GitLab GraphQL, 13 Feb 2020

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From YouTube: Learning GraphQL - Resolvers

Description

Introduction into Resolvers and how to create a type without direct connection to database

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I'll tell you we're continuing our journey with graph QL and we had tried to create some new type and actually, let's, let's see how this can be done. If we don't have a particular mapping in the database, so I'm actually a back-end developer, insecure department and we are like really real working a lot with reports sharing reports, and this is basically it's not stored in like normalize the data in the database but stored on the jason report, and we are pressing it if we need to work on it.

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So basically don't have such information in the database and how we can actually create a type like how we can actually load this data to graph kale. So, let's start with creating our type.

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Okay, so we are going to leave app folder and go to e for now. Okay,.

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We need project type to mount it. This field, our field, we filled.

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Okay, so we actually have dependency scanning report, so usually create the view for the pandas can grab it and we need to create a type and we will create new file.

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And we seize it, our like actually the project type.

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It's also inherited from a soldier. Okay,.

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We need to get some of.

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We'll just add some Association or maybe we'll skip it for now just add some field.

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We just add, for example, packager.

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Just but just have to filled begin all right, and we can this depends see it will be off for them.

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Okay and we actually need to wrap it in two square brackets, so we just like tell them that it will be not just one depends, not one entity of this dependency type, but a collection of it.

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Okay, what we're going to do next.

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All right and we need silver.

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Okay, we need some great in your silver orange. Let's call it dependency.

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Frozen screen control just to be nice, people.

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If you're hearing some noises right now with just my pop my pocket trying to drink water and I'm sure if you hear it but I it's take, it took google. It will take a long time. So I want the brightest all this good, because I don't know when he'll stop, he likes what I would.

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So we are returning this one entity, its types, mister type, and still we have this breakage. So we are like talents that we actually return in the collection.

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Probably there will be no defenses, so maybe to be okay and we have to implement this resolve, they would and lecture. We can pass arguments here, but we probably want all right so I just copy some.

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Piece of logic, which is not related to do the graphical, so it's actually, we are trying to get this report and.

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Get our report parse it, so we just like doing stuff get data, and this actually will get us our impressions, which will be actually represented into array of this dependency types and all right. I guess we are ready to go, but we need to mention this resolver. First.

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Dancers over and I will add everywhere, just magic fixer of all the problems. Okay, let's just try it.

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Okay: let's try it without dependencies.

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Okay, it's got Lords, but its object itself and on.

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What can go wrong? This is a question. Let's try to fix it in real time.

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There is no such constant.

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Aha, the problem is it's in wrong folder, so let me just quickly move it yeah right.

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So basically we have this folder. For all these concerns we just uploaded into our force kind of entity so basically depends adapt, was real structural.

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And it's not fixing the problem. Why not.

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Okay, so we are the kind of stock, it's not loading, so we'll just try to eliminate some problem. Let's see if we would just get just different error.

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Okay, so this the problem is sound, very the spilt. Let's see you soon all right.

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Well, this is very strange.

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Anyway, I guess it's even stranger. Photos hope she'll understand what is the problem, but they usually can't tell me because I'm kind of a pastor known for you who are doing it in real time.

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Just try again.

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Oh yeah, this is actually my favorite type of fixing stuff it just reload in page and now it's works, yeah happiness.

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So basically we just get this information and I can. Actually you know how about I can show you you just take another look to resolver, so this, basically getting this collection and its array of hash. You can see that is this execute method that we actually call its return. An array of hashes and each hash have this fields like name and version, and we actually can query for them. So basically, we created this new field for our report, which does doesn't have a like a direct normalized connection to the database.

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So this is actually very helpful and very useful for for us, so I hope. It's also helpful for you. So thank you for listening to this me, rambling and mumbling about the graphical so see you next time.