How to create a CustomField for News?

Posted by Community Admin on 13-Apr-2011 00:00

I am trying the following:

using Telerik.Sitefinity.Configuration;

using Telerik.Sitefinity.Web.UI;

using Telerik.Sitefinity.Web.UI.Fields.Config;

using Telerik.Sitefinity.Web.UI.Fields.Definitions;

namespace QUAY.Sitefinity.Modules

public class ThumbFieldElementDefinition : TextFieldDefinition

public ThumbFieldElementDefinition() : base()

public ThumbFieldElementDefinition(ConfigElement element) : base(element)

public class ThumbFieldElement : TextFieldDefinitionElement

public ThumbFieldElement(ConfigElement parent) : base(parent)

public override DefinitionBase GetDefinition()

return new ThumbFieldElementDefinition(this);

And my control (CustomControl is a class that inhehits from CompositeControl)

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Web.UI.WebControls;

using QUAY.Web.UI;

using Telerik.Sitefinity.Web.UI;

using Telerik.Sitefinity.Web.UI.Fields;

using Telerik.Sitefinity.Web.UI.Fields.Enums;

using Telerik.Web.UI;

using Telerik.Sitefinity.Web.UI.Fields.Contracts;

using Telerik.Sitefinity.Web.UI.Extenders.Definitions;

namespace QUAY.Sitefinity.Modules

[FieldDefinitionElement(typeof(ThumbFieldElement))]

public class ThumbField : CustomControl, IField

private Label titleLabel;

private TextBox textBox;

private HyperLink selectLink;

#region IField Members

public void Configure(IFieldDefinition definition)

//ITextFieldDefinition definition2 = definition as ITextFieldDefinition;

//if (definition2 != null)

//

// ExpandableControlDefinition definition3 = new ExpandableControlDefinition();

// definition3.ControlDefinitionName = definition2.ControlDefinitionName;

// definition3.ViewName = definition2.ViewName;

// definition3.SectionName = definition2.SectionName;

// definition3.FieldName = definition2.FieldName;

// definition3.Expanded = definition2.ExpandableDefinition.Expanded;

// //this.ExpandableControlDefinition = definition3;

// //this.Expanded = definition2.ExpandableDefinition.Expanded;

// //this.Rows = definition2.Rows;

// //this.value = definition2.Value;

// //this.Value = definition2.Value;

// //this.HideIfValue = definition2.HideIfValue;

//

public string Description

get

return "Image";

set

public string Example

get

return "Image";

set

public string ResourceClassId

get

return "Image";

set

public string Title

get

return "Image";

set

#endregion

I've create a custom field with the type:

QUAY.Sitefinity.Modules.ThumbField, QUAY.Sitefinity.Modules

It does work, I can see the control, the control works perfectly except that:
- All other fields in the news comes in blank.

Removing the custom fields restores everything back to normal. Why my control doesn't work? And how can I retrieve the Value saved on this field?

Posted by Community Admin on 14-Apr-2011 00:00

Hi Bruno,

You can take a look at this post

www.sitefinity.com/.../creating_a_thumbnail_selector_for_news_items.aspx

Kind regards,
Ivan Dimitrov
the Telerik team

Posted by Community Admin on 14-Apr-2011 00:00

I am getting errors with that sample which prevents me from saving the news.

This control I made works, but I get all fields empty. What if I didn't want a image selector but a custom field selector? How could I make it?

---

Inheriting from TextField and overriding the controls and InitializeControls is even worse. The entire page bugs and no value is retrieved on the other fields.

...........

Posted by Community Admin on 15-Apr-2011 00:00

If anyone run on this problem be sure to:

Put the assembly info of your website to SitefinityWebApp because somewhere in Telerek's it is hard coded.

Posted by Community Admin on 28-Apr-2011 00:00

hi,

in 4.1 i keep getting the attached image whenever i click 'Back to News' without
editing the news article at all. using IE8.

thanks,
andrei

Posted by Community Admin on 28-Apr-2011 00:00

Hello Andrei,

"Back to News" is shown when you get an item for editing, so you mean that you are not editing the item fields/content? I am not able to replicate this issue with IE8. Are there issues with FF or Chrome?

Best wishes,
Ivan Dimitrov
the Telerik team

Posted by Community Admin on 28-Apr-2011 00:00

no, no issues in FF or Chrome. in IE8 however i found out that it does it only on a particular news item not on the others.
this 4.1 is behaving in some of the most strange ways. i guess i will have to delete that news item now???

andrei

Posted by Community Admin on 11-Jul-2012 00:00

Did you ever get this to work? I'm having the same problem with a DropDownList I added to the "basic" profile type. The label for the control is blank too.

Any help is appreciated,
Thanks,
Gary

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