Develop Reference

How to copy data from OData v4 to JSON with SAP UI5?

I'm using OData v4 to load data from my backend to my frontend (developed with SAP UI5) and I am using a form to display a detail page. When I click the "edit" button I'm able to edit the data. My implementation is similar to this example: https://sapui5.hana.ondemand.com/explored.html#/sample/sap.ui.layout.sample.Form354/code/Page.controller.js
When editing something, the data is directly edited at the model and, therefore, updated at the backend. However, I want to be able to choose if I want to save the changes or if I want to cancel the edit before it is updated at the backend.
I read on other questions that one can copy the ODataModel to a JSONModel and use that copy instead, by doing something like:
var oModel = this.getView().getModel();
var oModelJson = new sap.ui.model.json.JSONModel();
oModel.read("/Data", {
success: function(oData, response) {
oModelJson.setData(oData);
sap.ui.getCore().setModel(oModelJson, "oJSONModel");
alert("Success!");
},
error: function(response) {
alert("Error");
}
});
However, the read method seems not to be available for OData v4. the code of my controller where the data is loaded looks like following:
onInit: function() {
this.oModel = new ODataModel({
groupId : "$direct",
synchronizationMode : "None",
serviceUrl : '/odata/'
});
this.getView().setModel(this.oModel, 'oModel');
var oRouter = sap.ui.core.UIComponent.getRouterFor(this);
oRouter.getRoute("details").attachPatternMatched(this._onObjectMatched, this);
this._showFormFragment("display");
},
_onObjectMatched: function (oEvent) {
this.getView().bindElement({
path: "/Data(" + oEvent.getParameter("arguments").dataPath + ")",
model: "oModel"
});
//I want to copy the data from the ODataModel to the JSONModel here
},
What's the best way to accomplish this? And how to do it with OData v4?

I suppose you want to resetChanges in case user cancels the save.
For V2 ODataModel, there is deferedGroup concept which you can use to resetChanges or submitChanges.
I have not much experience with V4. Though from the documentation, it is possible.
Please try to pass a updateGroupId in the constructor. Then you can choose resetChanges or submitBatch by group Id.
mParameters.updateGroupId? The group ID that is used for update requests. If no update group ID is specified, mParameters.groupId is used. Valid update group IDs are undefined, '$auto', '$direct' or an application group ID, which is a non-empty string consisting of alphanumeric characters from the basic Latin alphabet, including the underscore.
Thank you!

pass Algolia id attribute instead of Name Atributre in a post request on Laravel 5.2

Using the Javascript, Vue.js and Typeahead.js way shown by Jeffery Way and Algolia docs to index json objects from the Algolia platform.
Currently when i search for the result i require and hit the submit button, It is passing the name attribute through in the post request.
How is it possible to pass the name and the id attribute or if nescessery just the ID arrtibute would work.
<script>
new Vue({
el: 'body',
data: {
query: '',
users: []
},
ready: function(){
this.client = algoliasearch("MYID", "MYAPI");
this.index = this.client.initIndex('dev_category_list');
$('#typeahead').typeahead(null, {
source: this.index.ttAdapter(),
displayKey: 'name'
});
},
methods: {
search: function(){
if (this.query.length < 3) return;
this.index.search(this.query, function(error, results){
this.users = results.hits;
}.bind(this));
}
}
})
</script>
As a total newcomer the laravel, vuejs and javascript its somewhat difficult to get to grips with the syntax and phrases used when explaining the instructons within the docs so any help would be greatly appreciated.
My indexed objects look like so:
{
"id": "3",
"name": "My Product 3",
"value": "3",
"alternative_name": "Prod 3",
"objectID": "3"
}
Im hoping to pass the value of ID or objectID along with the name attribute in a post request once the user selects the given result from the algolia drop down menu and hits the submit, just the ID would work as mentioned above if its not possible.
Thanks.
--- Update referencing Jerska: ---
Ok so after playing around as a newbie for a little bit i seem to have it working, Im not exactly sure how secure this is or how reliable one would say, Hopefully im not a million miles off from where i need to be. Be good to see what your personal and professional thoughts are.
.on('typeahead:select', function (e, suggestion) {
$('#typeahead').change(function() {
var val = suggestion.id;
$('#st').val(val);
});
I have created a hidden input field and named is 'st' for a demo and on update of the algolia results jquery is using the .change function to append the value to the hidden input fields value. That way the form can be continued and sibmitted as i originally wanted and hoped for, The benefit here is that even if the user is to select a result from algoia drop down menu then continue with the form, If he or she decides they want to go back to the search field and change it, They can do before they submit the form or before any window.location is run, I even thought of using ajax or simply jquery $.post but its working ok the .change
Look forward to hearing your thoughts.
Thanks

If you want to redirect to an item page, the typeahead:select event gives you the selected option :
$('#your-input')
.typeahead(/* ... */)
.on('typeahead:select', function (e, suggestion) {
window.location = suggestion.url;
});
from Algolia redirect to search results
You can access the selected object through the suggestion parameter. You could definitely use something like
window.location = 'YOUR_URL?id=' + suggestion.id + '&name=' + suggestion.name;
This assumes you're using typeahead.js#0.11.
typeahead.js being unmaintained, Algolia recommends to use their own fork of typeahead.js#0.10, autocomplete.js.
Here are the different event names and handlers signatures depending on what library/version you're using:
typeahead.js#0.11: typeahead:select -> function($event, suggestion)
typeahead.js#0.10: typeahead:selected -> function($event, suggestion, datasetName)
autocomplete.js: autocomplete:selected -> function($event, suggestion, datasetName)

