![]() ![]() No matter how small or big the components that you design are, they will share a simple fact: they all depend on some shape of data.įor example, the Header component above needed a data object to represent a profile. ![]() This page can be built with a lot more components and it can also be built with just two components. Of course, this is just my choice of components. The TweetList component, which is a list of Tweet components.The Sidebar component, which includes the following list of components: UserInfo, FollowersYouKnow, User_Media,_ and MediaItem.The Header component, which includes the following list of components: ProfileImage, BackgroundImage, TweetCount, FollowingCount, FollowersCount, LikesCount, and ListsCount.Write data in the shape of the provided graphql fragment, into the cache. I can see at least 15 components on this page: Using Apollos writeFragment to update nested list : codehunter. It’s a simple page that displays public information about the user, some stats, and the list of their tweets.įor example, if you navigate to on Twitter, you will see something like: Let’s talk about the user’s profile page. I will take one example page from that app and analyze it in terms of components and their data requirements. Let’s assume we want to build an app like Twitter by using rich data components. The Polymer.js project is designed to first provide polyfills to support using Web Components in any browser and then enhance their features. Many browsers already support most of the features needed to define and use Web Components. The idea of rich components is actually coming natively to the browser with what is commonly labeled as Web Components. They are only concerned about the shape of that data. The components do not really care about what that data is. These components can then be reused for any data that matches the shape they have been designed to work with. Arguments serve the same purpose as your traditional query parameters or URL segments in a REST API. You can pass arguments to every field and every nested object in your query to further deepen your request and make multiple fetches. We can use many modern JavaScript libraries like React.js, Angular.js and Polymer.js to define UI components that represent data. GraphQL queries allow us to pass in arguments into query fields and nested query objects. We can do that with modern libraries and frameworks. The GraphQL type system supports interfaces, which are just an abstract type which include a certain set of fields that a type must include to implement the. The story of UI components gets interesting when we can make a component represent data. They all have properties and behavior but they are limited in the fact that they cannot represent dynamic data. The Twitter’s TweetForm component can be composed from a TextArea component with a TweetButton component, and a few other components to attach an image, add a location, and count the number of characters typed in the text area.Īll HTML elements can be considered simple components. They can be functional on their own or they can just be parts that have to be put together to make something functional.īigger components can also be composed from smaller ones. You can pick any part of an application and call that a component. In the domain of User Interfaces, a component can be an abstract input text box or Twitter’s full tweet form. The word component can mean different things to different people. With User Interfaces, one strategy to do this splitting is by using UI components. The big complicated system should be the result of putting these parts together and having them communicate with each other to form features. They should be testable on their own and they should be reusable. Ideally, those parts should be designed in a way that does not couple them with each other. To build anything complicated, the one and only truly helpful strategy is to split what needs to be built into smaller parts and then focus on one part at a time. It's the same data that I should only get once and pass down or access through context but I have to pass in all these stupid fragments or relay complains.What are GraphQL fragments? What are UI components? Why are they a match? This is starting to feel like reverse prop drilling with I have to declare a fragment at the lower end of my app and pass it up the chain. How can I request this piece of data at the top of my application and have it available to child components without having to include the all these fragments. Relay fails if I don't include all this child fragments but the data is the same for all these, it seems pretty dumb having to declare a view fragment on all my child components that require the signed in user. I have parent component that ends up with nested fragments looking like this: query MyAppQuery( ![]()
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