

Exploring the art of path zooming in d3.js

I encountered an issue while using the tab bar feature in Bootstrap where I wasn't able to navigate back to the first tab or any

Vue.js seems to be leading me down a long and steady path of progress at a snail

Unit testing tips: the art of mocking a wrapper function

A stylish method for converting CSV data into XML format using Node.js and Express

Struggling to get the ReactJS.NET MVC tutorial to function properly?

AngularJS: Transitioning from Expressions to Javascript (Coffeescript)

Decoding GeoJSON: Extracting a feature from an array

Trouble with highlighting the chosen menu item

Identifying all Images with JavaScript, Including Asynchronous Ones

In my Django html file, I am facing an issue with the IF statement that seems to be dysfunctional

Why must we always begin rotating with 0 in CSS Animation's webkit transform rotate?

Jquery Validate doesn't consistently give a positive response

Challenges with synchronizing the scope of global arrays when reading JSON files into objects

Explore the Wikipedia API play area by searching based on the user's input

ReactJS component experiencing issues with loading images