Currently, I am implementing a chat. After user pressed a chat button, the app will navigate the user to the Chat component. The chat content will simply store in firebase and chatId is needed to identify which chat belongs to the user.
Since I don't know how to pass props during navigation, I decided to save the CurrentChatId in AsyncStorage. After navigated to the Chat component, it will get the CurrentChatId from AsyncStorage so that I can map the chat content with the firebase.
However, I got the error _this3.navigateTo is not a function with code below:
let ref = FirebaseClient.database().ref('/Chat');
ref.orderByChild("chatId").equalTo(chatId).once("value", function(snapshot) {
chatId = taskId + "_" + user1Id + "_" + user2Id;
if (snapshot.val() == null) {
ref.push({
chatId: chatId,
taskId: taskId,
user1Id: user1Id,
user2Id: user2Id,
})
}
try {
AsyncStorage.setItem("CurrentChatId", chatId).then(res => {
this.navigateTo('chat');
});
} catch (error) {
console.log('AsyncStorage error: ' + error.message);
}
}
The function navigateTo is copied from the demo app of NativeBase
import { actions } from 'react-native-navigation-redux-helpers';
import { closeDrawer } from './drawer';
const {
replaceAt,
popRoute,
pushRoute,
} = actions;
export default function navigateTo(route, homeRoute) {
return (dispatch, getState) => {
const navigation = getState().cardNavigation;
const currentRouteKey = navigation.routes[navigation.routes.length - 1].key;
dispatch(closeDrawer());
if (currentRouteKey !== homeRoute && route !== homeRoute) {
dispatch(replaceAt(currentRouteKey, { key: route, index: 1 }, navigation.key));
} else if (currentRouteKey !== homeRoute && route === homeRoute) {
dispatch(popRoute(navigation.key));
} else if (currentRouteKey === homeRoute && route !== homeRoute) {
dispatch(pushRoute({ key: route, index: 1 }, navigation.key));
}
};
}
You should bind this to the function that contains the try & catch. The best practice is to add this bind the constructor of the the component:
constructor(props) {
super(props);
this.myFunctoin = this.myfuction.bind(this);
}
Finally, I solved the problem. It is really because this.navigateTo('chat'); is inside function(snapshot)
ref.orderByChild("chatId").equalTo(chatId).once("value", function(snapshot) {
chatId = taskId + "_" + user1Id + "_" + user2Id;
if (snapshot.val() == null) {
ref.push({
chatId: chatId,
taskId: taskId,
user1Id: user1Id,
user2Id: user2Id,
})
}
}
try {
AsyncStorage.setItem("CurrentChatId", chatId).then(res => {
this.navigateTo('chat');
});
} catch (error) {
console.log('AsyncStorage error: ' + error.message);
}
Take it out from the function will solve the problem.
Related
This code is inside a .vue file. Receiving the "Error: Table has no columns." Inside the methods function, it won't receive the values from firebase to display a chart/graph to web app. What am I doing incorrectly? I think the values am I trying to receive inside "chartData:[ ]" or "mounted()" is incorrect and may be causing the issue. Any help is much appreciated.
export default {
name: "App",
components: {
GChart
},
methods: {
getHumidity(){
get(
query(ref(db, auth.currentUser.uid + "/Environment/humidity"),
orderByChild("humidity")
)
).then((snapshot) => {
if (snapshot.exists()) {
console.log(snapshot.val());
for (const item in snapshot.val()) {
this.pgoods.push({
humidity: snapshot.val()[item].humidity,
expir: snapshot.val()[item].humidity,
});
}
} else {
this.pgoods = [];
}
return float(snapshot.val());
});
}
getPressure(){
get(
query(ref(db, auth.currentUser.uid + "/Environment/pressure"),
orderByChild("pressure")
)
).then((snapshot) => {
if (snapshot.exists()) {
console.log(snapshot.val());
for (const item in snapshot.val()) {
this.pgoods.push({
pressure: snapshot.val()[item].pressure,
expir: snapshot.val()[item].pressure,
});
}
} else {
this.pgoods = [];
}
return float(snapshot.val());
});
}
getTime(){
get(
query(ref(db, auth.currentUser.uid + "/Environment/time"),
orderByChild("time")
)
).then((snapshot) => {
if (snapshot.exists()) {
console.log(snapshot.val());
for (const item in snapshot.val()) {
this.pgoods.push({
time: snapshot.val()[item].time,
expir: snapshot.val()[item].time,
});
}
} else {
this.pgoods = [];
}
return float(snapshot.val());
});
},
},
data(){
return{
chartData: [
["Time", "Pressure", "Humidity"],
[this.getTime(), this.getPressure(), this.getHumidity()],
[this.getTime(), this.getPressure(), this.getHumidity()],
],
},
mounted(){
this.getTemperature();
this.getHumidity();
},
}
i'm trying to add persistent attributes to my lambda function.
