I'm having an issue where I'm using peekAll() to load a large list of records in my route model(). I've got some view rendering streamlining to do as the page render is currently taking 2500ms, but it's highlighting that the foo.loading state doesn't seem to be triggered, as the page template hangs on the existing link when the new link is clicked for the 2500ms without loading displaying. How do I manually control the foo.loading state in the route.js file so that the loading template renders?
I've got the following code in my route.js file currently trying to use schedule to set isRendering on the controller:
model(params, transition) {
const passedInOrgCode = transition.params.customers.org_code;
const orgCode = passedInOrgCode !== undefined ? passedInOrgCode : this.get('currentUser.org.orgCode');
if (orgCode !== this.get('currentUser.impersonatedOrg.orgCode')) {
this.store.queryRecord('organisation', { org: orgCode }).then(org => {
this.get('currentUser').impersonateOrg(org);
}
const peekData = this.store.peekAll('customer');
let filterByOrg = (customers) => {
return customers.filter((item) => {
if (item.get('parentOrgCode') === orgCode || parseInt(orgCode) === ENV.APP.KORDIA_ORG_CODE) {
return true;
}
});
};
if (peekData.get('content').length === 0) {
return new Ember.RSVP.Promise((resolve, reject) => {
this.store.query('customer', { orgCode: orgCode }).then((customers) => {
resolve(filterByOrg(customers));
}).catch(() => { reject(); });
});
} else {
Ember.run(() => {
this.controllerFor('customers.index').set('isRendering', true);
return filterByOrg(peekData);
});
Ember.run.schedule('afterRender', () => {
this.controllerFor('customers.index').set('isRendering', false);
});
}
},
And in my handlebars file:
{{#if isRendering}}
{{loading-component }}
{{else}}
{{customer-list customers=model updated=updated search=search orgCode=orgCode}}
{{/if}}
All of the states are triggering to the console with the right timing, but I can't get the view to render the loading state.
[SOLVED]
I had to wrap my peekAll in a RSVP promise object with an Ember.run.later function. The answer was in the Asynchronous Routing docs - https://guides.emberjs.com/v2.12.0/routing/asynchronous-routing/#toc_the-router-pauses-for-promises. The relevant piece of code is below:
if (peekData.get('content').length === 0) {
return new Ember.RSVP.Promise((resolve, reject) => {
this.store.query('customer', { orgCode: orgCode }).then((customers) => {
resolve(filterByOrg(customers));
}).catch(() => { reject(); });
});
} else {
return new Ember.RSVP.Promise(function(resolve) {
Ember.run.later(function() {
resolve(filterByOrg(peekData));
});
});
}
Hope this helps someone :)
Related
I have never used Firebase before this is my first stab at it using Vue.
I have a setup Firebase using Realtime Databas and set up my project so I can post using the below code in my .vue file
this.$http.post('https://MY_PROJECT_NAME.firebaseio.com/posts.json', {
title: this.blog.title,
body: this.blog.content,
createdDate: this.$options.filters.fullMthDate(this.blog.publishDate),
author: this.blog.author,
active: true,
closedDate: null,
}).then((response) => {
this.$blogAdded = true;
this.loading = false;
this.$router.push('/');
}).catch((error) => {
console.log(error);
});
The thing I can't seem to find an answer to is how to then update this document when needed (e.g. user deletes an item, I want 'active' to become false)
I went for the above code as I was using net ninjas tutorials who set FireBase up this way.
