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All right.
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So here comes the answer to the challenge.
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First things first because Lodash is available to us through NPM, then we're going to install it in
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the same way that we've installed Express EJS or Request to any of the previous libraries that we've
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worked with.
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Firstly we have to Control + C to quit our server and then we're going to run npm i or npm install and then
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we're going to spell out lodash and then we'll let that install in the background.
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Now the next thing we need to read in the documentation is how to use it using Node.js. And the way
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that they prefer you to use the library is to create a new variable using a underscore or what is also
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known as a low dash.
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That is how some people might refer to that symbol.
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Now in modern versions of Javascript we favor constant over var, so we're going to change that.
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And then we're going to require lodash so that we tap into all of its capabilities.
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Let's go into Atom and do that right at the top.
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So we're going to create a new const and it's going to be a underscore or a lodash. And then we'll
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get to set that to equal require the package that is lodash.
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And now we have access to all of the utilities in this library.
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Now as I mentioned, the particular one that we're interested in is the one that turns everything into
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a lower case and ignores all of the dashes or the underscores so that we get a clear text that we can
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work with and we can compare. In order to use this method they've shown you appear that you simply write
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underscore, which refers to the lodash utility library, .and then we specify the name of the method
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which is lowercase and then inside some parentheses we specify a string.
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Let's go ahead and do that over here.
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Now we want to convert our requested title from whatever format it is that the user put in here.
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They could have an uppercase, lowercase, kebab case, snake case, whatever it is they decided to use.
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We're going to convert it to the same format by using that lowercase method.
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So now we're going to say const requestedTitle is equal to underscore or lodash .lowercase and then
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we're going to open a set of parentheses and inside here is where we're going to put our string.
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Now if you only want to convert a single string then you can simply specify it like this.
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But if you have an array of strings then you can also put it into an array like so.
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Both methods will work.
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So now we have our requestedTitle converted to lowercase, but our storedTitle is still capitalized right?
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And so we have to apply the same method to the storedTitle.
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So let's do the same down here. _.lowercase open a set of parentheses and include the
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thing that we want to convert which is our post.title.
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So now if we hit save and we head back into our console and we restart our Node server and then we go
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ahead and create a brand new post, just go over to  compose let's just call it Another post and then I'm going
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to paste in some lorem ipsum, hit publish
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and now I have access to that.
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And then over here in the URL I'm going to tap into the route that is /posts/
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another-post and the URL is all in lowercase whereas our title is-- has a capitalized another and then
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it's got a space and then it's got post.
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But I'm going to use kebab case over here
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so I have a hyphen between another and post.
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And now when I hit enter and I check my console, I still get a match found because we've converted this
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title and this part of the parameter both into lowercase, we've thrown away all the hyphens or underscores
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and we just have a clear text that both now match. As long as those strings match and they're in the
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right order then we will get a match.
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And this is going to set us up for the next challenge.