I'm implementing a system and I need to set the timezone for the device depending on the item selected from a list that I'm showing to the user.
This is the design the customer wants:
I managed to implement this design. The problem is how can I set the timezone in the system, using only the code from the list? (for example: "UTC-12:00")
I've been reading around and the solution proposed is to use Javascript moment library, but it doesn't allow me to change the timezone like this.
The code I tried for the Save button is this:
saveTimeZone() {
if ( this.newTimeZone ) {
moment( new Date() ).tz.setDefault( this.newTimeZone );
}
}
And the value newTimeZone is setted up when clicked the list item:
selectTimeZone( item ) {
if ( this.getTime !== item ) {
this.newTimeZone = item;
this.disableSafeBtn = false;
}
}
Does anyone have any workaround for this?
Related
The Problem
I just cannot figure out the view model in NativeScript
I am having a hard time understanding how view-models work in NativeScript. I understand the high level concept - that the MVVM pattern allows us to create observable objects - and our UI is updated when values change.
Here is a simple example:
main-page.js
var createViewModel = require("./main-view-model").createViewModel;
function onNavigatingTo(args) {
var page = args.object;
page.bindingContext = createViewModel();
}
exports.onNavigatingTo = onNavigatingTo;
main-view-model.js
var Observable = require("tns-core-modules/data/observable").Observable;
function getMessage(counter) {
if (counter <= 0) {
return "Hoorraaay! You unlocked the NativeScript clicker achievement!";
} else {
return counter + " taps left";
}
}
function createViewModel() {
var viewModel = new Observable();
viewModel.counter = 42;
viewModel.message = getMessage(viewModel.counter);
viewModel.onTap = function() {
this.counter--;
this.set("message", getMessage(this.counter));
}
return viewModel;
}
exports.createViewModel = createViewModel;
I understand , some what, what is happening. But not everything.
Questions I Have ...
How would you add a new function , for instance, an email validation function? Would it go into the View Model page, or just plain Javscript page?
Let's say I added a new textfield to the UI. I have a tap function. Where does my function go?
So in this case, everything related to the UI should go in the createViewModel function? Is that correct?
I have also seen in sample apps, where the developer doesn't use view models at all - it appears he just creates it as an observable object.
Thank you for looking. I know I am close to understanding, but that bindingContext and the viewmodel has me a bit confused. [ I have read everything in NS docs ]
John
The answer is either of it should work. You may put the validation or tap function in view model or in the code behind file, it's upto you to decide which works best for you.
If you put it in the view model, you will use event binding (tap="{{ functionName }}" Or if you put it in code behind file, you will just export the function name and simply refer the function name on XML (tap="functionName").
By giving this flexibility you are allowed to separate your code, keep the files light weighted.
I'm having a look at Vue.js with a view to simplifying an application which is starting to get a bit too complex with jQuery. I want to utilise the data binding so that the state of an 'Order' object automatically enables or disables certain buttons (e.g., I want the submit button to be automatically disabled unless an order, containing items, exists). I have something which partly works, with this declaration:
var content = new Vue({
el: '#content',
computed: {
orderExists: function () {
return (shopOrder != null && !isEmpty(shopOrder.items));
}
}
});
I use it in a button like this:
<button type="button" id="btnDisplay" v-bind:disabled="!orderExists">Show Selected</button>
On page load, the buttons using this technique are indeed enabled/disabled correctly. However, when I add items to the order object, thereby changing its state, I'm not seeing any update in the buttons' states - they should be being enabled.
I assume I'm misunderstanding something basic about how this works with Vue.js, as I've only spent a couple of hours with it, so any help would be appreciated.
Hmmm why not pass the property as reactive data?
You can do something like:
...
computed: {
orderExists: function () {
this.disabled = (shopOrder != null && !isEmpty(shopOrder.items));
}
}
Fiddle.
DP: the example is in Vue 2
The issue is that Vue has to manage your data objects in order to set them up in a way where it can observe the changes to them (i.e. be made reactive). This is done by specifying the data option to your Vue creation. Something like:
data: {
shopOrder: null
}
Then update your code like this:
orderExists: function () {
return (this.shopOrder != null && !isEmpty(this.shopOrder.items));
}
And of course at some point you need to set this.shopOrder to a valid order object.
I am using extjs 4.1.1a for developing some application.
I had a form consisting of two combo-boxes and an item-selector.
Based on the value selected in first combo-box , the itemselector will load its data from database. This is working fine.
