I am using worlight JSONstore. I am new to it. I tried searching that read all docs but didn't get much idea.
I have one login page from that I get some json data I want to store that data using jsonstore. and get that afterwards.
I made jsonstore adapter.
Json-Store-Impl.js
function getJsonStores(custData) {
var data = custData;
return data;
//custdata is json
}
function addJsonStore(param1) {
var input = {
method : 'put',
returnedContentType : 'json',
path : 'userInputRequired'
};
return WL.Server.invokeHttp(input);
}
function updateJsonStore(param1) {
var input = {
method : 'post',
returnedContentType : 'json',
path : 'userInputRequired'
};
return WL.Server.invokeHttp(input);
}
function deleteJsonStore(param1) {
var input = {
method : 'delete',
returnedContentType : 'json',
path : 'userInputRequired'
};
return WL.Server.invokeHttp(input);
}
after that I Create a local JSON store.
famlCollection.js
;(function () {
WL.JSONStore.init({
faml : {
searchFields: {"response.mci.txnid":"string","response.mci.scrnseqnbr":"string","response.loginUser":"string","request.fldWebServerId":"string","response.fldRsaImageHeight":"string","request.fldRequestId":"string","request.fldTxnId":"string","response.fldDeviceTokenFSO":"string","response.fldRsaCollectionRequired":"string","response.datlastsuccesslogin":"string","response.fldRsaUserPhrase":"string","response.fldRsaAuthTxnId":"string","response.rc.returncode":"string","response.datcurrentlogin":"string","response.mci.deviceid":"string","response.customername":"string","request.fldDeviceId":"string","response.fldRsaUserStatus":"string","request.fldScrnSeqNbr":"string","response.fldRsaImageWidth":"string","request.fldLangId":"string","response.fldTptCustomer":"string","response.encflag":"string","response.rc.errorcode":"string","response.fldRsaImagePath":"string","response.mci.appid":"string","response.mci.requestid":"string","response.rc.errormessage":"string","response.mci.appserverid":"string","response.fldRsaCollectionType":"string","request.fldAppId":"string","response.fldRsaImageId":"string","request.fldLoginUserId":"string","response.mci.sessionid":"string","response.mci.langid":"string","response.mci.remoteaddress":"string","request.fldAppServerId":"string","response.mci.webserverid":"string","response.fldRsaImageText":"string","response.fldRsaEnrollRequired":"string","response.fldRsaActivityFlag":"string"},
adapter : {
name: 'JsonStore',
replace: 'updateJsonStore',
remove: 'deleteJsonStore',
add: 'addJsonStore',
load: {
procedure: 'getJsonStores',
params: [],
key: 'faml'
},
accept: function (data) {
return (data.status === 200);
}
}
}
}, {
password : 'PleaseChangeThisPassword'
})
.then(function () {
WL.Logger.debug(['Take a look at the JSONStore documentation and getting started module for more details and code samples.',
'At this point there is no data inside your collection ("faml"), but JSONStore is ready to be used.',
'You can use WL.JSONStore.get("faml").load() to load data from the adapter.',
'These are some common JSONStore methods: load, add, replace, remove, count, push, find, findById, findAll.',
'Most operations are asynchronous, wait until the last operation finished before calling the next one.',
'JSONStore is currently supported for production only in Android and iOS environments.',
'Search Fields are not dynamic, call WL.JSONStore.destroy() and then initialize the collection with the new fields.'].join('\n'));
})
.fail(function (errObj) {
WL.Logger.ctx({pretty: true}).debug(errObj);
});
}());
When I clicked on login button I call getJsonStores like this -
getJsonStores = function(){
custData = responseData();
var invocationData = {
adapter : "JsonStore",
procedure : "getJsonStores",
parameters : [custData],
compressResponse : true
};
//WL.Logger.debug('invoke msg '+invocationData, '');
WL.Client.invokeProcedure(invocationData, {
onSuccess : sucess,
onFailure : AdapterFail,
timeout: timeout
});
};
I followed these steps
Is this right way? and how can I check jsonstore working locally or not? and how can I store my jsondata in JSONStore? Where should I initialize the wlCommonInit function in project?
plz Help me out.
Open main.js and find the wlCommonInit function, add the JSONStore init code.
