Multiple columns in popup edit mode - asp.net-mvc

Question

I think the popup edit mode is the nicest of the edit modes, but with a larger model the popup becomes very long which doesn't look nice.
I've found a solution for this and I'm curious on your ideas/feedback/enhancements for this solution.
I created two custom attributes:
public class NumberOfColumnsAttribute : Attribute, IMetadataAware
{
private readonly int _numberOfColumns;
public NumberOfColumnsAttribute(int numberOfColumns)
{
_numberOfColumns = numberOfColumns;
}
public void OnMetadataCreated(ModelMetadata metadata)
{
if (!metadata.AdditionalValues.ContainsKey("NumberOfColumns"))
{
metadata.AdditionalValues.Add("NumberOfColumns", _numberOfColumns);
}
}
}
public class ShowInColumnAttribute : Attribute, IMetadataAware
{
private readonly int _column;
public ShowInColumnAttribute(int column)
{
_column = column;
}
public void OnMetadataCreated(ModelMetadata metadata)
{
if (!metadata.AdditionalValues.ContainsKey("ShowInColumn"))
{
metadata.AdditionalValues.Add("ShowInColumn", _column);
}
}
}
Then use the [NumberOfColumns(m)] attribute above your edit model and use the [ShowInColumn(n)] attribute above a property (n=1 is assumed when no attribute is applied).
I created a Object.cshtml file in Views/Shared/EditorModels/ as follows.
#if (ViewData.TemplateInfo.TemplateDepth > 1)
{
#ViewData.ModelMetadata.SimpleDisplayText
} else {
for (var i = 1; i <= (int)(!ViewData.ModelMetadata.AdditionalValues.ContainsKey("NumberOfColumns") ? 1 : ViewData.ModelMetadata.AdditionalValues["NumberOfColumns"]);i++)
{
<div class="editor-column">
#foreach (var prop in ViewData.ModelMetadata.Properties.Where(pm => pm.ShowForEdit && !ViewData.TemplateInfo.Visited(pm) && ((int)(!pm.AdditionalValues.ContainsKey("ShowInColumn") ? 1 : pm.AdditionalValues["ShowInColumn"])) == i))
{
if (prop.HideSurroundingHtml) {
#Html.Editor(prop.PropertyName)
} else {
<div class="editor-label">
#Html.Label(prop.PropertyName)
#(prop.IsRequired ? "*" : "")
</div>
<div class="editor-field">
#Html.Editor(prop.PropertyName)
#Html.ValidationMessage(prop.PropertyName, "*")
</div>
}
}
</div>
}
<div class="editor-seperator"></div>
}
And the following lines of CSS:
.k-edit-form-container {
width: auto;
}
.editor-column {
width: 400px;
float: left;
}
.editor-seperator {
clear: both;
}
What do you think?

Answer 1

I think, this would be much simpler. Please run this script on wide screen.
var crudServiceBaseUrl = "//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,
pageable: true,
height: 550,
toolbar: ["create"],
columns: [
{ field:"ProductName", title: "Product Name" },
{ field: "UnitPrice", title:"Unit Price", format: "{0:c}", width: "120px" },
{ field: "UnitsInStock", title:"Units In Stock", width: "120px" },
{ field: "Discontinued", width: "120px" },
{ command: ["edit", "destroy"], title: " ", width: "250px" }],
editable: "popup",
edit: fnMultipleLayoutForm
});
function fnMultipleLayoutForm(){
$(".k-edit-form-container").prepend('<div class="column1" style="display: inline-block; float: left;padding-right:30px"></div><div class="column2" style="display: inline-block;float: left;padding-right:30px;"></div>');
$(".k-edit-form-container").children(".k-edit-label, .k-edit-field").slice(0, parseInt($(".k-edit-form-container").children(".k-edit-label, .k-edit-field").length / 2)).appendTo(".column1");
$(".k-edit-form-container").children(".k-edit-label, .k-edit-field").appendTo(".column2");
$(".k-edit-form-container").css("width", "auto");
$('.k-window').css({ top: '50%', left: '50%', margin: '-' + ($('.k-window').height() / 2) + 'px 0 0 -' + ($('.k-window').width() / 2) + 'px' });
};
<script src="//kendo.cdn.telerik.com/2015.3.1111/js/jquery.min.js"></script>
<script src="//kendo.cdn.telerik.com/2015.3.1111/js/kendo.all.min.js"></script>
<link rel="stylesheet" href="//kendo.cdn.telerik.com/2015.3.1111/styles/kendo.common.min.css" />
<link rel="stylesheet" href="//kendo.cdn.telerik.com/2015.3.1111/styles/kendo.default.min.css" />
<div id="grid"></div>