Let's go make the action creators. These are the functions that the UI gives to the store to effect change: actions. These functions create actions.
Create a new folder called actionCreators and put in changeTheme.js
export default function changeTheme(theme) {
return { type: "CHANGE_THEME", payload: theme };
}
That's it! This one is the simplest form: create an object and return it. Some people will inline these action shapes in their React components. I prefer this because it makes refactors simple. Let's make the other two:
changeLocation.js
export default function changeLocation(location) {
return { type: "CHANGE_LOCATION", payload: location };
}
changeAnimal.js
export default function changeAnimal(location) {
return { type: "CHANGE_ANIMAL", payload: location };
}
changeLocation.js
export default function changeBreed(location) {
return { type: "CHANGE_BREED", payload: location };
}
That's it for action creators. In previous versions of this course, I taught how to do async actions so [check this out if you want to see that][v4-async]. there are a thousand flavors of how to do async with Redux. The most popular are redux-observable, redux-saga, redux-promise, and redux-thunk. I showed how to use redux-thunk because it's simplest: the others are more powerful but more complex.