WL.JSONStore.init(...)
You already have an adapter that returns the data you want to add to JSONStore, call it any time after init has finished.
WL.Client.invokeProcedure(...)
Inside the onSuccess callback, a function that gets executed when you successfully get data from the adapter, start using the JSONStore API. One high level way to write the code would be, if the collection is empty (the count API returns 0), then add all documents to the collection.
WL.JSONStore.get(collectionName).count()
.then(function (countResult) {
if(countResult === 0) {
//collection is empty, add data
WL.JSONStore.get(collectionName).add([{name: 'carlos'}, {name: 'mike'}])
.then(function () {
//data stored succesfully
});
}
});
Instead of adding [{name: 'carlos'}, {name: 'mike'}] you probably want to add the data returned from the adapter.
Later in your application, you can use the find API to get data back:
WL.JSONStore.get(collectionName).findAll()
.then(function (findResults) {
//...
});
There is also a find API that takes queries (e.g. {name: 'carlos'}), look at the getting started module here and the documentation here.
It's worth mentioning that the JSONStore API is asynchronous, you must wait for the callbacks in order to perform the next operation.
Related
I have trouble storing a JSON file in my DynamoDB table with the help of my Lambda function and my API Gateway on AWS. I have the following piece of code which gets executed once I press a button on my HTML site:
$('#submit').on('click', function(){
var example = {"number":"121212"};
$.ajax({
type: 'POST',
url: API_URL,
data: JSON.stringify(example),
contentType: "application/json",
success: function(data){
location.reload();
}
});
return false;
});
When pressed the website reloads, hence I assume function has successfully executed. However my problem is that the data does not arrive in the correct format in the lambda function and hence does not execute properly. When checking in CloudWatch it is shown as { number: '121212' } instead of {"number":"121212"}. Any idea how I can make sure that the value 'arrives' has a valid JSON format in my Lambda function?
Here's my Lambda function:
exports.handler = function index(e, ctx, callback) {
var params = {
Item: { number: e.number },
TableName: 'collectionOfNumbers'
};
docCLient.put(params, function(err, data) {
if (err) {
callback(err, null);
} else {
callback(null, data);
}
});
}
If I'm reading this right, e.number is the value of the JSON parameter 'number' that you are passing in, e.g. '121212'. I'm making the assumption from the usage that docClient is putItem under the hood.
I think your Item param should look like:
Item: {"number": {N: e.number}}
See AWS Docs for info regarding PutItem https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_PutItem.html
I'm new to Backbone, and I am trying to do a get request (getDivisions) and store the response JSON into 'divisions', defined in my defaults. I logged 'divisions' inside the service call, and outside the service call, as seen below.
define(['underscore', 'backbone', 'service-manager', 'backbone-nested'],
function(_, Backbone, svgmgr) {
return Backbone.NestedModel.extend({
defaults: {
message: "",
divisions: []
},
initialize: function () {
this.getDivisions();
},
getDivisions: function() {
var that = this;
svgmgr.Interface.call('getDivisions').done(function(data) {
that.set('divisions', data);
console.log("Inside the service call: " + that.get('divisions'));
});
console.log("Outside service call" + this.get('divisions'));
}
});
});,
In Dev Tools, the 'Outside the service call' log was called first, returning a blank array (it's default), while the 'Inside the service call' log was called after that, returning the correct response data. This is obviously not what I want.
How do I get this model to run this service call on initialize, so that when I reference 'divisions' I get back the response data?
First you don't need a Model but a Collection, and second Backbone can handle the ajax call for you.
So you have to do like this :
var Division = Backbone.Model.extend({
urlRoot: /* url to get a single division */,
defaults: {...}
});
var Divisions = Backbone.Collection.extend({
url: /* url to get all your divisions */,
model: Division,
initialize: function () {
this.fetch({
success: function(response) {
// you get the result here
}
});
}
});
I tried to accomplish the tutorial here, and when I used their data service, it worked just fine.
I modified the source to my data service (WCF Data Service v5.6, OData V2), and the list just shows the Loading sign and nothing happens.
The code should load any data type, it just has to be mapped accordingly. My service is availabe through the browser, I checked.
