Code below is my current solution,
tagsValue: Ember.computed('tags.#each', {
get() {
const out = [];
this.get('tags').forEach((tag) => {
out.push(tag.get('value'));
});
return out;
}
}),
Is there a better way to do so?
Try code below,
tagsValue: Ember.computed('tags.#each', {
get() {
return this.get('tags').mapBy('value');
}
}),
Related
I was struggling with a test issue for my custom useLazyQuery hook. My first test is passing but the second one is failing. What am doing wrong for the second test?
Here is the useLazyFetchCoin.tsx
export const useLazyFetchCoin = () => {
const [coins, setCoins] = useState<ICoin[]>([]);
useEffect(() => {
const coins = localStorage.getItem('coinsInfo');
if (coins) {
setCoins(JSON.parse(coins));
}
}, []);
const [getData, { loading, error }] = useLazyQuery(GET_COIN_PRICE_QUERY, {
fetchPolicy: 'network-only',
notifyOnNetworkStatusChange: true,
onCompleted: (data) => {
const hasSameCoin = coins.some((f) => f.id === data.markets[0]?.id);
if (data.markets.length && !hasSameCoin) {
const allCoins = [...coins, data.markets[0]];
setCoins(allCoins);
localStorage.setItem('coinsInfo', JSON.stringify(allCoins));
} else if (data.markets.length <= 0) {
alertNotification('Coin not found !', Notification.ERROR);
}
if (hasSameCoin) {
alertNotification('This coin already exists on your list !', Notification.WARNING);
}
}
});
return { coins, setCoins, getData, loading, error };
};
Here is the test file
describe('useLazyFetchCoin custom hook', () => {
const QueryMock = [
{
request: {
query: GET_COIN_PRICE_QUERY,
variables: { code: 'BNB' }
},
result: {
data: {
markets: [
{
id: 'binance_bnb_eur',
baseSymbol: 'BNB',
ticker: {
lastPrice: '414.90000000'
}
}
]
}
}
}
];
const QueryWrongCodeMock = [
{
request: {
query: GET_COIN_PRICE_QUERY,
variables: { code: 'asd' }
},
result: {
data: {
markets: []
}
}
}
];
function getHookWrapper(mocks: any, code: string) {
const wrapper = ({ children }: any) => (
<MockedProvider mocks={mocks} addTypename={false}>
{children}
</MockedProvider>
);
const { result, waitForNextUpdate } = renderHook(() => useLazyFetchCoin(), {
wrapper
});
expect(typeof result.current.coins).toBe('object');
expect(result.current.loading).toBeFalsy();
expect(result.current.error).toBeUndefined();
// call the lazy function
act(() => {
result.current.getData({
variables: { code }
});
});
return { result, waitForNextUpdate };
}
it('should return an array of coins', async () => {
// Working correctly
const { result, waitForNextUpdate } = getHookWrapper(QueryMock, 'BNB');
await waitForNextUpdate();
expect(result.current.loading).toBeFalsy();
expect(result.current.coins[0]).toEqual({
id: 'binance_bnb_eur',
baseSymbol: 'BNB',
ticker: {
lastPrice: '414.90000000'
}
});
});
it('should return an empty array when requesting a wrong code', async () => {
// Not working
const { result, waitForNextUpdate } = getHookWrapper(QueryWrongCodeMock, 'asd');
await waitForNextUpdate();
expect(result.current.loading).toBeFalsy();
expect(result.current.coins[0]).toEqual([]);
});
});
I got this error message for the second test.
Expected: []
Received: {"baseSymbol": "BNB", "id": "binance_bnb_eur", "ticker": {"lastPrice": "414.90000000"}}
I don't get it because I'm using different queries for each test.
Also, the second test should receive an empty array when you pass a wrong code such as 'asd'.
How can write a proper test for it?
I fixed the problem. When I was changing the order test, It worked correctly.