My problem is, if i reselect the first combo-box the new data will be displayed in itemselector along with previous data displayed in itemseletor .That is previous data displayed in itemselector will remain there itself.
for example: name "test1" consists of ids 801,2088,5000. on selecting test1 in firstcombobox itemselector must show output as below.
and if "test2" consists of ids 6090,5040. on selecting test2 in firstcombobox itemselector must show output as below.
problem is. for first time if i select "test1" from firstcombobox , output will come as expected. if i reselect "test2" from firstcombobox , output will come as below.
as you can see, previous data displayed (marked in red rectagle) remains there itself with new data displayed (marked with green rectangle).
I want for every reselection of first combobox, previously displayed data in itemselector to be erased before printing new data on itemselector.
How can I reset the itemselector for every reselection of first combobox?
You should remove all items from the store of the itemselector by the removeAll command. After that you should load the store of the itemselector.
itemselector.store.removeAll();
itemselector.store.load();
Any solutions above solve my problem.
i found solution from Sencha Forum.
https://www.sencha.com/forum/showthread.php?142276-closed-Ext-JS-4.0.2a-itemselector-not-reloading-the-store
in the itemselector.js file, change the line marked below.
populateFromStore: function(store) {
var fromStore = this.fromField.store;
// Flag set when the fromStore has been loaded
this.fromStorePopulated = true;
// THIS LINE BELOW MUST BE CHANGED!!!!!!!!!!!!
fromStore.loadData(store.getRange()); //fromStore.add(store.getRange());
// setValue waits for the from Store to be loaded
fromStore.fireEvent('load', fromStore);
},
You need to insert...
this.reset();
at the head of the function that is inserting the data.
As an example...
Ext.override( Ext.ux.ItemSelector, {
setValue: function(val) {
this.reset();
if (!val) return;
val = val instanceof Array ? val : val.split(this.delimiter);
var rec, i, id;
for (i = 0; i < val.length; i++) {
var vf = this.fromMultiselect.valueField;
id = val[i];
idx = this.toMultiselect.view.store.findBy(function(record){
return record.data[vf] == id;
});
if (idx != -1) continue;
idx = this.fromMultiselect.view.store.findBy(function(record){
return record.data[vf] == id;
});
rec = this.fromMultiselect.view.store.getAt(idx);
if (rec) {
this.toMultiselect.view.store.add(rec);
this.fromMultiselect.view.store.remove(rec);
}
}
}
});
are u got it?
when u select that combobox frist stoe of item selector is null after store load with ur pass the para meters
for example
store.load(null),
store.proxey.url='jso.php?id='+combobox.getrawvalue(),
store.load();
like that so when ur select a value in ur combobox that time ur used a listeners to ur combobox in that listners ur used above code , select ur some value in combobox that time frist store is get null after ur pass some values to json.php then store load with responce so that time old data is remove and new data load in that store
if u post ur code i will give correct code
I ran into the same issue with ExtJS 4.2.1. I got it to work by calling reload() on the data store and then setValue() with an empty string on the item selector in the data store's reload() callback.
Ext.create("Ext.form.field.ComboBox", {
// Other properties removed for brevity
listeners: {
change: function(field, newValue, oldValue, eOpts) {
Ext.getStore("ExampleStore").reload({
callback: function() {
Ext.getCmp("ExampleItemSelector").setValue("");
}
});
}
}
});
Ext.create("Ext.data.Store", {
storeId: "ExampleStore",
// Other properties removed for brevity
});
Ext.create("Ext.form.FormPanel", {
// Other properties removed for brevity
items:[{
xtype: "itemselector",
id: "ExampleItemSelector",
// Other properties removed for brevity
}]
});
For any folks that are curious, I'm fairly convinced there's a bug in the item selector's populateFromStore() function. When the function is called, it blindly adds all of the values from the bound store (store) to the internal store (fromStore). I suspect there should be a call to fromStore.removeAll() prior to the call to fromStore.add(). Here's the relevant code from ItemSelector.js.
populateFromStore: function(store) {
var fromStore = this.fromField.store;
// Flag set when the fromStore has been loaded
this.fromStorePopulated = true;
fromStore.add(store.getRange());
// setValue waits for the from Store to be loaded
fromStore.fireEvent('load', fromStore);
},
EDIT 12/18/2013
If you've configured any callback events on the item selector (e.g. change), you may want to disable the events temporarily when you call setValue(""). For example:
var selector = Ext.getCmp("ExampleItemSelector");
selector.suspendEvents();
selector.setValue("");
selector.resumeEvents();
I had the same problem and finally I decided to modify the extjs source code, not considering it a big issue as extjs itself its saying in the start of the file
Note that this control will most likely remain as an example, and not as a core Ext form
control. However, the API will be changing in a future release and so should not yet be
treated as a final, stable API at this time.