Here is the code:
DevExTestApp.home = function (params) {
var viewModel = {
dataSource: DevExpress.data.createDataSource({
load: function (loadOptions) {
if (loadOptions.refresh) {
try {
var deferred = new $.Deferred();
$.get("http://192.168.1.101/dataservice/dataservice.svc/People")
.done(function (result) {
var mapped = $.map(result, function (data) {
return {
name: data.Name
}
});
deferred.resolve(mapped);
});
}
catch (err) {
alert(err.message);
}
return deferred;
}
}
})
};
return viewModel;
}
What else should I set?
The try-catch block would not help is this case, because data loading is async. Instead, subscribe to the fail callback:
$.get(url)
.done(doneFunc)
.fail(failFunc);
Another common problem with accessing a web service from JavaScript is Same-Origin Policy. Your OData service have to support either CORS or JSONP. Refer to this discussion.
I have a service which retrieves data from the datastore (Web SQL). Afterwards, it stores the data in a AngularJS array. The problem is that this does not initiate changes to the UI.
Contrary, if after the retrieval of data from datastore, I call a web services using a $get method and append the results to the previous array, all data updates the UI.
Any suggestions? Is it possible that I fill the array before the Angular binds the variable?
Can I somehow delay the execution of the service?
Most of the code has been taken from the following example: http://vojtajina.github.io/WebApp-CodeLab/FinalProject/
In order for the UI to magically update, some changes must happen on properties of the $scope. For example, if retrieving some users from a rest resource, I might do something like this:
app.controller("UserCtrl", function($http) {
$http.get("users").success(function(data) {
$scope.users = data; // update $scope.users IN the callback
}
)
Though there is a better way to retrieve data before a template is loaded (via routes/ng-view):
app.config(function($routeProvider, userFactory) {
$routeProvider
.when("/users", {
templateUrl: "pages/user.html",
controller: "UserCtrl",
resolve: {
// users will be available on UserCtrl (inject it)
users: userFactory.getUsers() // returns a promise which must be resolved before $routeChangeSuccess
}
}
});
app.factory("userFactory", function($http, $q) {
var factory = {};
factory.getUsers = function() {
var delay = $q.defer(); // promise
$http.get("/users").success(function(data){
delay.resolve(data); // return an array of users as resolved object (parsed from JSON)
}).error(function() {
delay.reject("Unable to fetch users");
});
return delay.promise; // route will not succeed unless resolved
return factory;
});
app.controller("UserCtrl", function($http, users) { // resolved users injected
// nothing else needed, just use users it in your template - your good to go!
)
I have implemented both methods and the latter is far desirable for two reasons:
It doesn't load the page until the resource is resolved. This allows you to place a loading icon, etc, by attaching handlers on the $routeChangeStart and $routeChangeSuccess.
Furthermore, it plays better with 'enter' animations in that, all your items don't annoyingly play the enter animation every time the page is loaded (since $scope.users is pre populated as opposed to being updated in a callback once the page has loaded).
Assuming you're assigning the data to the array in the controller, set an $scope.$apply() after to have the UI update.
Ex:
$scope.portfolio = {};
$scope.getPortfolio = function() {
$.ajax({
url: 'http://website.com:1337/portfolio',
type:'GET',
success: function(data, textStatus, jqXHR) {
$scope.portfolio = data;
$scope.$apply();
},
error: function(jqXHR, textStatus, errorThrown) {
console.log(errorThrown);
}
});
};
I need a way to catch the JSON response every time my datastore has loaded. My first try was to use the autoLoad property but the callback fires only on first load :
autoLoad: {
callback: function (records, operation) {
// do something with operation.response.responseText
}
}
So, I have decided to extend the load method :
load: function (options) {
var callback = options && options.callback;
return this.callParent([Ext.apply(options || {}, {
callback: function (records, operation) {
// do something with operation.response.responseText
if (callback) {
return callback.apply(this, arguments);
}
}
})]);
}
It works, but I wonder if the framework already provides a more elegant solution.
You can add a load listener to the store and grab the current request from it's proxy when the load event is fired.
var myStore = Ext.create("Ext.data.store", {
...whatever here
listeners: {
load: function(store){
store.getProxy().activeRequest.options.operation.response.responseText;
}
}
});
Thats if you want the response text specifically. If you want the response as a JSON object, you can use store.getProxy().reader.rawData; which is a little simpler