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Format Date in View Model DisplayFor and EditorFor

Posted on 2014-04-22
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Last Modified: 2014-05-20
I had a question on Forums.Asp.Net that asked
"The Format date in view Model at  http://forums.asp.net/t/1945089.aspx?Format+Date+in+view+model tells how to add an attribute to a date property in the model like below to get it to display as a Date only. However I am wondering if this is done with an Entity Framework Database First Model, will this be maintained after you do an Update From Database?"
The code I am referring to is here:
Display(Name = "Start Date")]
        [Required(ErrorMessage = "Please enter a start date")]
        [DataType(DataType.Date)]
        [DisplayFormat(DataFormatString = "{0:MM/dd/yyyy}")]
        public string startDate { get; set; }

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I was told to use the Metadata files so eventually I changed the meta data files as below
using System;
using System.ComponentModel.DataAnnotations;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;
using System.Data.Objects;
using System.Data.Objects.DataClasses;
using System.Linq;
using System.Web.Mvc;

namespace VFS_ProcurementTracking.Models
{
    [MetadataType(typeof(prc_RequirementMetaData))]
    public partial class prc_Requirement
    {
        internal sealed class prc_RequirementMetaData
        {
            private prc_RequirementMetaData()
            {
            }
        }

        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
        public Nullable<System.DateTime> CustomerRDD { get; set; }

        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
        public System.DateTime Import_CreateDate { get; set; }
    }
}

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However the EditorFor's and DisplayFor's did not display the specified format.  does anyone see what I am doing incorrectly and provide guidance?  It is important to note that both of those fields have JQueryUI datepickers attached so that it is important that it can read the entry as a date.
0
Comment
Question by:Edward Joell
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19 Comments
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 40016955
How are you outputting the value in your view? The strongly typed editors (i.e. TextBoxFor, etc) don't support the DataFormatString, whereas the more general EditorFor does
0
 

Author Comment

by:Edward Joell
ID: 40017383
I am using EditorFor and DisplayFor.  I am insufficiently experienced to play around with tools other than those two and dropDownlistfor.
0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 40017418
Your metadata properties should be inside the metadata class. Like:
namespace VFS_ProcurementTracking.Models
{
    [MetadataType(typeof(prc_RequirementMetaData))]
    public partial class prc_Requirement
    {
        internal sealed class prc_RequirementMetaData
        {
            private prc_RequirementMetaData()
            {
            }
 
            [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
            public Nullable<System.DateTime> CustomerRDD { get; set; }

            [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
            public System.DateTime Import_CreateDate { get; set; }
        }
    }
}

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If that still doesn't work, can you post the code for your View too.
0
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Author Comment

by:Edward Joell
ID: 40017431
Maybe my eyes aren't working properly. However, I fail to see how that differs from the code I posted above.  Can someone point out what I am missing?
0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 40017444
In your original post you have the Metadata properties outside of your metadata class. The revised version moves the closing brace of the metadata class down, so that it incorporates the properties.

So basically the brace at line 20 in your original post is now at line 17 of the revised version.
0
 

Author Comment

by:Edward Joell
ID: 40017821
Great.  i will try that.
0
 

Author Comment

by:Edward Joell
ID: 40017988
I set up the meta data like this
using System;
using System.ComponentModel.DataAnnotations;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;
using System.Data.Objects;
using System.Data.Objects.DataClasses;
using System.Linq;
using System.Web.Mvc;

namespace VFS_ProcurementTracking.Models
{
    [MetadataType(typeof(prc_RequirementMetaData))]
    public partial class prc_Requirement
    {
        internal sealed class prc_RequirementMetaData
        {
            private prc_RequirementMetaData()
            {
            }
        

            [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
            public Nullable<System.DateTime> CustomerRDD { get; set; }

            [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
            public System.DateTime Import_CreateDate { get; set; }
        }
    }
}

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It made no difference.   Both date and time are shown in EditorFor and DisplayFor.  
Same fields different issue.  The one field is nullable but the other is not.  So when an empty "Create" view is shown, the editorfor is showing 01/01/0001 12:00:00 AM.  I would like that to show the current date and only the date by default.  How can I do that.
0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 40019456
Is your prc_Requirement class in the same namespace as the underlying Entity Framework class?

The code you have is technically correct for what you are trying to do, so the issue may be that it is treating your class as separate from the underlying entitiy.
0
 

Author Comment

by:Edward Joell
ID: 40019793
yes
0
 

Author Comment

by:Edward Joell
ID: 40050420
As state above the the prc_Requirement class is in the same namespace.  So what would be treating my class as separate from the underlying entity, and why?
0
 

Author Comment

by:Edward Joell
ID: 40067862
Here is a thought
The model being displayed in the view contains a property of type "prc_Requirement" above.  Maybe, it is not enough to set the DisplayFormat in metadata for the "prc_Requirement model" but in metadata for the "RequirementViewShowingModel" as well?
0
 

Author Comment

by:Edward Joell
ID: 40067908
But the question is since the fields CustomerRDD and Import_ExportDate are in the Requirements Model I do I refer to them in the Metadata file?  Just setting them with there own names did not work as the view could not find the fields for which the metadata was created.  Referring to them as Requirement.CustomerRDD  and Requirement.Import_ExportDate did not work because of compile time errors.
0
 

Assisted Solution

by:Edward Joell
Edward Joell earned 0 total points
ID: 40068533
Rachel Appel solved everything with her blog here Rachel Appel solved everything with her blog here http://rachelappel.com/create-user-friendly-date-fields-with-asp.net-mvc-editortemplates-amp-jqueryui  about using templates.
0
 

Author Comment

by:Edward Joell
ID: 40068550
I've requested that this question be closed as follows:

Accepted answer: 0 points for Joeller's comment #a40068533

for the following reason:

This works excellently.  CUDOS to Rachel Appel
0
 

Author Comment

by:Edward Joell
ID: 40068551
Need to Undo this as solved because the templates do not work on the Create view because at that time the Model's DateTime property is null and the template caused an error "The model item passed into the dictionary is null, but this dictionary requires a non-null model item of type 'System.DateTime'."  So I need a way for this to work in the create View
0
 

Accepted Solution

by:
Edward Joell earned 0 total points
ID: 40068602
At stackoverflow.com/questions/4249955/mvc-3-editor-template-with-datetime I found the solution I changed Rachel's template from
@model DateTime

@Html.TextBox("", String.Format("{0:d}", Model.Date.ToShortDateString()))

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To
@model DateTime?
@Html.TextBox("", String.Format("{0:d}", (Model.HasValue ? Model.Value.ToShortDateString() : string.Empty) ))

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And that fixed everything
0
 

Author Closing Comment

by:Edward Joell
ID: 40077104
Kudos to StackOverflow's Fabian, and Rachel Appel
0

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