request-registry-mobx

Request Registry Mobx

RequestRegistryMobx is a helper to use RequestRegistry ajax endpoints with mobx.

Features:

• lazy loading: ajax requests will be done only if the endpoint is actively observed
• auto refresh: if a cache gets outdated and the endpoint is still observed it will be executed again to update the state with the latest information
• garbage collection: once all observers stop observing the cache will be freed

Getting started

npm install --save request-registry registry-request-mobx

Api

createObservableEndpoint

The createObservableEndpoint can be used to load ajax data and handling the loading state in the same component:

const observedUserEndpoint = createObservableEndpoint(userEndpoint, {
    id: '1',
});
autorun(() => {
    if (observedUserEndpoint.hasData) {
        console.log(observedUserEndpoint.data);
    }
});

The useGetEndPoint can also be used inside a store:

class Store {
    userEndpoint = createObservableEndpoint(userEndpoint);

    setUserId(id: string) {
        this.userEndpoint.setKeys({ id: string });
    }

    get userName() {
        return this.userEndpoint.hasData ? this.userEndpoint.name : undefined;
    }
}

const store = new Store();
store.setUserId(1);

autorun(() => {
    console.log(store.userName);
});

endpointState

The return value of createObservableEndpoint can have the following states:

• state: 'LOADING': The endpoint is executed the first time or after an error occured.
• state: 'UPDATING': The endpoint is executed altough data have already been loaded before.
• state: 'DONE': The endpoint is done executing.
• state: 'ERROR': The endpoint is done executing but received an error

License

MIT license