I added a clear mock function for it.
clear mock
I want to filter the List by searching in the search bar but it does not work.
for (var map in offersList) {
if (map.containsKey("foodname")) {
if (map["foodname"] == query) {
setState(() {
offersList.clear();
offersList.add(map);
});
}
}
}
Use a forEach
offersList.forEach((map){
if (map.containsKey("foodname")) {
if (map["foodname"] == query) {
setState(() {
offersList.clear();
offersList.add(map);
});
}
}
});
The Apollo GraphQL team says that readQuery and writeQuery are good for 95% of the use cases. I am using useMutation and update and want to remove an item from a cache without having to call refetchQueries. My code is as follows:
const [deleteSpeaker] = useMutation(DELETE_SPEAKER, {
update(cache, { data: {deleteSpeaker}}) {
const { speakers} = cache.readQuery({query: GET_SPEAKERS});
cache.writeQuery({
query: GET_SPEAKERS,
data: { speakers: speakers.filter(speaker => speaker.id !== deleteSpeaker.id) }
});
},
});
What gets returned from readQuery leads me to think I should be filtering for speakers.datalist but when I do that, the cache does not update.
What is the correct way to update cache to reflect a removed record from the GET_SPEAKERS query.
export const DELETE_SPEAKER = gql`
mutation DeleteSpeaker($speakerId: Int!) {
deleteSpeaker(speakerId: $speakerId) {
id
first
last
favorite
}
}
`;
and GET_SPEAKERS
export const GET_SPEAKERS = gql`
query {
speakers {
datalist {
id
first
last
favorite
company
}
}
}
`;
reading apollo docs, this should be something lke:
const [deleteSpeaker] = useMutation(DELETE_SPEAKER, {
update(cache, { data: {deleteSpeaker}}) {
cache.modify({
id: cache.identify(deleteSpeaker.id),
fields: {
comments(existingSpeakerRefs, { readField }) {
return existingSpeakerRefs.filter(
speaker => deleteSpeaker.id !== readField('id', speakerRef)
);
},
},
});
},
});
I want to return an array of objects. My code looks like this:
var apps = [];
this.get('groups').then(function(groups)
{
groups.forEach(function(group)
{
self.store.find('module', group.get('module').get('id')).then(function(module)
{
self.store.find('app', module.get('app').get('id')).then(function(app)
{
if(!apps.contains(app))
apps.pushObject(app);
});
});
});
});
I want to return all apps after foreach-loop is fulfilled, but I have no idea.
You must always return a promise to keep building the chain.
var self = this;
return this.get('groups')
// Return an app for each group
.then(function (groups) {
return Ember.RSVP.Promise.all(groups.map(function (group) {
return self.store.find('module', group.get('module.id'))
.then(function (module) {
return self.store.find('app', module.get('app.id'));
});
}));
})
// Filter out duplicates
.then(function (apps) {
return apps.uniq();
});
I'm trying to create a User.current() in my application, which pulls data from my server using $.getJSON('/users/current', function(data) { ... });. I am using the Singleton method that Discourse uses, which does the following:
Dashboard.Singleton = Ember.Mixin.create({
// See https://github.com/discourse/discourse/blob/master/app/assets/javascripts/discourse/mixins/singleton.js
current: function() {
if (!this._current) {
this._current = this.createCurrent();
}
return this._current;
},
createCurrent: function() {
return this.create({});
}
});
And in my User singleton model, I've rewritten createCurrent as follows:
Dashboard.User.reopenClass(Dashboard.Singleton, {
createCurrent: function() {
return Ember.Deferred.promise(function(p) {
return p.resolve($.getJSON('/users/current').then(function(data) {
return Dashboard.User.create(data);
}));
});
}
});
User is a normal Ember object model:
Dashboard.User = Ember.Object.extend({
});
This does request the data from the server, but the function is not setting User.current() correctly - when I inspect it, User.current() has none of the properties that should be set, such as name.
How can I return and set the current user using Ember's deferred and promises?
That's cause you're returning the promise in place of the user.
Why don't you create the user, then fill in the properties later.
Or use the Promise Proxy pattern that Ember Data uses (the promise can be used as the object once resolved)
DS.PromiseObject = Ember.ObjectProxy.extend(Ember.PromiseProxyMixin);
function promiseObject(promise) {
return DS.PromiseObject.create({ promise: promise });
}
Since $.getJSON('/users/current') returns a promise, might as well use that.
createCurrent: function() {
return $.getJSON('/users/current').then(function(data) {
return Dashboard.User.create(data);
});
}
Then you need to keep in mind that createCurrent returns a promise, not the object itself so you will need to:
current: function() {
if (!this._current) {
var that = this;
this.fetching = true;
this.createCurrent().then(function(val) {
that.fetching = false;
that._current = val;
});
}
return this._current;
},