I then do a get to list all items using below in my main component
this.$http.get('https://MY_PROJECT_NAME.firebaseio.com/posts.json').then(function(data) {
return data.json();
}).then(function(data) {
var blogsArray = [];
for (let key in data) {
const date = new Date(data[key].createdDate);
const todaysDate = new Date();
if (date <= todaysDate) {
data[key].id = key
blogsArray.push(data[key])
}
}
this.blogs = blogsArray;
this.loading = false;
});
And this displays them on my site
When the user clicks the tile they go to a page where they can 'Delete/Cancel' the post and it's here I am stuck. Below is the code I am using for displaying the selected item
data() {
return {
id: this.$route.params.id,
blog: {},
loading: false,
closeModal: false,
showModal: false
};
},
beforeMount() {
this.loading = true;
},
created() {
this.$http.get('https://MY_PROJECT_NAME.firebaseio.com/posts/' + this.id + '.json').then(function(data) {
return data.json();
}).then(function(data) {
this.blog = data;
this.loading = false;
});
},
methods: {
showCloseBlogModal() {
console.log(this.blog)
VueEvent.$emit('show-delete-blog-modal', this.blog);
}
}
Then when the modal is displayed I get the following in the console.log
I need to update the 'active' value to false when they click 'Yes' using the below
methods: {
deleteBlog() {
// CODE HERE WHEN CLICK 'YES' TO CANCEL
}
}
I have a custom component which receives a list of filters in order to display just the doctors that the user has selected:
<DoctorsSidebarFilter #update-view='showFilteredDoctors'></DoctorsSidebarFilter>
Next, in my main component, I'm using this to display the doctors:
<v-flex
v-for="doctor in allDoctors"
:key="doctor.first_name"
xs12
sm6
md4
>
And here's my data:
export default {
data: () => ({
allDoctors:[],
}),
methods: {
fetchDoctors(){
//Retrieve doctors
this.$store.dispatch(RETRIEVE_DOCTORS)
.then(
response => {
this.allDoctors = response;
}
)//TODO-me: Handle the error properly!
.catch(error => {
console.log(error);
});
},
showFilteredDoctors(filters){
let result = [];
this.fetchDoctors();
console.log('1:' + " " + JSON.stringify(this.allDoctors));
if (filters.length > 0) { // If Array is not empty then apply the filters
console.log('2');
this.allDoctors.forEach(function(e) {
if(filters.some(s => s.specialty === e.specialty || s.city === e.city)) {
result.push(e);
}
});
console.log('3:' + " " + JSON.stringify(result));
this.allDoctors = [...result];
console.log('4:' + " " + JSON.stringify(this.allDoctors));
}
}
},
mounted() {
this.fetchDoctors();
}
}
The problem is that eventhough my filtering works correctly and I can see from console.log('4:' + " " + JSON.stringify(this.allDoctors)); that this.allDoctors contains the new, filtered list; this is never displayed on screen.
Instead I see the default list of doctors that I've fetched from my API. Using vue devtools I can see that the this.allDoctors is momentarily updated with the correct values but then it goes back to the default ones.
As #user1521685 has already explained, the call to fetchDoctors is asynchronous so it'll complete after you've performed the filtering.
Typically you'd do something like this using a computed property instead and only make the server call once.
export default {
data: () => ({
allDoctors: [],
filters: []
}),
computed: {
filteredDoctors() {
const allDoctors = this.allDoctors;
const filters = this.filters;
if (filters.length === 0) {
return allDoctors;
}
return allDoctors.filter(doctor => {
return filters.some(filter => filter.specialty === doctor.specialty || filter.city === doctor.city);
});
}
},
methods: {
fetchDoctors(){
//Retrieve doctors
this.$store.dispatch(RETRIEVE_DOCTORS)
.then(
response => {
this.allDoctors = response;
}
)//TODO-me: Handle the error properly!
.catch(error => {
console.log(error);
});
},
showFilteredDoctors(filters){
this.filters = filters;
}
},
mounted() {
this.fetchDoctors();
}
}
In your template you'd then use:
v-for="doctor in filteredDoctors"
fetchDoctors is async, so in showFilteredDoctors you fetch the doctors, then set the filtered array and then the thenable in fetchDoctors kicks in and overrides the doctors again: this.allDoctors = response.
You'd have to return the Promise in fetchDoctors and use it in showFilteredDoctors like so:
this.fetchDoctors().then(() => /* do the filtering */)
EDIT: Return the Promise like this:
return this.$store.dispatch(RETRIEVE_DOCTORS).then().catch()
I'm new to VueJs and currently trying to load some data only once and make it globally available to all vue components. What would be the best way to achieve this?
