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Factory functions allow us to create things in a lazy configurable manner. It’s basically a standard feature but instead of things defined statically, everything (except components)Īre defined inside factory functions. My solution is a little bit different butĪt the end we’re trying to solve the same thing. Some people have already dealt with this problem. If you do, there is a solution.Įnter the realm of reusable features. On the type of the application you are building and the use cases. You may never experience this situation, it really depends The cause of this effect is the fact that they are both focused on the same place in the Redux state andĪct accordingly based on Redux state changes. The problem arises when you try to interact with them.Ĭhanging state in one, for example marking an item as done, or re-ordering the items, will cause the items in the second list to be updated. If you do that, it will work and the Todo Lists will display. Imagine a situation when you want to display two Todo Lists on the same page. It is statically mounted at a specific place in a state. The standard feature has unfortunately one disadvantage. Somebody that will come to work on a project after #Todolist react redux codeIt really pays of to structure your code using these rules. Try to think of it as applying The Single Responsibility Principle.Įach feature only does one thing, and it is isolated in its own directory.Īs you applications grows and you add more and more features, It is always good to break features into smaller sub-features with encapsulated logic to reduce the complexity. These sub-features should adhere to the same rules as its parent feature. If the number of components in the standard feature becomes too big, you should break the feature into separate sub-features. #Todolist react redux fullRegardless, the full representation of the standard feature should look like the one described below this paragraph. There are situations that you may need reducers but don’t need actions and so on. What the standard feature directory contains will depend on your use case. You can check the reference repository to see how this looks in a real project. This is where our feature handles its side effects, such as catching some Redux actions and dispatching new ones, Usually it contains support utilities and helpers. utils.jsĮverything related to your feature that doesn’t belong anywhere else. Multiple input-selectors and add some business logic or do some transformations. Input selectors that only retrieve data from the state and combined selectors that can combine I strongly recommend dividing the selectors into two categories. If you’re not familiar with the concept, I highly recommend lookingĪt the reselect library. Selectors are pure functions that compose and know how The file where you define your selectors. This is also a place where you compose the reducers of your possible sub-features using combineReducers. The file where your reducers are defined. If you don’t know what is the difference between the componentsĪnd containers you should read this articleįrom Dan Abramov why this separation exists and why it is necessary. The directory where your containers live. The directory where your components live. The standard feature directory has a prescribed structure that usually looks like this: I will demonstrate what a standard feature is in an example Todo List. You can imagine a standard feature as a directory that lives in your codebase. Later we’ll cover creating reusable feature instances whichĬan be mounted with different state at different locations. I will start by explaining how I approach #Todolist react redux freeIt was written by Developer1 or Developer2.įor the purpose of this article, I’ve implemented all the patterns that we will be talking about in this repository.įeel free to clone it and then run it using npm run start. Over and over so that every part of the codebase looks the same regardless whether What do I mean by standard and prescribed ? Applying the same patters/rules #Todolist react redux how toToday I’d like to talk about how to create features in React+Redux application in standardĪnd prescribed way. With redux-observable it has really become something special. ![]() The nightmare of state management became a delightful experience and after I started handling my side effects It introduced me to the concepts of Functional and Reactive programmingĪnd showed me how easy and maintainable the development of a large scale Single Page Applications can be. Since then it has changed the way I think. I’ve started writing applications in React and Redux more than two years ago. ![]() Back to Articles Creating reusable features in React + Redux ![]()
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