I simply want to use my own workflow for deleting a record from my grid. Is this not the proper way to do it via Javascript? The function below removes the row but refreshing the page shows the row was not actually deleted from the datasource and I do not see any requests sent in the network tab of Chrome. I should add that I am able to obtain a reference to the grid and the dataItem perfectly.
function delete(e) {
var $tr = $(e.currentTarget).closest("tr"),
grid = this,
dataItem = grid.dataItem($tr),
id = $tr.attr(kendo.attr("uid")),
model = grid.dataSource.getByUid(id);
e.preventDefault();
grid.dataSource.remove(model);
grid.dataSource.sync();
}
Edit - Here is how my datasource is defined:
$scope.contacts = new kendo.data.DataSource({
transport: {
read: {
url: apiUrl,
dataType: "json",
type: "GET"
},
update: {
url: apiUrl,
dataType: "json",
type: "POST"
},
destroy: {
url: apiUrl,
type: "DELETE"
},
create: {
url: apiUrl,
dataType: "json",
type: "POST"
}
},
pageSize: 10
});
I found something and I dont know if it works in your side.
I needed to add this line in my kendo.datasource
schema: {
model:{id:"id"}
}
and trigger like this
data_source_inspection.remove(selected.data);
data_source_inspection.sync();
this works for me.
Related
I am using a kendo multiselect widget for users to select different values pulled from the database via an ajax call. The ajax call takes one parameter, searchValue, which will narrow down the returned data. Here is my controller:
[HttpPost]
public JsonResult ProfitabilitySearch(string searchValue)
{
return Json(InventoryDataAccess.ProfitabilitySearch(searchValue));
}
1) How do you get the value from the text box to use as your searchValue? I commented the area in question below.
Here is my dataSource:
var searchDataSource = new kendo.data.DataSource({
transport: {
read: function () {
$.ajax({
type: 'POST',
url: Firm.ProfitabilitySearchURL,
contentType: 'application/json; charset=utf-8',
dataType: 'json',
//'SuperClient' is test data to see if it works, but what do i
//need to make searchValue = what I type?
data: JSON.stringify({ searchValue: 'SuperClient'}),
success: function (data) {
return data.RESULT;
}
});
}
},
group: { field: 'category' },
serverFiltering: true
});
And here is where I create the multiselect widget:
var TKSearch = $("#TKSearch").kendoMultiSelect({
dataSource: searchDataSource,
autoBind: false,
minLength: 3,
placeholder: 'Search Timekeepers...',
dataTextField: 'label',
dataTextValue: 'value',
delay: 200
}).data("kendoMultiSelect");
I'm not sure if this will help, but here is the structure of the json that is returned from the ajax call:
{"label":"SUNFLOWER REALTY CORP. (023932)","value":"023932","category":"RC"}
Solving the first question above may answer my second question so I will wait to ask that until after.
You can use functions for the request parameters.
var searchDataSource = new kendo.data.DataSource({
transport: {
read: function (options) {
$.ajax({
type: 'POST',
url: Firm.ProfitabilitySearchURL,
contentType: 'application/json; charset=utf-8',
data: {
searchValue: function () {
// better: use a model property instead of this
return $("#TKSearch").data('kendoMaskedTextBox').value();
}
},
success: function (data) {
options.success(data.RESULT);
}
});
}
},
group: { field: 'category' },
serverFiltering: true
});
Notes
This really should be a GET request. Use POST for requests that actually change data on the server and GET for requests that merely retrieve data from the server.
You do not have to JSON.stringify() yourself. jQuery does that transparently.
Specifying dataType is completely superfluous, jQuery will figure this out from the response headers.
Reading the input value via jQuery is not clean. Use the data-bound model property instead.
The callback invocation (options.success())
This sample lacks HTTP error handling, you must add that.
I have a Kendo UI DataSource that works when I use fetch(), but when I use the exact same configurtation with read() it fails. This is a problem as I need to retrieve data more than once and I can't do that with fetch().
