Develop Reference

Mvc Ajax post from check-boxes in partial view

I have a partial view which is used to show a checkbox in a column of table in razor. When I click on any checkbox in the table its posting back to controller with Id of first row and not the Id of row in which the check-box is contained. The javascript function to post ajax request is "SaveChanges" as given below.
The hidden field "RecurrenceScheduleId" is the primary key id.
Am I doing something wrong here?
- Following are my view & controller action:
#model SMRDS.Model.RecurrenceSchedule
#using (Ajax.BeginForm("_LogOccurancePartial", "Schedule",
new AjaxOptions
{
UpdateTargetId = "tdOccurance",
HttpMethod = "post",
LoadingElementId = "btnProgress",
OnBegin = "dialogBegin",
OnSuccess = "updateSuccess",
OnFailure = "dialogFailure"
},
new { id = "frm-toggle" }))
{
#Html.HiddenFor(model => model.RecurrenceScheduleId)
#Html.CheckBoxFor(m => m.LogOccurences, new { #onclick ="SaveChanges(this)" })
}
<script>
function updateSuccess() {}
function dialogFailure() {}
function dialogComplete() {}
function dialogBegin() {}
function SaveChanges(checkboxInput) {
$.ajax({
type: 'POST',
url: '/Schedule/_LogOccurancePartial',
data: { newValue: checkboxInput.checked, id: $("#RecurrenceScheduleId").val() },
dataType: 'json',
success: function (response) {
//handle success
}
});
}
Controller Action :
public JsonResult _LogOccurancePartial(bool newValue,int id)
{
var result = BLL.Service.RecurrenceSchedules.UpdateLogOccurence(id, newValue);
return Json(new { result = result }, JsonRequestBehavior.AllowGet);
}
Update
Following is the html rendered for hidden fields. At present I have only two rows with Ids "40" & "41".
<input data-val="true" id="RecurrenceScheduleId"
name="RecurrenceScheduleId" type="hidden" value="40">
<input data-val="true" id="RecurrenceScheduleId"
name="RecurrenceScheduleId" type="hidden" value="41">

It is your responsibility to maintain unique ids when you use the helpers.
If you had a model
public class ViewModel
{
public int Id { get; set; }
public string Name { get; set; }
}
And your view contains a collection you can use a for loop with an index to override the id with unique values.
#model List<ViewModel>
#for(int i = 0; i < Model.Count(); i++)
{
#Html.HiddenFor(m => Model[i].Id, htmlAttributes: new { id = "item" + item.Id })
}
But you can also adjust your click handler so you don't need to find a hidden input by id.
#Html.CheckBoxFor(m => m.LogOccurences,
new { #class="trigger", data_rsid=m.RecurrenceScheduleId })
<script>
$("body").on("click", ".trigger", function(e) {
var rsId = $(this).data("rsid");
var checked = $(this).prop("checked");
var data = { newValue: checked, id: rsId }
$.ajax({ ... });
});
</script>

How to implement search with two terms for a collection?

So, currently I have a collection of items where I want the user to be able to search using the name and some random text from the collection.
Here's what I have done so far:
public IEnumerable<Item> items = new[]
{
new Item { ItemId = 1, ItemName = "Apple", ItemDescription = "crispy, sweet", ItemPairing = "Walnut"},
new Item { ItemId = 2, ItemName = "Pear", ItemDescription = "slightly tart", ItemPairing = "Cheese"},
new Item { ItemId = 3, ItemName = "Banana", ItemDescription = "good source of potassium", ItemPairing = "Honey" },
new Item { ItemId = 4, ItemName = "Chocolate", ItemDescription = "Sweet and rich melting flavor", ItemPairing = "Wine"}
};
public ActionResult Index()
{
return View("Index");
}
public ActionResult Search(string search)
{
return View("Index", items.Where(n => n.ItemName.StartsWith(search)));
}
Here's the search part on the view:
<p>
<b>Search for Name:</b>
#Html.TextBox("ItemName", "", new { #class = "form-control" })
<b>Search for Text:</b>
#Html.TextBox("ItemText", "", new { #class = "form-control" })
<input id="search" type="submit" value="Search" onclick="search(ItemName,ItemText)" />
</p>
<script>
function search(ItemName, ItemText) {
$("search").click(function () {
$.ajax({
type: "POST",
url: "/Items/Search",
data: {ItemName, ItemText},
datatype: "html",
success: function (data) {
$('#result').html(data);
}
});
});
}
</script>
So that it can look something like this:
I want it so that when the user types in Apple for Name and Crispy for text, they can find the Apple item from my collection. I also want it so that if they type in either Name or Text, it will still return a matched item.
I'm not sure how to do that.

