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All right.

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And now I want to set up validation for job input.

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So what am I talking about?

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Well, let's take a look at our current controllers.

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We have one for get all jobs, create job, get single job, update job and delete job.

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And as you're looking at these controllers, which ones require req.body?

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So which ones are expecting some kind of value?

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Well, we have one for create job and we also have one for update job.

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Correct.

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So both of these are looking for req.body.

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And in there, of course, we'll have the Json value.

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So the cool thing is that we can set up, validate job input, essentially our validation and we can

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reuse it.

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We can use it for both requests.

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So let's try it out.

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And first we're going to navigate to, you know what, let's go to a server because I want to remove

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it.

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So we're not going to use validate test.

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Of course, that was just for demonstration purposes.

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And we also don't need this request.

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Just want to keep it nice and clean.

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And then when it comes to validation.

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I'm not going to leave it for your reference because you do have readmy.

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Same deal.

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I'm just going to remove it and effectively we right away want to export since we'll use it in our router.

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Let's come up with a name.

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I'm going to go with validate job input.

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Then remember, we have our function with validation errors and it's looking for the array.

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And this is what I'm talking about.

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Basically, once you have the setup in place, once you understand how express validate their works,

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essentially you'll just need to invoke this function and pass in which values you want to validate.

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And as far as the reference, well, we will use our schema.

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So in a schema we can clearly see what we're expecting.

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We'll go one by one and we'll decide, okay, what do we want from this property?

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Because of course, in order to create our instance, well, these are the values that we're looking

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for.

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Correct?

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So long story short, let's look for body, since that's where the values are going to be located.

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And what's the first property name?

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Well, company and effectively, I just want to have some kind of value.

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So I'm going to go with not empty.

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And then if there is an error, what is going to be my message?

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I'm just going to say company is required.

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Okay, good.

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Now we can copy and paste since it's going to be the same deal for position and job location.

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Again, if we take a look at the job model, notice position is simply a string and same goes for the

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job location.

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So these two are going to be a little bit different.

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But when it comes to job, location and position, I'm just checking for empty values.

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Now, can you add more validation here?

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Of course.

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So I'm just showing you the most basic one, but if you want to check for some different things, just

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visit the docs for Express Validator and you'll see all the options they provide.

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And of course, also please keep in mind that this is just our first validation apart from the test

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one.

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So as we're building the project, we'll cover some other options as well.

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So in here I just want to change it.

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So instead of company, this is going to be position and then the last one will be job location.

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Now please make sure that the name in here is the same.

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So yes, we want to go here in camel case since that's how we're going to be sending from the front

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end as well as the thunder client.

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Now, in here, of course we can change it.

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We can say job location is required and then we have job status and job type.

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And if we want to check for enums, we want to use is in.

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Now of course we can hardcode those values.

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We can hardcode the array.

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But remember.

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We set up the constants in the previous video.

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Correct.

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So let's utilize that.

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Let's go here with the body.

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Then what is the property?

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I'm checking.

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It's going to be a status.

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And then, like I said, we want to chain is in and instead of hard coding the array, well, let's

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try to get the job status one over here.

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Let me import.

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And now, of course, I want to go with object dot values.

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So remember, that's the built in method we have in the JavaScript, which is going to get only the

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values.

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So again, the result is going to be exactly the same.

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We'll get the array, but instead of hard coding, well, we're getting it from the constants, which

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means that these two will match always.

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So that way we don't need to worry about making some kind of typo.

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And then as far as the width message, let me think.

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Um, I think I'm going to go with invalid status.

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Value.

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Let's save it.

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And then, of course, we want to do the same thing for the job type.

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So let me scroll up.

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I don't think the auto import is going to work if I'm going to copy and paste.

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Then we want to change it.

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Then we want to copy in here.

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Let's go with job type.

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Job type.

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And then we're looking for different object and we'll say invalid type value.

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Now, once we have the validate job input in place, let's navigate to our router.

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So we're looking for routes our job router.

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And remember, when it comes to middleware, essentially we can stick it in front of the controller.

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Correct.

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And again, which two requests are going to look for the values in the Req.body?

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Well, the post one and the patch one.

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So create job and update job.

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And what's really awesome, once I have validate job input in place, of course I can reuse it.

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So this is what I'm talking about.

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Once you have the entire setup in place, it's not as bad as it looks.

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It's just that initial time when you need to build everything after that.

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You can set up the validation for multiple requests and it's actually much faster than you think.

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And trust me.

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It just saves you a bunch of mental energy because your controllers are way slimmer.

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So now let's navigate to a job router.

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In here, let's first look for the post one.

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And we're looking for validate job input.

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Yep.

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And we want to add the comma.

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And also we want to do the same thing, of course, for the patch one.

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And now we just need to go to our thunder client and test it out.

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Now in the Readme, you will find something very useful and this is effectively a Json code you want

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to use in two of those requests.

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So of course you can set it up from the scratch, but this is just going to be a nice starting point.

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And then of course, in order to test whether the validation works correctly, you can just change them

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again just so you can save a little bit of time.

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So first, let me navigate, I guess, to the Thunder client.

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Let me look for my great job.

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Let me send it here empty and in here.

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It's basically going to complain that, yep, job model.

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All right.

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Let me go back right now.

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So guess I'm looking for constants or in the job model.

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Yep.

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This is the thing.

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I mean, I just keep forgetting about those JS extensions.

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Let me try one more time.

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Great job.

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Let me send a notice.

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Companies required position is required and down the list.

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So at the moment, since I'm sending pretty much empty object, well I'll have a bunch of errors.

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Correct.

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So now let me copy and paste.

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So company is going to be coding addict, blah blah blah blah blah.

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Now let me send it and check it out.

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We successfully created a job and now it's going to be very easy to see whether our validator works.

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So, for example, I'm going to go with a remote.

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Remember, this is not a valid job type, so let's see whether everything is correct.

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And yep, I get back 400 and the value of course is invalid.

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Then let's also try to send without the company value.

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Let me save it over here.

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Yep.

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Company is required.

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So as you can see, our validator nicely works.

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Now let's go back to all jobs.

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Let me look for the last one.

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Since those are the values I'm going to reuse.

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Then we want to first navigate to edit job.

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I'm going to change the ID, so I want to make sure that I'm using the correct one.

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And again, remember, there is a validator, so if I'm going to send position DevOps, of course I'm

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going to get company is required.

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So now let's navigate back to create job.

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And let's just copy and paste and instead of the.

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Position now let me change it to front end.

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Let me send.

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Yep, everything's correct.

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And now position is correct.

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And of course you can test it out with more options.

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For example, you can send here without job location or you can change the job type value to something

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that's invalid.

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So this is totally up to you.

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I think in my case, I'm going to stop.

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Hopefully it's clear that our validate job input works as expected and now we can move on to the next

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step.