Here is the DataSource code -
var FieldsDataSource = new kendo.data.DataSource({
transport: {
read: {
url: "../WebServiceAddress",
dataType: "json",
type: "POST",
contentType: 'application/json; charset=utf-8',
cache: false
},
parameterMap: function() {
return "{some mapping that has been confirmed to work}";
},
schema: {
data: function (data) {
if (data && data.d) {
//execution gets to here and stops
return data.d;
}
else {
return [];
}
},
}
});
Here is the code that calls the DataSource.read() function -
function loadFields() {
FieldsDataSource.read(function() {
var data = this.data();
if (data.length > 0) {
for (var i = 0; i < data.length; i++) {
var dataitem = data[i].Key;
$("#" + dataitem + "_field").prop("checked", data[i].Value);
}
}
});
}
If I change FieldsDataSource.read(function() to FieldsDataSource.fetch(function() everything works, but that doesn't make sense as I was under the improession that read and fetch do the same thing the difference being fetch only gets data once.
What I do know is that the data is being returned from the server, I can see it in fiddler - but the execution stops in the schema section where I flagged it in my code sample.
Apologies if I am asking a really obvious question, but I'm very new to Kendo.
have a look at the kendo demo site, this post explains how to read remote data quite nicely. I beleive the schema.data requires only string value. Configure your model and parse and then just call read(), your datasource.data collection will get populated and then you can play with it.
Also note that datasource.read() is async, thefore you populatefields method should be called from complete event of the datasource, not other way around. eg you might have no data in when populating.
transport: {
read: {
url: "../WebServiceAddress",
dataType: "json",
type: "POST",
contentType: 'application/json; charset=utf-8',
cache: false,
complete : function () { }
},
It can Read the remote database, it can Create new items locally, but they don't actually save to the remote database. This is what adds a new item:
function addNewItem(){
dataSource.add({id:"0", petName:"Dusty", petSpecies:"Dog", petGender:"M"});
dataSource.sync();
}
$('#addPet').bind('click', addNewItem);
This ajax POST call in that function instead of the dataSource stuff adds to my database perfectly:
var object = { id:"0", petName:"Dusty", petSpecies:"Dog", petGender:"M" };
$.ajax({
type: "POST",
url: 'website/petData',
headers: { "Authorization" : "Bearer ${AccessToken}" },
contentType: "application/json",
data: JSON.stringify(object)
})
Here is my datasource code. What do I need to change? I've tried doing sooooo many different things but no luck yet.
var dataSource = new kendo.data.DataSource({
type: "everlive",
transport: {
typeName: 'petData',
read: {
url: "website/petData",
dataType: "jsonp"
},
create: {
url: 'website/petData',
dataType: "jsonp"
}
},
group: "petSpecies",
schema: {
model: {
id: "id",
fields: {
id: { type: "number"},
petName: { type: "text" },
petSpecies: { type: "text" },
petGender: { type: "text" }
}
}
}
});
So thanks to giltnerj0 and Brett's comments, I was able to google the right words, and discovered that all I needed to do was change create's dataType:jsonp to json. I'm getting some POST errors now, but it's POSTing finally and saving things to my database.
create: {
url: 'website/petData',
dataType: "json"
}
Im experiencing a rather annoying bug (?) in Kendo UI Datasource.
My Update method on my transport is not getting called when I pass a custom function, but it does work if I just give it the URL.
This works:
...
transport: {
update: { url: "/My/Action" }
}
...
This does not
...
transport: {
update: function(options) {
var params = JSON.stringify({
pageId: pageId,
pageItem: options.data
});
alert("Update");
$.ajax({
url: "/My/Action",
data:params,
success:function(result) {
options.success($.isArray(result) ? result : [result]);
}
});
}
}
...
The function is not getting invoked, but an ajax request is made to the current page URL, and the model data is being posted, which is rather odd. Sounds like a bug to me.
The only reason I have a need for this, is because Kendo can't figure out that my update action returns only a single element, and not an array - so, since I dont want to bend my API just to satisfy Kendo, I though I'd do it the other way around.
