More object oriented development with Page Type Builder

More object oriented development with Page Type Builder
-or how to have a little more fun at work

Agenda
Problems with the standard EPiSevermodel
How Page TypeBuildersolves the problems
How to use Page TypeBuilder
Questions

The EPiServer Model
PageType
Is, sort of, an
instance of
Decideswhich
template to use
PageData
Page (.ASPX)
Renderscontent from

Deardiary, today I…
…created Page Types

…addedproperties

…addedmarkup to display properties

…wrotesomecode

…did a release

A few problems
Wespend a lot of time not writingcode
Wedefine ”templates” for objects in a webbased UI
There’s no inheritancebetween page types
Synchronizing different environments is a pain
ObjectOrientation?
Weuse a lot of ”magic strings”
Weplacelogic in the presentation layer that doesn’tnecessarilybelongthere
WedistinguishPageDataobjects by the ID of their Page Type

Whatif…
Article
Decideswhich
template to use
Actually is an instance of
ArticlePage
Page<Article> (.ASPX)
Renderscontent from,
knowing the type

Page TypeBuilder
An opensourceproject
Creates and updates page typesbased on classes
Ensures that DataFactoryreturnsinstances of your classes

By using Page TypeBuilderwe get
Less switchingbetween Visual Studio and Admin
Inheritancebetween page types
Stronglytyped access to properties
The ability to placelogic in pages
Polymorphism
Faster and easier releases
Bettertestability

Getting started
Download from pagetypebuilder.codeplex.com
ReferencePageTypeBuilder.dll
CopyCastle.Core.dll and Castle.DynamicProxy2.dll to your bin folder

Creating a page type
usingPageTypeBuilder;
namespaceMySite.PageTypes
{
[PageType]
public classArticle : TypedPageData
{
}
}

Specifying settings
[PageType(
Filename ="/Templates/Article.aspx”,
DefaultChildSortOrder =FilterSortOrder.Index)]
{
}

Addingproperties
[PageType]
{
[PageTypeProperty]
public virtual stringMainBody { get; set; }
}

Specifyingproperty settings
[PageType]
{
[PageTypeProperty(
EditCaption ="Main body",
HelpText = "Will be shown in the main content area of the page",
Type = typeof(PropertyXhtmlString))]
public virtual stringMainBody { get; set; }
}

Creating a template
usingPageTypeBuilder.UI;
namespaceMySite.Templates
{
public partialclassArticle : TemplatePage<PageTypes.Article>
{
}
}

Creating a template
<%@ PageLanguage="C#"CodeBehind="Article.aspx.cs"
Inherits="MySite.Templates.Article"
MasterPageFile="~/Templates/MasterPages/MasterPage.master"%>
<asp:ContentContentPlaceHolderID="MainBodyRegion"runat="server">
<%= CurrentPage.MainBody%>
</asp:Content>

Addlogic to properties
[PageTypeProperty(Type = typeof(PropertyString))]
public string Heading
{
get
{
string heading=
this.GetPropertyValue(page => page.Heading);
if (!string.IsNullOrEmpty(heading))
return heading;
return PageName;
}
}

Addingmethods to page types
[PageType]
{
publicIEnumerable<Comment> GetComments()
{
return
DataFactory.Instance.GetChildren(PageLink)
.OfType<Comment>();
}
}

DependencyInjection
[PageType]
{
privateIPageSourcedataFactory;
public Article(IPageSourcedataFactory)
{
this.dataFactory = dataFactory;
}
publicIEnumerable<Comment> GetComments()
{
returndataFactory.GetChildren(PageLink)
.OfType<Comment>();
}
}

Where to learnmore
pagetypebuilder.codeplex.com
Links to tutorials
Links to 40+ blog posts

Thank you!
Questions?
http://joelabrahamsson.com
@joelabrahamsson
joel.abrahamsson@valtech.se
Photographs from
http://draken413o.deviantart.com/art/To-the-rescue-121441303
and
http://theinfluentials.wordpress.com/category/consumer-behaviour/

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More object oriented development with Page Type Builder

by joelabrahamsson on Jun 03, 2010

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