Filter service in angularjs

I am rewriting an app that uses html, js and php into angular with rest php. I came across an issues regarding filters. In the actual form i have dropdowns that are populated ajax by js from php. The config in the js is made something like
form = new form('user-page');
form.ajaxselects = [ ['UserID', {table: 'users', DefaultValue: 5} ] ]
form.construct();
function form(formName) {
var this.ajaxselects;
function construct() {
foreach (this.ajaxselects as ajaxselect) {
$.post( ajaxselect[0], { Action:'get' },
function( data ) {
// exemplification, not real code
$(this).select(ajaxselect[0]).values = data;
}, 'json'
);
}
}
EDIT:
How it currently works with js:
I instantiate an object, called form and in that form i configure all my elements. Dropdowns, field validations etc.
After i configure (the configuration means that i say for a dropdown where to take the value from the server, what is the default value etc), for a validation i say what's the rule (it's mandatory, it's decimal).
And then when i run a function on the form object i go for each dropdown and populate it, add events validate the inputs etc.
I would like to know if i can and if yes, how, to build something like this in angular. To give to a service let's say a set of rules, something like:
['user_id', http_request:'server.com/api/populate/user_id', default_Value:1] and then i get the dropdown for users populated with the values. I don't know how to explain it better.

select2 and multiple createSearchChoice

Is possible to use in select2 the createSearchChoice method to create 2 choices at the same time?
I'm creating an input form for tags, if the tag does not exists I need to create two choices at the same time:
For example when the user types "missingtag" he needs to have two options
Create a public "missingtag" tag
Create a private "missingtag" tag

I can't see why you should not be able to create two tags at the same time. This isnt testet and part of it is c/p from http://ivaynberg.github.io/select2/.
$("#tags").select2({
createSearchChoice: function(term) {
return { data: {
{id:'public-' + term, text:'public-' + term },
{id:'private-' + term, text:'private-' + term}
}
}
});

I resolved modifying the createSearchChoice function in the js file

webOS/Ares : read JSON from URL, assign to label

I've used the webOS Ares tool to create a relatively simple App. It displays an image and underneath the image are two labels. One is static, and the other label should be updated with new information by tapping the image.
When I tap the image, I wish to obtain a JSON object via a URL (http://jonathanstark.com/card/api/latest). The typcial JSON that is returned looks like this:
{"balance":{"amount":"0","amount_formatted":"$0.00","balance_id":"28087","created_at":"2011-08-09T12:17:02-0700","message":"My balance is $0.00 as of Aug 9th at 3:17pm EDT (America\/New_York)"}}
I want to parse the JSON's "amount_formatted" field and assign the result to the dynamic label (called cardBalance in main-chrome.js). I know that the JSON should return a single object, per the API.
If that goes well, I will create an additional label and convert/assign the "created_at" field to an additional label, but I want to walk before I run.
I'm having some trouble using AJAX to get the JSON, parse the JSON, and assign a string to one of the labels.
After I get this working, I plan to see if I can load this result on the application's load instead of first requiring the user to tap.
So far, this is my code in the main-assistant.js file. jCard is the image.
Code:
function MainAssistant(argFromPusher) {}
MainAssistant.prototype = {
setup: function() {
Ares.setupSceneAssistant(this);
},
cleanup: function() {
Ares.cleanupSceneAssistant(this);
},
giveCoffeeTap: function(inSender, event) {
window.location = "http://jonathanstark.com/card/#give-a-coffee";
},
jcardImageTap: function(inSender, event) {
//get "amount_formatted" in JSON from http://jonathanstark.com/card/api/latest
//and assign it to the "updatedBalance" label.
// I need to use Ajax.Request here.
Mojo.Log.info("Requesting latest card balance from Jonathan's Card");
var balanceRequest = new Ajax.Request("http://jonathanstark.com/card/api/latest", {
method: 'get',
evalJSON: 'false',
onSuccess: this.balanceRequestSuccess.bind(this),
onFailure: this.balanceRequestFailure.bind(this)
});
//After I can get the balance working, also get "created_at", parse it, and reformat it in the local time prefs.
},
//Test
balanceRequestSuccess: function(balanceResponse) {
//Chrome says that the page is returning X-JSON.
balanceJSON = balanceResponse.headerJSON;
var balanceAmtFromWeb = balanceJSON.getElementsByTagName("amount_formatted");
Mojo.Log.info(balanceAmtFromWeb[0]);
//The label I wish to update is named "updatedBalance" in main-chrome.js
updatedBalance.label = balanceAmtFromWeb[0];
},
balanceRequestFailure: function(balanceResponse) {
Mojo.Log.info("Failed to get the card balance: " + balanceResponse.getAllHeaders());
Mojo.Log.info(balanceResponse.responseText);
Mojo.Controller.errorDialog("Failed to load the latest card balance.");
},
//End test
btnGiveCoffeeTap: function(inSender, event) {
window.location = "http://jonathanstark.com/card/#give-a-coffee";
}
};
Here is a screenshot of the application running in the Chrome browser:
In the browser, I get some additional errors that weren't present in the Ares log viewer:
XMLHttpRequest cannot load http://jonathanstark.com/card/api/latest. Origin https://ares.palm.com is not allowed by Access-Control-Allow-Origin.
and
Refused to get unsafe header "X-JSON"
Any assistance is appreciated.

Ajax is the right tool for the job. Since webOS comes packaged with the Prototype library, try using it's Ajax.Request function to do the job. To see some examples of it, you can check out the source code to a webOS app I wrote, Plogger, that accesses Blogger on webOS using Ajax calls. In particular, the source for my post-list-assistant is probably the cleanest to look at to get the idea.
Ajax is pretty much the way you want to get data, even if it sometimes feels like overkill, since it's one of the few ways you can get asynchronous behavior in JavaScript. Otherwise you'd end up with code that hangs the interface while waiting on a response from a server (JavaScript is single threaded).