Add findByTag and replace underscore with lodash

[jamlen]

Allows finding articles by tag. I had to replace underscore with lodash, but see this issue which has a long discussion about it and its performance, and the conclusion was to switch to lodash.

Url this uses is /tag/{{tag}}

[jamlen]

Next I'm looking at pagination... 😉

[martinrue]

Does lo-dash's where ever return null or undefined? Seems to always return an array, either with items if something is matched, or empty otherwise. Given that no tag argument would mean tag === undefined, could we simplify the entire function to:

var findByTag = function(tag) {
  _reinit();
  return _.where(blogs, { tags: [tag] });
};

[jamlen]

You're right! https://github.com/lodash/lodash/blob/2.4.1/dist/lodash.compat.js#L3483 looks like where is an alias for filter which always returns the array. Will update and commit...

[martinrue]

Awesome 👍

[martinrue]

Nice, this is a good idea :)

I've left one comment regarding findByTag implementation. Let me know what you think and let's get this merged.

Thanks!

[jamlen]

Done! merge away.... and I'll change that in my sitemark repo too!

[martinrue]

Thanks again James :)