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All right, I think we're solid on filter functionality.

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So now let's spice things up and implement the dynamic approach, since it's highly unlikely that we'll

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send our responses based on hard coded filter values.

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And first, let's start with our requests, more specifically query prompts, because that's how we

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will get our data.

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And in order to jog your memory on query string primes.

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Let's go back to my favorite API place for this course.

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I've called the APIs Hacker News by Ogola API.

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And once we navigate here, once we start scrolling and everything and looks like I'll have to refresh,

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you can see that of course we can get the items, we can provide the root problems.

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That's clear.

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But if we keep on scrolling notice, of course, now we can start searching for some data.

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And how do they set up the search?

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Well, I have the domain.

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Then, of course, they have some kind of end point that ends with search.

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And then I have a question mark.

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And after the question mark, we have crawler repairs, which essentially are query string parameters.

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And then, of course, based on what you're looking for, whether you want to set the query or you want

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to look for different page, then you pass in the value and hopefully you get the correct result.

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And as far as our setup, we first need to understand how we can send those query string parameters

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from the postman.

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Correct.

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So let me open up the postman and then, of course, I'm going to be looking for get all products,

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so I'll just leave the testing one as it is.

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So essentially in there we'll just hardcourt all the time but back and get our products.

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Not only I'm going to be looking for the product, but I can go with Questionmark and then of course

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I can add key value.

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Now we have two options.

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Either you can type it here, for example, or you could say name is equal to John and notice how right

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away they're being added in this table as well.

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So that's the second option where if you don't want to do it in the URL, you can just set it up over

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here.

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And what's really cool, you can actually check and uncheck them.

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And what that means is that if I go here with John and then of course I send again the name and if I

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don't want to send, then I can just remove it.

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And if I want to take a look at the featured ones and of course, this is going to be featured.

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And as far as featured, I want to start with Drew, and then once we send course now, we'll just get

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back the message.

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But if we take a look at our controller, we should have access to those key value pairs in that query.

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So let's start out.

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I'm going to go with simple console log just so we can see that we are getting data and it is sitting

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in Iraq and query and let's do it one more time from the postman.

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So let's send it again.

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We get back the hard hardcoded result.

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But take a look at our console.

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Of course, I didn't see that I have the object.

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And then and then I have developers with whatever I'm setting up in the postman.

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And once we have jog their memory on queries from parameters.

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Now, I simply want to go back to the postman and I'll just use the featured and I'll show you in a

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second why I want to do that.

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And then I'll send it, of course.

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And if I take a look at my app, of course, now I only have feature.

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So now let's set up the logic where our remove control log and then we'll still be looking for the product

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and we'll use the fine, of course.

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But in this case, instead of hard coding, instead of setting up the object and then passing in whatever

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key and then the value, of course, will pass in directly.

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Gregory, now we will refactor the code because there are some gotchas we need to be aware of, but

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with the most basic setup will pass the query directly into the find.

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And let's hope that we'll get some results.

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So let's start the same way we'll go with const products and that is equal to a weight and then product.

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Then fine, then, like I said, well, directly passing wreck and clearing, and of course, once I

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get back the results, I want to also send them on line.

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In this case, I'm going to remove the message and I'll just say the same thing where all passing the

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product as well as the length of my ring.

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So that way I know how much I'm sending so I can go back.

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And then one more time from the postman and again the route is forward slash product, not testing one.

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And now we're just passing featured because that is one of the keys that I have and as far as the value

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I go through, and then once we send check it out now, of course, we have the product and the amount

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of items is equal to seven.

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So if I change this to false now, of course, I'll get a different set of values.

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Again, let's just quickly cover the logic where we have access to query string parameters in Iraq that

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query.

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And since we get back the object, we can directly pass it into the final one.

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And since in this case I'm looking for featured and I'm setting it equal to true.

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That, of course, returns only the products that are featured.

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And then if we pass in the false and of course we'll get only the product where feature is set to false.