I'm a little bit stuck because the global variables occasionally seem to become null and I can't figure out why.
In my main.js I make three global Vue instance variables:
let globalData = new Vue({
data: {
$serviceDiscoveryUrl: 'http://localhost:40000/api/v1',
$serviceCollection: null,
$clientConfiguration: null
}
});
Vue.mixin({
computed: {
$serviceDiscoveryUrl: {
get: function () { return globalData.$data.$serviceDiscoveryUrl },
set: function (newUrl) { globalData.$data.$serviceDiscoveryUrl = newUrl; }
},
$serviceCollection: {
get: function () { return globalData.$data.$serviceCollection },
set: function (newCollection) { globalData.$data.$serviceCollection = newCollection; }
},
$clientConfiguration: {
get: function () { return globalData.$data.$clientConfiguration },
set: function (newConfiguration) { globalData.$data.$clientConfiguration = newConfiguration; }
}
}
})
and in my App.vue component I load all the data:
<script>
export default {
name: 'app',
data: function () {
return {
isLoading: true,
isError: false
};
},
methods: {
loadAllData: function () {
this.$axios.get(this.$serviceDiscoveryUrl)
.then(
response => {
this.$serviceCollection = response.data;
let configurationService = this.$serviceCollection.services.find(obj => obj.key == "ProcessConfigurationService");
this.$axios.get(configurationService.address + "/api/v1/clientConfiguration").then(
response2 => {
this.$clientConfiguration = response2.data;
}
);
this.isLoading = false;
})
}
},
created: function m() {
this.loadAllData();
}
}
</script>
But when I try to access the $clientConfiguration it seems to be null from time to time and I can't figure out why. For example when I try to build the navigation sidebar:
beforeMount: function () {
let $ = JQuery;
let clients = [];
if (this.$clientConfiguration === null)
console.error("client config is <null>");
$.each(this.$clientConfiguration, function (key, clientValue) {
let processes = [];
$.each(clientValue.processConfigurations, function (k, processValue) {
processes.push(
{
name: processValue.name,
url: '/process/' + processValue.id,
icon: 'fal fa-project-diagram'
});
});
clients.push(
{
name: clientValue.name,
url: '/client/' + clientValue.id,
icon: 'fal fa-building',
children: processes
});
});
this.nav.find(obj => obj.name == 'Processes').children = clients;
The most likely cause is that the null is just the initial value. Loading the data is asynchronous so you'll need to wait for loading to finish before trying to create any components that rely on that data.
You have an isLoading flag, which I would guess is your attempt to wait for loading to complete before showing any components (maybe via a suitable v-if). However, it currently only waits for the first request and not the second. So this:
this.$axios.get(configurationService.address + "/api/v1/clientConfiguration").then(
response2 => {
this.$clientConfiguration = response2.data;
}
);
this.isLoading = false;
would need to be:
this.$axios.get(configurationService.address + "/api/v1/clientConfiguration").then(
response2 => {
this.$clientConfiguration = response2.data;
this.isLoading = false;
}
);
If it isn't that initial value that's the problem then you need to figure out what is setting it to null. That should be prety easy, just put a debugger statement in your setter:
$clientConfiguration: {
get: function () { return globalData.$data.$clientConfiguration },
set: function (newConfiguration) {
if (!newConfiguration) {
debugger;
}
globalData.$data.$clientConfiguration = newConfiguration;
}
}
Beyond the problem with the null, if you're using Vue 2.6+ I would suggest taking a look at Vue.observable, which is a simpler way of creating a reactive object than creating a new Vue instance.
Personally I would probably implement all of this by putting a reactive object on Vue.prototype rather than using a global mixin. That assumes that you even need the object to be reactive, if you don't then this is all somewhat more complicated than it needs to be.
I make a component, which show information from database in table. But this information with filters.
