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POd3.js force layout namespace in a backbone view
 

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  1. POd3.js force layout namespace in a backbone view
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    <p>I'm working on a medium-complex app using backbone.js to handle wordpress data, and i can't figure out how to get the force working in a backbone layout.</p> <p>basically, i'm trying to instantiate a force layout within a backbone boilerplate layout, like this:</p> <pre><code>myLayout = Backbone.Layout.extend({ initialize: function() { var f = this; // i.e. the layout instance f.force = d3.layout.force() .nodes(myModels) .on("tick", f.tick) .gravity(0) .friction(0.9) .start(); console.log(f.force); }, tick: function() { // stuff to do when the force ticks } }); </code></pre> <p>The problem is that the force is being defined with all blank functions, like <code>gravity: function(x) { //lots of null things here }</code>. i'm pretty sure it's a namespacing issue, but nothing i try works - i've tried doing <code>$(window).force</code>, <code>var force</code>, <code>$this.force</code>...</p> <p>in my example <code>tick</code> is the only namespaced function, but i've tried doing that with all the others too (gravity, friction, etc.) to no avail (even though they should just be chaining onto the force object).</p> <p>anyone have any ideas? i can't really post a .jsfiddle because the app is too complicated, so sorry in advance about that. The current version is up <a href="http://learning.samgalison.com/wp_bb/" rel="nofollow">here</a></p> <p><strong>edit</strong>: here's how d3 can access the models successfully:</p> <p>this works:</p> <pre><code>myLayout.nodes = myLayout.d3_wrapper.selectAll(".node") .data(myModels) .enter().append("g").attr("class", "node") .attr("x",10) .attr("y",10); myLayout.nodes.append("clipPath") .attr("id", function(d) { return d.get("slug"); }) </code></pre> <p>as does this: <code>myLayout.nodes.append("clipPath") .attr("id", function(d) { return d.attributes.slug });</code></p> <p><strong>edit</strong>: in the interest of clarity, here's the non-nicknamed code:</p> <pre><code>setforce: function() { // this gets called from the layout's initialize fn console.log("setting force"); var f = this; // the layout f.force = d3.layout.force() .nodes(Cartofolio.elders.models) // Cartofolio is the module, elders is a Backbone Collection .gravity(0) .friction(0.9) .start(); console.log(f.force); } </code></pre>
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    1. COWhat does the `myModels` variable contain?
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    2. COit's a set of `Backbone.Models` from a `Backbone.Collection`, each of which has a bunch of `.attributes` - they get pulled fine by other d3 methods, it's just the `.force.layout` that seems to be finnicky
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    3. COWould you post an example of how another `d3` method accesses the attributes on the models?
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