I am trying to get Kendo Grid data which is hydrated from client side to a MVC controller method. My view contains several single fields like name, date of birth etc and tabular field which I hooked with a Kendo Grid. Since its a new operation I have no data in the grid ( and other fields) and user enters them from client side.
I have no idea how to proceed on this. Ideally I would like to get this data to a list in my viewmodal. So that when the user hits save, I have all other data and the grid data coming into a controller method.
I am able to successfully bind a list with kendo grid and display it. I have very little experience on JavaScript and Kendo and web programming.
If any of you can point me to the right direction, sample code would be greatly appreciated.
$("#departmet").kendoGrid({
dataSource: dataSource,
height: 250,
scrollable: true,
sortable: true,
filterable: true,
pageable: {
input: true,
numeric: false
},
columns: [
"DepartmentName",
"SubDivision"
]
});
From experience I know their documentation is not easy to navigate. It seems there is the documentation and then the API. The API is usually what you will always want to find. What you will need is the information from here https://docs.telerik.com/kendo-ui/api/javascript/ui/grid. If I understand the question correctly. There are several ways you can achieve posting. You could make use of editor templates. Click the Open in Dojo to get an idea how it looks.
https://docs.telerik.com/kendo-ui/api/javascript/ui/grid/configuration/editable.template
With this you do not have to worry about modifying the data via javascript. Assuming your grid is surrounded with a form element it will get posted when submitted. Note paging is not accounted for here. Also, this method by default can auto post after each edit. If you don't want this behavior then you will have to have advanced knowledge of the API.....Correction on that last statement. The API is different when dealing with the data all on the client side. Click the Open in Dojo to see it all on the client side. If you are not wanting to use editor templates and want to manage the data editing yourself then you need to use the grid methods provided.
Once you have your grid created. To access the data source of the grid you will need to get the dataSource.
$('#departmet').data('kendoGrid').dataSource;
https://docs.telerik.com/kendo-ui/api/javascript/data/datasource
If you need to use a different data source(or change it) you can use the setDataSource method below(grid function).
https://docs.telerik.com/kendo-ui/api/javascript/ui/grid/methods/setdatasource
To add to the data source use the add function to add a new object.
$('#departmet').data('kendoGrid').dataSource.add({ id: 2, name: 'name'});
https://docs.telerik.com/kendo-ui/api/javascript/data/datasource/methods/add
It is important with kendo to ALWAYS use the methods provided to change the data source so that the proper events can fire to update the UI accordingly. This includes if you need to set a property on a specific data item. In that case you need to use the set method on the item itself.
After you are done modifying your data. Within javascript get the data and either create DOM elements within a form
//JQuery sudo code example
var data = $("#departmet").data("kendoGrid").dataSource.data();
var dataLen = data.length;
var myForm = $('#my-form'); //Already within DOM
for (var i = 0; i < dataLen; i++) {
var item = data[i];
var idEl = $('<input type="hidden" name="userData[' + i + '].id" />');
idEl.val(item.id);
var nameEl = $('<input type="hidden" name="userData[' + i + '].name" />');
nameEl.val(item.name);
myForm.append(idEl);
myForm.append(nameEl);
}
myForm.submit();
This assumes your controller function(??) on the backend is expecting an array of objects with the property name of userData.
Alternatively, you can post it via ajax. For example, the ajax jquery function. Passing your data as the data of the ajax call.
http://api.jquery.com/jquery.ajax/
Don't want to ramble. Let me know if you need more help.
SO won't let me comment yet so have to add another answer. You will not need to define the data source within the .NET code when dealing with client only data. Just use this.
.DataSource(dataSource => dataSource
.Ajax()
.ServerOperation(false)
)
If you will have data coming from the backend then you need to use the generic-less constructor and pass in the object else keep what you have.
Html.Kendo().Grid(Model.MyList)
However, if you are preprocessing some client data on the screen that you want to initialize then you will need to do this on ready. Don't worry about the schema part of the data source. It already knows this when you used the .NET MVC wrapper because you gave it the schema(type) via the generic or the parameter provided.
var initialDS= new kendo.data.DataSource({
data: [
{ ActionName: "Some Name", ActionType: "Some Type" }
]
});
$(document).ready(function () {
$('#docworkflow').data('kendoGrid').setDataSource(initialDS);
});
As I mentioned in the other answer. Use the data source functions for adding additional data to the data source. No need to setDataSource each time you want to add. Just
//Assuming you have 2 inputs on the screen the user is entering info into
var nameEntry = $('#action-name').val();
var typeEntry = $('#action-type').val();
$('#docworkflow').data('kendoGrid').dataSource.add({ ActionName: nameEntry , ActionType: typeEntry });
So after some efforts I come up with. But I don't know where to specify the
data in the html code. Is it possible this way?