Filtering can be by event type and by participant (id: integer type).
When I click the button, I call handleShowClick(). In this function I check: if value of type event isn't null, I get from database events with this type. if value of type event is null, I get all events.
After this I check a participant value. If value isn't null, I call function, which search which events are include this participant. Data from this.state.event show in table in another component.
I haven't problems with event type. But I have problem with participant. When I choose one of participant, table shows correct data for a split second. After this return to prev state (without filter by participants).
How can I fix this issue? I set state to event only in this component
class TestPage extends Component {
constructor(props) {
super(props);
this.state = {
event: [],
searchByType: null,
searchByParticipant: null,
participantToEvent: []
};
this.handleShowClick = this.handleShowClick.bind(this);
this.onHandleEventByTypeFetch = this.onHandleEventByTypeFetch.bind(this);
this.handleParticipantSearch = this.handleParticipantSearch.bind(this);
this.onHandleEventFetch = this.onHandleEventFetch.bind(this);
}
handleShowClick() { // onClick
if (this.state.searchByType !== null) {
this.onHandleEventByTypeFetch(); // select * from ... where type=...
} else {
this.onHandleEventFetch(); // select * from ...
}
if (this.state.searchByParticipant !== null) {
this.handleParticipantSearch();
}
}
handleParticipantSearch() {
const list = [];
this.state.participantToEvent.map(itemP => { // participantToEvent is binding table
if (itemP.parid === this.state.searchByParticipant) {
this.state.event.map(itemEvent => {
if (itemEvent.id === itemP.eventid) {
list.push(itemEvent);
}
});
}
});
console.log(list); // here I see array with correct result
this.setState({ event: list });
}
onHandleEventFetch() {
fetch( ... , {
method: 'GET'
})
.then((response) => {
if (response.status >= 400) {
throw new Error('Bad response from server');
}
return response.json();
})
.then(data => {
if (data.length === 0) {
alert('nothing');
} else {
this.setState({
event: data
});
}
});
}
onHandleEventByTypeFetch() {
fetch( ... , {
method: 'GET'
})
.then((response) => {
if (response.status >= 400) {
throw new Error('Bad response from server');
}
return response.json();
})
.then(data => {
if (data.length === 0) {
alert('nothing');
} else {
this.setState({
event: data
});
}
});
...
}
}
Structure of this.state.event:
[{id: 1, name: 'New event', participant: 5, type: 10}, ...]
Structure of this.state.participantToEvent:
[{id: 1, idparticipant: 5, idevent: 1}, ...]
this.setState(...this.state,{ event: list });
I think this would solve your problem. Because you clear every item except for {event:list} by not copying the previous state.
Edit:
You should put
...this.state
to onHandleEventByeTypeFetch and onHandleEventFetch. Without them when you click handleShowClick one of those two functions always work and clears searchByParticipant data from the state by not copying the previous state.
The reason for you see the correct data for a short time is all about async nature of the state.
I get a list of items and use it to dynamically create an HTML list
_loadList(){
HttpUtils.get('http://myserver/list/users/')
.then((res) => {
const self = this;
res.forEach((item) => {
userListContainer.append('<li> item.name </li>')
});
});
}
I call this function in the constructor, everything is working fine
constructor() {
this._loadList();
}
I am trying to recall this function every 5 seconds to update the list with the new result:
constructor() {
const that = this;
this._loadList();
window.setInterval(function(){
that._loadList();
}, 5000);
}
The function is called, the received result contains the new content, but the HTML is not updated. Do you have an idea about the problem?
You can try below code that will work for in your case. You can checkout https://es6console.com/jgyxgm1f/ example which will alert random number (in your case it's equivalent of adding new data coming from API response).
_loadList = () => {
HttpUtils.get('http://myserver/list/users/')
.then((res) => {
userListContainer.empty();
res.forEach((item) => {
userListContainer.append('<li> item.name </li>')
});
});
}
constructor = () => {
this._loadList();
window.setInterval(() => {
this._loadList();
}, 5000);
}