Remove the onclick attribute from the submit button and change it to
<button type="button" id="search">Search</button>
and change the script to
var url = '#Url.Action("Search", "Items")';
$("#search").click(function () {
$.post(url, { ItemName: $('#ItemName').val(), ItemText: $('#ItemText').val() }, function(data) {
$('#result').html(data);
});
})
Note you may want to consider making it $.get() rather than $.post()
and change the controller method to accept the inputs from both textboxes
public PartialViewResult Search(string itemName, string itemText)
{
var items = ??
// filter the data (adjust to suit your needs)
if (itemName != null)
{
items = items.Where(x => x.ItemName.ToUpperInveriant().Contains(itemName.ToUpperInveriant())
}
if (itemText != null)
{
items = items.Where(x => x.ItemDescription.ToUpperInveriant().Contains(itemText.ToUpperInveriant())
}
// query you data
return PartialView("_Search", items);
}
Side note: Its not clear what the logic for search is - i.e. if you enter search text in both textboxes, do you want an and or an or search
Assuming the view in the view in the question is Index.cshtml, then it will include the following html
<div id="result">
#Html.Action("Search") // assumes you want to initially display all items
</div>
and the _Search.cshtml partial would be something like
#model IEnumerable<Item>
#foreach (var item in Model)
{
// html to display the item properties
}

While CStrouble's answer will work, if you're into AJAX calls and want to sort this in a single page, you might consider using AJAX and JQuery calls.
With AJAX & JQuery:
var search = function(itemName, itemText) {
//note that if you want RESTful link, you'll have to edit the Routing config file.
$ajax.get('/controller/action/itemName/itemText/', function(res) {
//do stuff with results... for instance:
res.forEach(function(element) {
$('#someElement').append(element);
});
});
};
And the action:
public JsonResult SearchAction(itemName, itemText) {
List<Item> newItems = items.Where(x => x.ItemName.ToUpperInveriant().Contains(itemName.ToUpperInveriant())
|| x.ItemDescription.ToUpperInveriant().Contains(itemText.ToUpperInveriant())
|| x.ItemPairing.ToUpperInveriant().Contains(itemText.ToUpperInveriant()));
return Json.Encode(newItems.ToArray());
}
Note that I'm not home, so there might be some syntax errors.
Alright, so say I want to return a partial, instead of a simple array:
first, change the action to:
public ActionResult SearchAction(itemName, itemText) {
List<Item> newItems = items.Where(x => x.ItemName.ToUpperInveriant().Contains(itemName.ToUpperInveriant())
|| x.ItemDescription.ToUpperInveriant().Contains(itemText.ToUpperInveriant())
|| x.ItemPairing.ToUpperInveriant().Contains(itemText.ToUpperInveriant()));
return PartialView("~/Views/Partials/MyPartialView.cshtml", newItems);
}
And you create a partial view in the directory you specified, taking the model that you transferred (newItems)
#model IEnumerable<Path.to.Item>
<h3>Results</h3>
<ul>
#foreach(var item in model)
{
<li>#item.Name - #item.Description</li>
}
</ul>
and now when you receive the jquery response:
$.ajax({
type: "POST",
url: "/Items/Search",
data: {ItemName, ItemText},
datatype: "html",
success: function (data) {
$('#result').html(data);
}
});
//since data is the HTML partial itself.
//if you have firebug for Mozilla firefox, you can see what I'm
//talking about

You may want to consider converting both strings to upper or lower, depending on your search requirements. The below code assumes the search is case-insensitive.
public ActionResult Search(string search)
{
string upperSearch = search.ToUpperInvariant();
return View("Index", items.Where(n =>
n.ItemName.ToUpperInvariant().StartsWith(search) ||
n.ItemDescription.ToUpperInvariant().Contains(search)));
}
with the Or condition it will match if either the text or the name matches. If they match different items (like Apple and Tart), you may need to consider what happens in that use-case, but in this case it will return both Apple and Pear.

cannot call json result using jquery

c# and jquery,
I have two drop-down lists(category and product), and have to change the product list based on the category.
#Html.DropDownList("categoryId", new SelectList(ViewBag.Category, "Id", "Name"), "Select Parent Category", new { #class = "form-control categorydata" })
#Html.DropDownList("productId", new SelectList(ViewBag.Product, "Id", "Name"), "Select Product", new { #class = "form-control product-list" })
And i am writing the following controller for getting the products list.It is worked.
[HttpGet]
public JsonResult GetProducts(int categoryId)
{
int tot = new Products().Total;
int cont = 1;
Category cat = new Category(2);
var products = new Products(cont, tot, cat);
// ViewBag.products = new Products(1,new Products().Total,new Category(categoryId));
return Json(products);
}
and my jquery is,
$('.categorydata').change(function () {
var selCat = $(".categorydata").val();
var url = "~/Add/GetProducts";
if (selCat.length != 0) {
$.get(url, { id: SelCat }, function (data) {
alert(data);
});
}
});
This jquery is didn't call the controller, and it can not get the data .
Please help me to solve it.