#(Html.Kendo().Grid <DockData.Action> ()
.Name("docworkflow")
.Columns(columns =>
{
columns.Bound(e => e.ActionName);
columns.Bound(e => e.ActionType);
}).DataSource( **How do I load a script variable here***)
//This script variable should be fed to the above code.
This variable is populatedwhen the user adds data from the UI which works fine.
var dataSource = new kendo.data.DataSource({
data: result,
schema: {
model: {
fields: {
ActionName: { type: "string" },
ActionType: { type: "string" }
}
}
},
pageSize: 20
});
Related
Hi I am just beginning with angular and I am struggling to find the answer to what I'm sure is quite a simple thing to do.
I am currently getting the values of some input boxes and pushing them into my scope. This is creating one long 'array' eg:
['data-1','data-2','data-3']
I would like to format my data in the following way instead
$scope.data = [
{
'header1': 'data1-1',
'header1': 'data1-2',
'header1': 'data1-3'
},
{
'header1': 'data2-1',
'header1': 'data2-2',
'header1': 'data2-3'
}
]
This is my function as it currently is.
$scope.createRow = function(){
angular.forEach(angular.element("input"), function(value, key){
$scope.td.push($(value).val());
});
}
Any help or pointers would be greatly appreciated as I am just getting my head round the angular way
Doing this isn't hard... but before I give you a gun to shoot yourself in the foot, just to say that I think it would be beneficial to explain WHY you want structure in that other format you are mentioning. You seem to have lots of data repetition and that's always a red flag.
Now for the code, you just need to create object before pushing it to the array like:
$scope.createRow = function(){
angular.forEach(angular.element("input"), function(value, key){
var obj = {
"header1": val + "-1",
"header2": val + "-2"
};
$scope.td.push(obj);
});
}
EDIT:
OK, so you are trying to add new row to the table. First of all, you shouldn't be doing angular.forEach, but rather those input elements in HTML should bind to existing scope object, like:
// obviously use better names than Input1Value
// I am here just giving you example
$scope.bindData = {
Input1Value: null,
Input2Value: null
};
// in HTML you will do
// <input ng-model="bindData.Input1Value" />
// <input ng-model="bindData.Input2Value" />
Now that you've eliminated that nasty angular.forEach you need to have some kind of event handler, for example when user clicks the button you want to add this object to the array to which table is data bound. Just be sure to clone the $scope.bindData object when you add it to array.
$scope.createRow = function(){
var newRowData = $scope.cloneObject($scope.bindData);
$scope.td.push(newRowData);
}
// http://heyjavascript.com/4-creative-ways-to-clone-objects/
// https://stackoverflow.com/questions/728360/most-elegant-way-to-clone-a-javascript-object
$scope.cloneObject = function(objToClone) {
var newObj = (JSON.parse(JSON.stringify(objToClone)));
}
To close this answer off - keep in mind, if you ever find yourself directly referencing HTML DOM elements in Javascript with AngularJS - you are doing something wrong. It's a nasty habit to eliminate, especially if you are coming from jQuery background (and how doesn't?), where everything is $("#OhHiThere_ElementWithThisId).
Obviously the main thread on this topic on StackOverflow is this one:
“Thinking in AngularJS” if I have a jQuery background?
However I find that it's too theoretical, so Google around and you may find better overviews like:
jQuery vs. AngularJS: A Comparison and Migration Walkthrough
I have problems binding this JSON to my list view.
http://pubapi.cryptsy.com/api.php?method=marketdatav2
No data is displayed.
Data.js
(function () {
"use strict";
var _list;
WinJS.xhr({ url: 'http://pubapi.cryptsy.com/api.php?method=marketdatav2' }).then(
function (response) {
var json = JSON.parse(response.responseText);
_list = new WinJS.Binding.List(json.return.markets);
},
function (error) {
//handle error
}
);
var publicMembers =
{
itemList: _list
};
WinJS.Namespace.define("DataExample", publicMembers);
})();
HTML:
<section aria-label="Main content" role="main">
<div id="listItemTemplate" data-win-control="WinJS.Binding.Template">
<div class="listItem">
<div class="listItemTemplate-Detail">
<h4 data-win-bind="innerText: label"></h4>
</div>
</div>
</div>
<div id="listView" data-win-control="WinJS.UI.ListView" data-win-options="{itemDataSource : DataExample.itemList, itemTemplate: select('#listItemTemplate'), layout: {type: WinJS.UI.GridLayout}}"></div>
</section>
I feel that the API is not that well formed.