i created a dynamoDB table and added it to the triggers of my lambda function.
i copied a sample code from github, but when i try to launch the skill i get an error. The console log shows:
{
"errorMessage": "Could not read item (amzn1.ask.account.AGIIYNRXWDLBD6XEPW72QS2BHGXNP7NWYBEWSH2XLSXZP64X3NCYEMVK233VFDWH77ZB6DAK6YJ53SZLNUFVQ56CYOVCILS7QFZI4CIRDWC3PAHS4QG27YUY5PTT6QEIK46YFNTJT54YAKNGOWV2UO66XZACFDQ5SEXKJYOBNFNIZNUXKNTIAAYZG4R5ZU4FMLPDZZN64KLINNA) from table (Spiele): The provided key element does not match the schema",
"errorType": "AskSdk.DynamoDbPersistenceAdapter Error",
"stackTrace": [
"Object.createAskSdkError (/var/task/node_modules/ask-sdk-dynamodb-persistence-adapter/lib/utils/AskSdkUtils.js:22:17)",
"DynamoDbPersistenceAdapter.<anonymous> (/var/task/node_modules/ask-sdk-dynamodb-persistence-adapter/lib/attributes/persistence/DynamoDbPersistenceAdapter.js:123:49)",
"step (/var/task/node_modules/ask-sdk-dynamodb-persistence-adapter/lib/attributes/persistence/DynamoDbPersistenceAdapter.js:44:23)",
"Object.throw (/var/task/node_modules/ask-sdk-dynamodb-persistence-adapter/lib/attributes/persistence/DynamoDbPersistenceAdapter.js:25:53)",
"rejected (/var/task/node_modules/ask-sdk-dynamodb-persistence-adapter/lib/attributes/persistence/DynamoDbPersistenceAdapter.js:17:65)",
"<anonymous>",
"process._tickDomainCallback (internal/process/next_tick.js:228:7)"
]
}
the table contains a primary key "name" and sort key "UserId". is that wrong?
here is my index.js:
const Alexa = require('ask-sdk');
// Define the skill features
let skill;
/**
* If this is the first start of the skill, grab the user's data from Dynamo and
* set the session attributes to the persistent data.
*/
const GetUserDataInterceptor = {
process(handlerInput) {
let attributes = handlerInput.attributesManager.getSessionAttributes();
if (handlerInput.requestEnvelope.request.type === 'LaunchRequest' && !attributes['isInitialized']) {
return new Promise((resolve, reject) => {
handlerInput.attributesManager.getPersistentAttributes()
.then((attributes) => {
attributes['isInitialized'] = true;
saveUser(handlerInput, attributes, 'session');
resolve();
})
.catch((error) => {
reject(error);
})
});
}
}
};
function saveUser(handlerInput, attributes, mode) {
if(mode === 'session'){
handlerInput.attributesManager.setSessionAttributes(attributes);
} else if(mode === 'persistent') {
console.info("Saving to Dynamo: ",attributes);
return new Promise((resolve, reject) => {
handlerInput.attributesManager.getPersistentAttributes()
.then((persistent) => {
delete attributes['isInitialized'];
handlerInput.attributesManager.setPersistentAttributes(attributes);
resolve(handlerInput.attributesManager.savePersistentAttributes());
})
.catch((error) => {
reject(error);
});
});
}
}
const LaunchHandler = {
canHandle(handlerInput) {
return handlerInput.requestEnvelope.request.type === 'LaunchRequest';
},
handle(handlerInput) {
console.info("LaunchRequest");
let attributes = handlerInput.attributesManager.getSessionAttributes();
console.info("Test the load: " + attributes['isInitialized']);
attributes['FOO'] = "BAR";
saveUser(handlerInput, attributes, 'persistent');
return handlerInput.responseBuilder
.speak('Hello')
.reprompt('Hello')
.getResponse();
}
}
exports.handler = Alexa.SkillBuilders.standard()
.addRequestHandlers(
LaunchHandler
)
.addRequestInterceptors(GetUserDataInterceptor)
.withTableName('Spiele')
.withAutoCreateTable(true)
.withDynamoDbClient()
.lambda();
can anyone tell me what i'm doing wrong?
please confirm the partition key is 'userId' not 'UserId' (notice the uppercase U).
