Matrix Field Type as Calendar Event Attribute Throws Error Upon Editing an Event Item

[mikedotmundy]

Please go through all the tasks below

• Check this box only after you have successfully completed both the above tasks

Please provide a brief description of the problem. Please do not forget to attach the relevant screenshots from your side.

I am unable to edit an Event Item after adding a Calendar Event Attribute, field type Matrix.

Stack Trace:

at System.Web.UI.ScriptRegistrationManager.RegisterStartupScript(Control control, Type type, String key, String script, Boolean addScriptTags)
   at Rock.Web.UI.Controls.ReorderField.Initialize(Boolean sortingEnabled, Control control) in C:\Github\Rock\Rock\Web\UI\Controls\Grid\ReorderField.cs:line 85
   at System.Web.UI.WebControls.GridView.CreateChildControls(IEnumerable dataSource, Boolean dataBinding)
   at Rock.Web.UI.Controls.Grid.CreateChildControls(IEnumerable dataSource, Boolean dataBinding) in C:\Github\Rock\Rock\Web\UI\Controls\Grid\Grid.cs:line 1391
   at System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data)
   at System.Web.UI.WebControls.GridView.PerformDataBinding(IEnumerable data)
   at System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data)
   at Rock.Web.UI.Controls.AttributeMatrixEditor.BindGrid(Nullable`1 attributeMatrixGuid) in C:\Github\Rock\Rock\Web\UI\Controls\AttributeMatrixEditor.cs:line 651
   at Rock.Web.UI.Controls.AttributeMatrixEditor.set_AttributeMatrixGuid(Nullable`1 value) in C:\Github\Rock\Rock\Web\UI\Controls\AttributeMatrixEditor.cs:line 300
   at Rock.Field.Types.MatrixFieldType.SetEditValue(Control control, Dictionary`2 configurationValues, String value) in C:\Github\Rock\Rock\Field\Types\MatrixFieldType.cs:line 388
   at Rock.Web.Cache.AttributeCache.AddControl(ControlCollection controls, AttributeControlOptions options) in C:\Github\Rock\Rock\Web\Cache\Entities\AttributeCache.cs:line 779
   at Rock.Attribute.Helper.AddEditControlsForCategory(String categoryName, IHasAttributes item, Control parentControl, String validationGroup, Boolean setValue, AttributeAddEditControlsOptions addEditControlsOptions) in C:\Github\Rock\Rock\Attribute\Helper.cs:line 2851
   at Rock.Attribute.Helper.AddEditControls(String category, List`1 attributeKeys, IHasAttributes item, Control parentControl, String validationGroup, Boolean setValue, List`1 exclude, Nullable`1 numberOfColumns) in C:\Github\Rock\Rock\Attribute\Helper.cs:line 2783
   at Rock.Attribute.Helper.AddEditControls(IHasAttributes item, Control parentControl, Boolean setValue, String validationGroup, List`1 exclude, Boolean supressOrdering, Nullable`1 numberOfColumns) in C:\Github\Rock\Rock\Attribute\Helper.cs:line 2733
   at Rock.Attribute.Helper.AddEditControls(IHasAttributes item, Control parentControl, Boolean setValue, String validationGroup, Boolean supressOrdering) in C:\Github\Rock\Rock\Attribute\Helper.cs:line 2689
   at RockWeb.Blocks.Event.EventItemDetail.ShowItemAttributes() in C:\inetpub\wwwroot\Blocks\Event\EventItemDetail.ascx.cs:line 949
   at RockWeb.Blocks.Event.EventItemDetail.ShowEditDetails(EventItem eventItem) in C:\inetpub\wwwroot\Blocks\Event\EventItemDetail.ascx.cs:line 789
   at RockWeb.Blocks.Event.EventItemDetail.btnEdit_Click(Object sender, EventArgs e) in C:\inetpub\wwwroot\Blocks\Event\EventItemDetail.ascx.cs:line 286
   at System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e)
   at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)### Expected Behavior ###

Should be able to use a Matrix Attribute as a Calendar Event Attribute.

Actual Behavior

Unable to use a Matrix Attribute as a Calendar Event Attribute because you cannot edit the Event Item.

Steps to Reproduce

• Create an Attribute Matrix Template. I made a simple one with a File attribute.
• Go to the Public calendar, edit it, expand the Event Attributes section, and add an attribute, Field Type Matrix. Set it to your newly created Template.
• Save
• Click on any Event Item under this Calendar.
• Attempt to edit the Event Item.
• See error

Rock Version

v13.7, v15.0

Client Culture Setting

en-US