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POMeteor: Is there a reactive per-template scope?
 

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    <p>I'm rendering the same Handlebars template in multiple (arbitrarily many) locations on the same page. Inside each template, I want a button to toggle the visibility of a div. When I save this state with <code>Session.set</code>, clicking one button obviously toggles all the divs in all the template instantiations which is not desired.</p> <p>I could save the state in the data context of the template instance (which is bound to <code>this.data</code> in the <code>Template.myTemplate.rendered</code> and <code>Template.myTemplate.created</code> callbacks), but there are two problems with that.</p> <ol> <li><code>this.data</code> isn't a reactive data source, so will not propagate to the div</li> <li>I don't have access to the template instance in <code>Template.myTemplate.events</code> (as discussed on <a href="https://groups.google.com/forum/?fromgroups=#!topic/meteor-core/TA7_jDXs10Q" rel="noreferrer">meteor-core</a>)</li> </ol> <p>Finally, I could somehow save it to a collection. But how would I uniquely identify the state for each template rendered? There might also be a hacky way with jQuery, but that's not the way I want to develop Meteor apps that are supposed to work with reactive templates. Especially, when that template gets more complex.</p> <p>Am I missing something or is there really no equivalent to AngularJS's controllers that get passed a <code>$scope</code> for each template instantiation?</p> <p><strong>Update</strong>: I was thinking of something like this.</p> <p>template.html:</p> <pre><code>&lt;template name="jsonObject"&gt; &lt;input type="button" /&gt; &lt;div class="{{hidden}}"&gt;content&lt;/div&gt; &lt;/template&gt; </code></pre> <p>client.js:</p> <pre><code>Template.jsonObject.hidden = function(){ var ret = ""; if (this._hidden) { ret = "hidden"; } return ret; }; Template.jsonObject.events({ 'click input' : function(event, template){ template.data._hidden = true; } }); </code></pre>
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