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javascriptdust.js

Error when defining a dust.js filter

I'm using the full, Linked In version 1.2.0 of dust.js and am trying to define a filter for use when rendering a JSON view with a dust template. When I include this line in the page script:

_.extend(dust.filters, {foo: function(value){ return 'foo'; }});

it results in this error in Chrome's debugger:

Uncaught ReferenceError: _ is not defined

If I add the filter definition to where the other filters are in the dust .js file, it works. What am I doing wrong?

Solution

  • It looks like the file that defines the new filter is being run before underscore ( _ ) is being run. Thus, underscore is undefined.