Isnt this part a bit odd?
"markets":{"ADT/XPM":{...}...}
There are three things going on in your code here.
First, a ListView must be bound to a WinJS.Binding.List's dataSource property, not the List directly. So in your HTML you can use itemDataSource: DataExample.itemList.dataSource, or you can make your DataExample.itemList dereference the dataSource at that level.
Second, you're also running into the issue that the declarative binding of itemDataSource in data-win-options is happening well before DataExample.itemList is even populated. At the point that the ListView gets instantiated, _list and therefore itemList will be undefined. This causes a problem with trying to dereference .dataSource.
The way around this is to make sure that DataExample.itemList is initialized with at least an empty instance of WinJS.Binding.List on startup. So putting this and the first bit together, we have this:
var _list = new WinJS.Binding.List();
var publicMembers =
{
itemList: _list.dataSource
};
With this, you can later replace _list with a different List instance, and the ListView will refresh itself.
This brings us to the third issue, populating the List with your HTTP response data. The WinJS.Binding.List takes an array in its constructor, not an object. You're passing the parsed JSON object straight from the HTTP request, which won't work.
Now if you have a WinJS.Binding.List instance already in _list as before, then you can just walk the object and add items directly to the List as follows:
var jm = json.return.markets;
for (var i in jm) {
_list.push(jm[i]);
}
Alternately, you could populate a separate array and then create a new List from that. In this case, however, you'll need to assign that new List.dataSource to the ListView in code:
var jm = json.return.markets;
var markets = [];
for (var i in jm) {
markets.push(jm[i]);
}
_list = new WinJS.Binding.List(markets);
var listview = document.getElementById("listView").winControl;
listview.itemDataSource = _list.dataSource;
Both ways will work (I tested them). Although the first solution is simpler and shorter, you'll need to make sure to clear out the List if you make another HTTP request and repopulate from that. With the second solution you just create a new List with each request and hand that to the ListView, which might work better depending on your particular needs.
Note also that in the second solution you can remove the itemDataSource option from the HTML altogether, and also eliminate the DataExample namespace and its variables because you'll assign the data source in code each time. Then you can also keep _list entirely local to the HTTP request.
Hope that helps. If you want to know more about ListView intricacies, see Chapter 7 of my free ebook from MSPress, Programming Windows Store Apps with HTML, CSS, and JavaScript, Second Edition.
Is this possible.. here's what I have atm, but my data object is just returning a load of jargon, what am I doing wrong? Am I doing anything.. right, for that matter?
I basically want to print out a list of a users videos (thumbnail and title, and make each one a clickable link to the video itself)
Thanks!
$(document).ready(function(){
$player.init();
})
var $player = (function(){
var player = {};
player.init = function(){
//init Youtube knockout
player.initYoutubeKnockout();
}
player.knockoutModel = {
videoData : ko.observableArray([]),
}
player.initYoutubeKnockout = function()
{
//load the Youtube json feed
$.ajax({
url: 'http://gdata.youtube.com/feeds/api/users/USERNAME/uploads?v=2&alt=json',
type: 'GET',
dataType: 'jsonp',
data: {
count: 5
},
success: function(data, textStatus, xhr) {
player.doYoutubeKnockout(data.item);
}
});
}
player.doYoutubeKnockout = function( data )
{
player.knockoutModel.videoData(data);
ko.applyBindings(player.knockoutModel, $('#youtube-feed')[0]);
console.log($(this));
}
return player;
})();
Frankly you weren't doing much at all.
The JSON data you get back from YouTube is not from data.item, it's in a completely different structure.
I'm assuming you wish to get 5 uploads from the user. The parameter name would be max-results, not count.
Probably the only thing you did fine was set up the url but that's about it.
You need to examine how the JSON returned looks like. Check the API reference for the structure of an atom feed. This is in XML but the corresponding JSON responses will have pretty much the same format with some minor differences. Examine the object by writing it to the console to verify you're getting the right properties.
Once you understand that, you need to use the correct query to get what you're expecting. Check out their API reference on their query parameters.
To help simplify your knockout code, I would strongly recommend you take the response you get back and map it to an object with simplified property names. For instance, to get the thumbnails for an entry, you would have to access the media$group.media$thumbnail array. It would be easier if you can just access it through thumbnail.