Have anyone experienced this, and can point me in the right direction?
I also tried using the schema.parse, but that didn't get invoked when the Update method was being called.
I use myDs.sync() to sync my datasource.
Works as expected with the demo from the documentation:
var dataSource = new kendo.data.DataSource({
transport: {
read: function(options) {
$.ajax( {
url: "http://demos.kendoui.com/service/products",
dataType: "jsonp",
success: function(result) {
options.success(result);
}
});
},
update: function(options) {
alert(1);
// make JSONP request to http://demos.kendoui.com/service/products/update
$.ajax( {
url: "http://demos.kendoui.com/service/products/update",
dataType: "jsonp", // "jsonp" is required for cross-domain requests; use "json" for same-domain requests
// send the updated data items as the "models" service parameter encoded in JSON
data: {
models: kendo.stringify(options.data.models)
},
success: function(result) {
// notify the data source that the request succeeded
options.success(result);
},
error: function(result) {
// notify the data source that the request failed
options.error(result);
}
});
}
},
batch: true,
schema: {
model: { id: "ProductID" }
}
});
dataSource.fetch(function() {
var product = dataSource.at(0);
product.set("UnitPrice", product.UnitPrice + 1);
dataSource.sync();
});
Here is a live demo: http://jsbin.com/omomes/1/edit
I am using ASP.NET MVC3 with EF Code First. I have not worked previously with jQuery. I would like to add autocomplete capability to a dropdownlist that is bound to my model. The dropdownlist stores the ID, and displays the value.
So, how do I wire up the jQuery UI auto complete widget to display the value as the user is typing but store the ID?
I will need multiple auto complete dropdowns in one view too.
I saw this plugin: http://harvesthq.github.com/chosen/ but I am not sure I want to add more "stuff" to my project. Is there a way to do this with jQuery UI?
Update
I just posted a sample project showcasing the jQueryUI autocomplete on a textbox at GitHub
https://github.com/alfalfastrange/jQueryAutocompleteSample
I use it with regular MVC TextBox like
#Html.TextBoxFor(model => model.MainBranch, new {id = "SearchField", #class = "ui-widget TextField_220" })
Here's a clip of my Ajax call
It initially checks its internal cached for the item being searched for, if not found it fires off the Ajax request to my controller action to retrieve matching records
$("#SearchField").autocomplete({
source: function (request, response) {
var term = request.term;
if (term in entityCache) {
response(entityCache[term]);
return;
}
if (entitiesXhr != null) {
entitiesXhr.abort();
}
$.ajax({
url: actionUrl,
data: request,
type: "GET",
contentType: "application/json; charset=utf-8",
timeout: 10000,
dataType: "json",
success: function (data) {
entityCache[term] = term;
response($.map(data, function (item) {
return { label: item.SchoolName, value: item.EntityName, id: item.EntityID, code: item.EntityCode };
}));
}
});
},
minLength: 3,
select: function (event, result) {
var id = result.item.id;
var code = result.item.code;
getEntityXhr(id, code);
}
});
This isn't all the code but you should be able to see here how the cache is search, and then the Ajax call is made, and then what is done with the response. I have a select section so I can do something with the selected value
This is what I did FWIW.
$(document).ready(function () {
$('#CustomerByName').autocomplete(
{
source: function (request, response) {
$.ajax(
{
url: "/Cases/FindByName", type: "GET", dataType: "json",
data: { searchText: request.term, maxResults: 10 },
contentType: "application/json; charset=utf-8",
success: function (data) {
response($.map(data, function (item) {
return {
label: item.CustomerName,
value: item.CustomerName,
id: item.CustomerID
}
})
);
},
});
},
select: function (event, ui) {
$('#CustomerID').val(ui.item.id);
},
minLength: 1
});
});
Works great!
I have seen this issue many times. You can see some of my code that works this out at cascading dropdown loses select items after post
also this link maybe helpful - http://geekswithblogs.net/ranganh/archive/2011/06/14/cascading-dropdownlist-in-asp.net-mvc-3-using-jquery.aspx