Based on that, as jstricker guessed (and sadly I didn't read and took me a while to arrive to the same conclusion), adding fromStore.removeAll() before fromStore.add() solves the problem.
Outside of the problem (but I think it can be interesting as well), additionally, I also added listConfig: me.listConfig in the MultiSelect configuration (inside createList), that way it's possible to format each item additional options (such as images, etc.) setting in the 'itemselector' the option listConfig as it's explained in the (irrealistic) documentation.
Need to reset the store used in ItemSelector that can be done by setting Empty object like below. Also need to call clearValue() method of ItemSelector component.
store.setData({});
ItemSelectorComponent.clearValue();
I'm new to Rally's SDK. I'm trying to create a Kanban board that only shows the cards where the owner field = the person who's logged in (i.e. a My Kanban Board). What code should I add and where should I add it?
The following isn't my ideal answer to this issue, but I'd thought I'd post in case it helps someone else. I took the code from the Filter Epic post as suggested and modified it. It's not ideal for me because the filter occurs after the initial data pull, so it is only filtering the first 100 records the initial query pulled. Ideally, I want to change the initial pull of data to filter on username.
After this code in the Filtering Epic:
for (i=0;i<workproducts.length;i++) {
thisWorkProduct = workproducts[i];
Add:
//get the owner field value
var owner = "";
if (thisWorkProduct.Owner) {
if (thisWorkProduct.Owner.DisplayName) {
owner = thisWorkProduct.Owner.DisplayName;
}
else if (thisWorkProduct.Owner.UserName) {
owner = thisWorkProduct.Owner.UserName;
}
}
And then change:
if (thisWorkProduct.Children.length === 0) {
To:
if ((thisWorkProduct.Children.length === 0) && (owner === "__USER_NAME__")) {
And add in an if in the defects else (so it will now look like this):
else {
// If it's a Defect, it has no children so push it
if (owner === "__USER_NAME__") {
childlessWorkProducts.push(thisWorkProduct);
}
It's probably not the most efficient code because I'm new to javascript.
And if anyone has suggestions on how to do the username filter in the initial data pull, I'd love to hear them.
You can filter on the initial data pull by including a query in the cardboardConfig object:
var cardboardConfig = {
//... other properties
query: new rally.sdk.util.Query('Owner = /user/__USER_OID__')
};
Check out this answer:
Filtering epics from Kanban board
It would be pretty straightforward to adapt the filtering callback to filter by Owner instead of just child-less artifacts.
I am rather new to sencha touch, I've done a lot of research and tutorials to learn the basics but now that I am experimenting I have run into a problem that I can't figure out.
I have a basic DataList which gets its data from a store which displays in a xtemplate.
Within this template I have created a member function which requires store field data to be parsed as a parameter.
I would like to make a thumbnail image (that's source is pulled from the store) execute the member function on click/tap.
I can't find any information on this within the docs, does anyone know the best way to go about this?
Here is a code example (pulled from docs as I can't access my actual code right now).
var tpl = new Ext.XTemplate(
'<p>Name: {name}</p>'
{
tapFunction: function(name){
alert(name);
}
}
);
tpl.overwrite(panel.body, data);
I want to make the paragraph clickable which will then execute the tapFunction() member function and pass the {name} variable.
Doing something like onclick="{[this.tapFunction(values.name)]} " does not seem to work.
I think functions in template are executed as soon as the view is rendered so I don't think this is the proper solution.
What I would do in your case is :
Add a unique class to your < p > tag
tpl : '<p class="my-p-tag">{name}</p>'
Detect the itemtap event on the list
In your dataview controller, you add an tap event listener on your list.
refs: {
myList: 'WHATEVER_REFERENCE_MATCHES_YOUR_LIST'
},
control: {
myList: {
itemtap: 'listItemTap'
}
}
Check if the target of the tap is the < p > tag
To do so, implement your listItemTap function like so :
listItemTap: function(list,index,target,record,e){
var node = e.target;
if (node.className && node.className.indexOf('my-p-tag') > -1) {
console.log(record.get('name'));
}
}
Hope this helps