Add context option for child views like in NestedView

[ghost]

Why you don't added context option binding for child views like in your NestedView plugin for Backbone ?

Example:
{{#each models}}
{{view "myChildView" context=this}}
{{/each}}

[spikebrehm]

Interesting. I suppose I never encountered that case. It also seems more brittle, and safer to explicitly pass in specific attributes.

What's your use case?

[ghost]

app/templates/places/list.hbs
{{#each places}}
{{view "places/place" context=this}}
{{/each}}

app/templates/places/place.hbs
{{context.name}}

It's better if we can do that:

app/templates/places/list.hbs
{{#each places}}
{{view "places/place" context=this}}
{{/each}}

app/templates/places/place.hbs
{{name}}

[spikebrehm]

Hmm. Well, typically you'd be working with models and collections, right? So you could do something like:

{{#each places}}
{{view "places/place" model=this}}
{{/each}}

[ghost]

app/templates/places/list.hbs
{{#each places}}
{{view "places/place" model=this}}
{{/each}}

app/templates/places/place.hbs
{{name}}

I have this exception:
Express
500 TypeError: Object # has no method 'toJSON'
at module.exports.Backbone.View.extend.getTemplateData (/Users/chris/workspace/croosty/croosty-app/node_modules/rendr/shared/base/view.js:97:25)

[ghost]

It's working when I do that, tell me if it's a good usage.

app/controllers/places_controller.js

var _ = require('underscore');

module.exports = {
  index: function(params, callback) {
    var spec = { 
      places: { collection: 'Places', params: { location: params['location'] }, expires: 3600 }
    };

    this.app.fetch(spec, function(err, results) {
      if (err) return callback(err);
      callback(err, results);
    });
  },

  show: function(params, callback) {
    var spec = {
      place: { model: 'Place', params: params }
    };

    this.app.fetch(spec, function(err, result) {
      if (err) return callback(err);
      callback(err, result);
    });
  }
};

app/views/places/index.js

View = require('../../base/view');

module.exports = View.extend({
  className: 'places-index',

  getTemplateData: function() {
    var data = View.prototype.getTemplateData.call(this);
    data.location = this.options.places.meta.location;
    data.places_count = this.options.places.meta.places_count;
    return data;
  }
});

module.exports.id = 'places/index';

app/templates/places/index.hbs

<aside id="sidebar">
  <header id="location-infos">
    <h2>{{places_count}} restaurants à {{location.name}}</h2>
  </header>

  {{view "places/list" collection=places}}
</aside>

app/views/places/list.js

View = require('../../base/view');

module.exports = View.extend({
  tagName: 'ul',
  id: 'places-list'
});

module.exports.id = 'places/list';

app/templates/places/list.hbs

{{#each _collection.models}}
  {{view "places/place" model=this}}
{{/each}}

app/views/places/place.js

View = require('../../base/view');

module.exports = View.extend({
  tagName: 'li',
  className: 'place'
});

module.exports.id = 'places/place';

app/template/places/place.hbs

{{name}}

[jeromegn]

I'm stumbling on the same issue.

I tried your code. For the first instantiation, it seems fine. However, if I reload the same page (in rendr), then all of my models seem to equal the last model in the array. Caching issue?

Also, curiously _models and _collection.models is not the same (first one will give me "toJSON error").

Are we doing something wrong?

[jeromegn]

Looks like adding a idAttribute to my model (because they don't have an id) makes this go away. Nice.

[spikebrehm]

Good catch re: idAttribute!

[vincentbello]

I found myself being able to nest views within loops like this:

{{#each models}}
   {{view="xview" model=this}}
{{/each}}

And then, in xview.js:

var BaseView = require('./base');
module.exports = BaseView.extend({
    getTemplateData: function () {
        return this.model;
    }
});
module.exports.id = 'xview';

Because in xview, this.model is just an array.
But in this case, the "xview" instances lose their model. All the views in App.router.currentView.childViews have model "undefined." Is there any workaround for this? It would be tremendously useful to be able to do this to nest views and still access these views' models.

[StevenLangbroek]

+1 on this. This allows for a nice and clear encapsulation of model's view logic within a template (click handlers etc), without having to override the getTemplateData, or breaking convention (a view's model property should always be exactly that: its model, not a JSON representation of a model).