Also, if your elements you are binding to need to bind multiple values, it would help to map the values in such a way that your bindings are made easier. For instance, when using the attr binding, you'd set up a property for each of the attributes you want to add. Instead you could just group all the properties in an object and bind to that.
I wrote up a fiddle applying all that I said above to do as you had asked for. This should help give you an idea of what you can do and how to do it.
Demo
I'm struggeling with DOJO 1.8 and Datagrid. I would like to put a filteringSelect into a Datagrid cell. The widget should be fed by a Store. The store is fed by an AJAX request and works find. Also the select widget shows up, but it is empty. There's neither a value nor an option to see in the browser:
The Code for the Store:
// AJAX REQUEST TO GET PROJECTS AND SAVE AS STORE
require(['dojo/request', 'dojo/data/ItemFileReadStore'], function(request, ItemFileReadStore){
request('project/json/getprojects', {
handleAs: 'json'
}).then(function(json){
var projectStore = new ItemFileReadStore({data: {'identifier':'id', 'label':'label', 'items': json}});
});
The JSON I retrieve looks like this:
[{"id":2,"name":"Bilder-App","customer":"Company A","label":"Company A >> Bilder-App"},{"id":8,"name":"Zeiterfassung","customer":"Company B","label":"Company B >> Zeiterfassung"}]
The goal is that the select-box shows the "label" field visually and saves "id" to the store/grid.
Here's the code of the grid_layout for the cell:
{field: "project_id", name: "Kunde/Projekt", type: dojox.grid.cells._Widget, widgetClass: dijit.form.Select, widgetProps: {store: projectStore, searchAttr: "label"} },
Is anyone able to help me with that?
MANY THANKS!
AFX
Here is the working formatter:
// PROJECT-ID FORMATTER
function formatProjectId(value, index){
var item = projectStore.get(value);
var label = item['label'];
return label;
}
However, there's one slight problem: Right when I selected the item in the select box it shows the id in the field. When I leave the field it gets formatted correctly.
Does anyone know how to solve this?
OK!
I was able to find a solution.
First of all, I changed to Memory-Store, since I figured out that the ItemFileReadStore wasn't working correctly.
I read somewhere, that you need to require the 'dijit/form/FilteringSelect' specifically. So I did that.
So my field in the layout variable looks like this:
{field: "project_id", name: "Kunde/Projekt", type: dojox.grid.cells._Widget, widgetClass: dijit.form.FilteringSelect, widgetProps: {searchAttr: "id", labelAttr: "label", store: projectStore}},
My Store has an array of data consisting of the fields 'id' and 'label'...so it gave the field those attributes! And BOOOOM...it works!
Now I have to add a formatter-function to format the displayed IDs onces they were edited.
Posting about this soon!
Have a good one,
AFX
I am having a horrible time understanding Sencha Touch 2's architecture. I'm finding even the most basic things I do in other language and frameworks to be incredibly painful.
Currently, I just want to do a standard Master/Detail view. I load a store into a list view and would like to click on each list item to slide in a detail view. Since my initial list view can contain quite a lot of items, I'm only loading a little bit of the data with this method in my controller:
viewUserCommand: function(list, record) {
// console.log(record);
var profileStore = Ext.getStore("Profiles");
profileStore.setProxy({
url: 'http://localhost:8000/profile/' + record.data.user_id
});
profileStore.load();
// console.log(profileStore);
Ext.Viewport.animateActiveItem(Ext.getCmp('profileview'), this.slideLeftTransition);
}
First, modifying the url property for each tap event seems a bit hacky. Isn't there a way to specify "this.id" or something along those lines, and then pass that to my store? Or would that require loading the entire DB table into an object?
I can console.log the return from this method and it's exactly what I want. How do I populate the detail view? I've tried utilizing a DataView component, but it doesn't show any data. The examples on sencha's website are fairly sparse, and relatively contextless. That means that even copying and pasting their examples are likely to fail. (Any examples I've tried using Ext.modelMgr.getModel() have failed.)
I know it's partly that this framework is new and I'm probably missing a huge gaping hole in my understanding of it, but does anyone have any clue?
Would suggest you check out the docs, there's an example of loading a single model:
http://docs.sencha.com/touch/2-0/#!/api/Ext.data.Model
Ext.define('User', {
extend: 'Ext.data.Model',
config: {
fields: ['id', 'name', 'email'],
proxy: {
type: 'rest',
url : '/users'
}
}
});
//get a reference to the User model class
var User = Ext.ModelManager.getModel('User');
//Uses the configured RestProxy to make a GET request to /users/123
User.load(123, {
success: function(user) {
console.log(user.getId()); //logs 123
}
});