Last Row Warning Message Issue In Kendo Grid

Gowtham K
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Introduction

Usually, while using validation in Kendo Grid, you will find some design issues in the Grid when displaying the warning/error message. This blog will tell you how to fix this issue..

Kendo Grid with validation

I will implement the Kendo Grid by referring http://demos.telerik.com/kendo-ui/grid/editing

KendoGrid.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled</title>
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2017.1.118/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2017.1.118/styles/kendo.rtl.min.css">
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2017.1.118/styles/kendo.default.min.css">
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2017.1.118/styles/kendo.mobile.all.min.css">
<script src="http://code.jquery.com/jquery-1.12.3.min.js"></script>
<script src="http://kendo.cdn.telerik.com/2017.1.118/js/angular.min.js"></script>
<script src="http://kendo.cdn.telerik.com/2017.1.118/js/jszip.min.js"></script>
<script src="http://kendo.cdn.telerik.com/2017.1.118/js/kendo.all.min.js"></script></head>
<body>
<div id="example">
<div id="grid"></div>
<script>
$(document).ready(function () {
var crudServiceBaseUrl = "https://demos.telerik.com/kendo-ui/service",
dataSource = new kendo.data.DataSource({
transport: {
read: {
url: crudServiceBaseUrl + "/Products",
dataType: "jsonp"
},
update: {
url: crudServiceBaseUrl + "/Products/Update",
dataType: "jsonp"
},
destroy: {
url: crudServiceBaseUrl + "/Products/Destroy",
dataType: "jsonp"
},
create: {
url: crudServiceBaseUrl + "/Products/Create",
dataType: "jsonp"
},
parameterMap: function(options, operation) {
if (operation !== "read" && options.models) {
return {models: kendo.stringify(options.models)};
}
}
},
batch: true,
pageSize: 20,
schema: {
model: {
id: "ProductID",
fields: {
ProductID: { editable: false, nullable: true },
ProductName: { validation: { required: true } },
UnitPrice: { type: "number", validation: { required: true, min: 1} },
Discontinued: { type: "boolean" },
UnitsInStock: { type: "number", validation: { min: 0, required: true } }
}
}
}
});
$("#grid").kendoGrid({
dataSource: dataSource,
navigatable: true,
pageable: true,
height: 550,
toolbar: ["create", "save", "cancel"],
columns: [
"ProductName",
{ field: "UnitPrice", title: "Unit Price", format: "{0:c}", width: 120 },
{ field: "UnitsInStock", title: "Units In Stock", width: 120 },
{ field: "Discontinued", width: 120 },
{ command: "destroy", title: " ", width: 150 }],
editable: true
});
});
</script>
</div>
</body>
</html>

Result in browser

From the above figure, you can notice there is a break in error message. In the last row of Grid, the user needs to scroll down manually to check the error message. This is somewhat odd from a user's perspective. Let’s see how to fix it with simple logic which is written in the below function.

$(function () {
var grid = $("#grid").data("kendoGrid");
grid.table.on("focusout", ".k-invalid", function () {
var content = grid.content;
var height = content.height();
var cell = $(this).closest("td");
var message = cell.find(".k-invalid-msg");
var callout = message.find(".k-callout");
var position = message.position();
var top = position.top + callout.outerHeight() + message.outerHeight();
if (top > height) {
content.scrollTop(content.scrollTop() + top - height);
}
});
});

Complete code

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled</title>
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2017.1.118/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2017.1.118/styles/kendo.rtl.min.css">
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2017.1.118/styles/kendo.default.min.css">
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2017.1.118/styles/kendo.mobile.all.min.css">
<script src="http://code.jquery.com/jquery-1.12.3.min.js"></script>
<script src="http://kendo.cdn.telerik.com/2017.1.118/js/angular.min.js"></script>
<script src="http://kendo.cdn.telerik.com/2017.1.118/js/jszip.min.js"></script>
<script src="http://kendo.cdn.telerik.com/2017.1.118/js/kendo.all.min.js"></script></head>
<body>
<div id="example">
<div id="grid"></div>
<script>
$(document).ready(function () {
$(function () {
var grid = $("#grid").data("kendoGrid");
grid.table.on("focusout", ".k-invalid", function () {
var content = grid.content;
var height = content.height();
var cell = $(this).closest("td");
var message = cell.find(".k-invalid-msg");
var callout = message.find(".k-callout");
var position = message.position();
var top = position.top + callout.outerHeight() + message.outerHeight();
if (top > height) {
content.scrollTop(content.scrollTop() + top - height);
}
});
});
var crudServiceBaseUrl = "https://demos.telerik.com/kendo-ui/service",
dataSource = new kendo.data.DataSource({
transport: {
read: {
url: crudServiceBaseUrl + "/Products",
dataType: "jsonp"
},
update: {
url: crudServiceBaseUrl + "/Products/Update",
dataType: "jsonp"
},
destroy: {
url: crudServiceBaseUrl + "/Products/Destroy",
dataType: "jsonp"
},
create: {
url: crudServiceBaseUrl + "/Products/Create",
dataType: "jsonp"
},
parameterMap: function(options, operation) {
if (operation !== "read" && options.models) {
return {models: kendo.stringify(options.models)};
}
}
},
batch: true,
pageSize: 20,
schema: {
model: {
id: "ProductID",
fields: {
ProductID: { editable: false, nullable: true },
ProductName: { validation: { required: true } },
UnitPrice: { type: "number", validation: { required: true, min: 1} },
Discontinued: { type: "boolean" },
UnitsInStock: { type: "number", validation: { min: 0, required: true } }
}
}
}
});
$("#grid").kendoGrid({
dataSource: dataSource,
navigatable: true,
pageable: true,
height: 550,
toolbar: ["create", "save", "cancel"],
columns: [
"ProductName",
{ field: "UnitPrice", title: "Unit Price", format: "{0:c}", width: 120 },
{ field: "UnitsInStock", title: "Units In Stock", width: 120 },
{ field: "Discontinued", width: 120 },
{ command: "destroy", title: " ", width: 150 }],
editable: true
});
});
</script>
</div>
</body>
</html>