You should keep the property name in json data as same as the parameter name of the action method.
$.get(url, { categoryId : SelCat }, function (data) {
Refer the SO Post.

You should use this.
return Json(products,System.Web.Mvc.JsonRequestBehavior.AllowGet);

Try to put dataType: 'json' in you ajax call:

Get selected value of Kendo grid on another View

So yesterday I started learning javascript and web development for a project at work. We are using a MVC pattern and I am having issues figuring out exactly how the javascript classes work with the views. Any help on this will be appreciated. Like I said, my knowledge is very limited. I do, however, know C# and WPF (MVVM) so maybe some of that knowledge will help me here.
We use Kendo controls. Some of the javascript for our kendo grid is below.
grid.js:
function onChange(e) {
//get currently selected dataItem
var grid = e.sender;
var selectedRow = grid.select();
var dataItem = grid.dataItem(selectedRow);
var y = $.ajax({
url: "/api/ServiceOrderData/" + dataItem.id,
type: 'GET',
dataType: 'json'
});
}
$("#serviceOrderList").kendoGrid({
groupable: true,
scrollable: true,
change: onChange,
sortable: true,
selectable: "row",
resizable: true,
pageable: true,
height: 420,
columns: [
{ field: 'PriorityCodeName', title: ' ', width: 50 },
{ field: 'ServiceOrderNumber', title: 'SO#' },
{ field: 'ServiceOrderTypeName', title: 'Type' },
{ field: 'ScheduledDate', title: 'Scheduled Date' },
{ field: 'StreetNumber', title: 'ST#', width: '11%' },
{ field: 'StreetName', title: 'Street Name' },
{ field: 'City', title: 'City' },
{ field: 'State', title: 'ST.' },
{ field: 'IsClaimed', title: 'Claimed'}
],
dataSource: serviceOrderListDataSource
});
I am wanting to be able to use the value from the onChange function:
var dataItem = grid.dataItem(selectedRow);
in the following view.
ESRIMapView.cshtml:
<body class="claro">
<div id="mainWindow" data-dojo-type="dijit/layout/BorderContainer"
data-dojo-props="design:'sidebar', gutters:false"
style="width:100%; height:100%;">
<div id="leftPane"
data-dojo-type="dijit/layout/ContentPane"
data-dojo-props="region:'left'">
<br>
<textarea type="text" id="address" />*THIS IS WHERE I WILL USE dataItem! dataItem.StreetNumber (syntax?) to be exact</textArea>
<br>
<button id="locate" data-dojo-type="dijit/form/Button">Locate</button>
</div>
<div id="map"
data-dojo-type="dijit/layout/ContentPane"
data-dojo-props="region:'center'">
</div>
</div>
</body>
Right now my ESRIMapView is loaded when the user clicks on a button on the index.cshtml screen which contains the grid that I am trying to get the value from.
<li>#Html.ActionLink("Map", "ESRIMapView", "Home", null, new { #class = "k-button" })</li>
This is my "Home" controller:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;
using System.Web.Mvc;
using System.Web.Services.Description;
using Alliance.MFS.Data.Client.Models;
using Alliance.MFS.Data.Local.Repositories;
namespace AllianceMobileWeb.Controllers
{
public class HomeController : Controller
{
public ActionResult Index()
{
ViewBag.Message = "Welcome to ASP.NET MVC!";
return View();
}
public ActionResult About()
{
ViewBag.Message = "Your app description page.";
return View();
}
public ActionResult ServiceOrderMaintenance()
{
ViewBag.Message = "Your contact page.";
return View();
}
public ActionResult ESRIMapView()
{
ViewBag.Message = "Your contact page.";
return View();
}
}
}
I realize this is probably a very elementary question, but any help would be appreciate. And please be as detailed as possible with your responses :)