Also I would suggest using 'this' object.
Let me know if that helps.
Cheers
Below code is for python lambda function
from ask_sdk_core.skill_builder import CustomSkillBuilder
from ask_sdk_dynamodb.adapter import DynamoDbAdapter
sb = SkillBuilder()
sb = CustomSkillBuilder(persistence_adapter = dynamodb_adapter)
Yesterday my app was launched, Ionic v1, and a few users entered the wrong password and can't log into the app.
The app uses firebase authentication. I have a __refs file that points to the database and have tried numerous things trying to get the reset to work.
I've tried referencing $firebaseAuth, of course my __refs, $firebase then use $firebase.auth()...
I didn't write the authentication of this app so I'm not real sure how it works. I'm hoping that someone can help me.
My reset controller
angular.module('formulaWizard').controller('ResetPasswordCtrl',
function($scope, $ionicLoading, $firebaseAuth, __Refs) {
$scope.user = {
email: ''
};
$scope.errorMessage = null;
var fbAuth = $firebaseAuth(__Refs.rootRef);
$scope.resetPassword = function() {
$scope.errorMessage = null;
$ionicLoading.show({
template: 'Please wait...'
});
fbAuth.sendPasswordResetEmail($scope.user.email)
.then(showConfirmation)
.catch(handleError);
};
function showConfirmation() {
$scope.emailSent = true;
$ionicLoading.hide();
}
function handleError(error) {
switch (error.code) {
case 'INVALID_EMAIL':
case 'INVALID_USER':
$scope.errorMessage = 'Invalid email';
break;
default:
$scope.errorMessage = 'Error: [' + error.code + ']';
}
$ionicLoading.hide();
}
});
My Refs file
angular.module('formulaWizard')
.factory('__Refs', function ($firebaseArray, $firebaseObject) {
// Might use a resource here that returns a JSON arrayf
var ref = new Firebase('https://firebasedatabase.com/');
return {
rootRef: ref,
customers: ref.child('customers'),
}
});
I can't take credit for the answer it was provide by Abimbola Idowu on HackHands.
Since I paid for the answer I thought I would share it with anyone else that might also be stumped by this.
$scope.resetPassword = function() {
$scope.errorMessage = null;
$ionicLoading.show({
template: 'Please wait...'
});
__Refs.rootRef.resetPassword({ email: $scope.user.email }, function(error) {
if (error === null) {
showConfirmation();
} else {
handleError()
}
});
};
This is the __refs service
angular.module('formulaWizard')
.factory('__Refs', function ($firebaseArray, $firebaseObject) {
// Might use a resource here that returns a JSON arrayf
var ref = new Firebase('https://firebasedatabase.com/');
return {
rootRef: ref,
}
});
I want to write a function loggedIn() in file auth.service.ts to check the token from local storage, and then verify it with firebase/php-jwt in server side. But the code in Typescript gives an infinite loop. Here is my code:
auth.service.ts
loggedIn(){
const token: string = localStorage.getItem('id_token');
if (token == null) {
return false;
}
else {
const subs = this.http.post('http://localhost/url/to/myPHP.php', {"token":token})
.map(res=>res.json()).subscribe(data=>{
if(data.valid){
this.valid = true;
} else {
this.valid = false;
}
},
err=>console.log(err));
if (this.valid){
console.log("Valid");
return true;
} else {
console.log("Invalid");
return false;
}
}
}
Given token: valid token.
Result: give no error but infinite console.log of 'Valid' as well as return true, until the Apache down.
Given token: invalid token
Result: give no error but infinite console.log of 'Invalid' as well as return false, until the Apache down.