Since you create your link before returning the (initial) view to the user, you need a bit of trickery to change it. I recommend the following: set an id on your a element and change its href attribute; on your controller, set a parameter corresponding to the street number and pre-fill the view:
Controller:
public ActionResult ESRIMapView(string streetNumber)
{
ViewBag.Message = "Your contact page.";
ViewBag.StreetNumber = streetNumber;
return View();
}
View containing the li (note the Id on the a element):
<li>#Html.ActionLink("Map", "ESRIMapView", "Home", null, new { #class = "k-button", id="myMapaction" })</li>
View containing the textarea (ESRIMapView ):
<textarea type="text" id="address" />#ViewBag.StreetNumber</textArea>
grid.js:
function onChange(e) {
//get currently selected dataItem
var grid = e.sender;
var selectedRow = grid.select();
var dataItem = grid.dataItem(selectedRow);
//change the link
var actionElem = $("#myMapaction");
var url = actionElem.attr("href");
if (url.indexOf("=") === -1) { //first time selecting a row
url += "?streetNumber=" + dataItem.StreetNumber;
} else {
url = url.substring(0, url.lastIndexOf("=") +1) + dataItem.StreetNumber;
}
actionElem.attr("href", url);
//change the link
var y = $.ajax({
url: "/api/ServiceOrderData/" + dataItem.id,
type: 'GET',
dataType: 'json'
});
}
This script simply adds the street number parameter in the query string. When the user selects a row for the first time, the streetNumber parameter is not present in the query string. After the first time, the parameter is there and we must change only the value.
Please note that this solution has its limitations: it does not work if you have other parameters in the query string (the logic for adding/editing the parameter must be changed).

Java Script passing value using MVC4

My Create view was like this:
#model ContactProject.Models.Activity.Activity
#{
ViewBag.Title = "Create";
IEnumerable<ContactProject.Models.Activity.Activity> activities = ViewBag.Activities;
}
<div class="editor-label">
#Html.Label("Project")
</div>
<div class="editor-field">
#Html.DropDownList("Projects", ViewBag.Project as SelectList,"----Project----", new { id = "ProjectsID" })
#Html.ValidationMessageFor(model => model.iProjectID)
</div>
<div class="editor-label">
#Html.Label("Title")
</div>
<div class="editor-field" id="TitlesDivID">
<select id="TitlesID" name="Titles"></select>
</div>
// other codes...
if (activities !=null){
// Display activities.
}
here is the code of my JS
$('#ProjectsID').change(function () {
var URL = 'TitleList';
$.getJSON(URL + '/' + $('#ProjectsID').val(), function (data) {
var items = '<option>Select a Title</option>';
$.each(data, function (i, title) {
items += "<option value='" + title.Value + "'>" + title.Text + "</option>";
if (items != null)
{
var addValue = $('#ProjectsID').val();
$.ajax
({
type: "POST",
url: "/Activity/getCreateActivities",
data: { projectID: addValue },
success: function (#ViewBag.Activities) {
}
})
}
})
basically I want to implement my function with this JS to display not only of title related to the project but also all the activities has the same project name.
That's why I'm writing "success: function (#ViewBag.Activities) in my jquery call back function."
here is the method in my controller:
public ActionResult getCreateActivities(string projectID)
{
int iProjectID = Int32.Parse(projectID);
ViewBag.Project = GetProjects();
var Activities = (from a in db.Activities
where a.iProjectID == iProjectID
select a).ToList();
ViewBag.Activities = Activities;
return View("Create");
}
but when I am using breakpoint to debug, there are #ViewBag.Activities returned with value and counts, but seems like didn't display on my screen, anyone has any thoughts on that? any contribute will be greatly appreciated.
Update:
<table>
#foreach (var item in Activities) {
<tr>
<td>
#Html.DisplayFor(modelItem => item.ProjectID)
</td>
<td>
#Html.DisplayFor(modelItem => item.Project.ProjectName)
</td>
</tr>

If you set some values in ViewBag with an ajax request, you won't get it. The rite way to handle this is, simply return the data in JSON format and access it.
public ActionResult getCreateActivities(string projectID)
{
int iProjectID = Int32.Parse(projectID);
var Activities = (from a in db.Activities
where a.iProjectID == iProjectID
select a).ToList();
return Json(new { Projects : GetProjects(),
Activities : Activities } ,JsonRequestBehaviour.AllowGet);
}
The above will return a JSON representation of an anonymous object like this
{
"Projects": [ { "Id": 2 } ],
"Activities": [ { "id": 113,"Name": "My name" } ]
}
And in your ajax method's success callback, access it like
success(function(data){
// now you can acceess data.Projects and data.Activities
}