What I have tried:
loggedIn(){
const token: string = localStorage.getItem('id_token');
if (token == null) {
return false;
}
else {
const subs = this.http.post('http://localhost/url/to/myPHP.php', {"token":token})
.map(res=>res.json()).subscribe(data=>{
if(data.valid){
this.valid = true;
} else {
this.valid = false;
}
},
err=>console.log(err));
if (this.valid){
console.log("Valid");
console.log(this.valid);
return true;
} else {
console.log("Invalid");
console.log(this.valid);
return false;
}
subs.unsubscribe();
return true;
}
}
The line subs.unsubscribe(); did stop the loop, yet it will literally unsubscribe the Observable<Response> and the code inside .subscribe() will not run. Please help.
Edit: Usage of loggedIn()
*ngIf="authService.loggedIn()
for 4 times in navbar component.
Inside auth.guard.ts
canActivate(){
if (this.authService.validToken){
return true;
} else {
this.router.navigate(['/login']);
return false;
}
}
In app.module.ts
{path:'profile', component:ProfileComponent, canActivate:[AuthGuard]}
I finally solve the problem. The problem with my code: .subscribe() is an async call (which actually scheduled for last/later execution). This is the situation:ngOnInit() : which located in component < ts > file
ngOnInit(){
this.authService.loggedIn();
console.log("10");
}
loggedIn() : which located in auth.service.ts file
loggedIn(){
const token: string = localStorage.getItem('id_token');
if (token == null) {
return false;
}
else {
const subs = this.http.post('http://localhost/url/to/myPHP.php', {"token":token})
.map(res=>res.json()).subscribe(data=>{
if(data.valid){
console.log("1");
} else {
console.log("2");
}
console.log("3")
},
err=>console.log(err));
}
}
and then the result will be :
1013 which mean, anything you do inside the subscribe will change only after you need it (in many cases). So we need to do whatever we need to, inside the subscribe(), and fire it only when needed. In my case, I want to fire it if any changes apply to token inside local storage.
This is my solution
As I want it always check with the token. I used DoCheck()
Inside auth.service.ts
verifyToken(authToken) {
const body = {token:authToken};
return this.http.post('http://localhost/url/to/myPHP.php',body)
.map(res => res.json());
}
tokenExist(): boolean {
const token: string = localStorage.getItem('id_token');
if (token == null) {
return false;
} else {
return true;
}
}
Inside navbar.component.ts
ngOnInit() {
this.curToken = localStorage.getItem('id_token');
this.loggedIn(this.curToken);
}
ngDoCheck(){
if (this.curToken != localStorage.getItem('id_token')){
this.curToken = localStorage.getItem('id_token');
this.loggedIn(this.curToken);
}
}
loggedIn(token){
if(this.authService.tokenExist()){
this.authService.verifyToken(token).subscribe(data=>{
if(data.valid){
this.validLogin = true;
} else {
console.log("Invalid Token");
this.validLogin = false;
}
});
} else {
console.log("Token Missing");
this.validLogin = false;
}
}
Of course, don't forget to implement DoCheck in the line
export class NavbarComponent implements OnInit, DoCheck
I implemented a React native Toolbar its showing me all actions which i have given but after press on that any action it gives me error. Its entering in the function that onActionSelected But after that my Logout() , Move() any function is not working.
where i am going wrong plz help
code:
<ToolbarAndroid
title="Shopcon"
style={styles.toolbar}
actions={toolbarActions}
onActionSelected={this.onActionSelected}
/>
const toolbarActions = [
{title: 'Logout', show: 'never'},
{title: 'Got to Login', show: 'never'},
];
onActionSelected(position) {
if (position === 0) {
console.log("I am in 0");
this.Logout();
}
if (position === 1) {
console.log("I am in 1");
this.Move();
}
}
async Logout() {
console.log("fun1");
const { navigate } = this.props.navigation;
try {
await AsyncStorage.removeItem(STORAGE_KEY);
Alert.alert("Logout Success! Token:" + DEMO_TOKEN)
} catch (error) {
console.log('AsyncStorage error: ' + error.message);
}
navigate("Login");
}
Move(){
console.log("fun2")
const { navigate } = this.props.navigation;
navigate("Login");
}
both are entering in onActionSelected(position) function but not entering in those other functions.
where i am going wrong please help.