Databases
StackOverflow2013
Postsdbo
POhow to bind true/false value to checkbox with ASP.NET MVC and Knockout JS
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POhow to bind true/false value to checkbox with ASP.NET MVC and Knockout JS
    primarykey
    data
    text
    <p>I'm trying to bind the IsConfirmed field from the ASP.NET webpages_Membership table to a checkbox, using Knockout JS and can't seem to get it working.</p> <p>I have it binding to the checkbox, but unless I set it to !$data.IsConfirmed, the checkboxes are not check. I have also hooked up a click event to fire an updateUser function in my view-model, it does update it, but doesn't toggle the value sent. It always sends true, when it should send true if the checkbox is checked, otherwise false and then uncheck the checkbox.</p> <p>Here is my markup</p> <pre><code>&lt;table id="usersTable" class="table table-striped table-bordered table-hover"&gt; &lt;thead&gt; &lt;tr&gt; &lt;th&gt;User ID&lt;/th&gt; &lt;th&gt;Username&lt;/th&gt; &lt;th&gt;Role&lt;/th&gt; &lt;th&gt;Date Created&lt;/th&gt; &lt;th&gt;Last Failed Login&lt;/th&gt; &lt;th&gt;Active&lt;/th&gt; &lt;/tr&gt; &lt;/thead&gt; &lt;tbody data-bind="foreach: users"&gt; &lt;tr&gt; &lt;td&gt; &lt;span data-bind="text: $data.UserId"&gt;&lt;/span&gt; &lt;/td&gt; &lt;td&gt; &lt;span data-bind="text: $data.Username"&gt;&lt;/span&gt; &lt;/td&gt; &lt;td&gt; &lt;span data-bind="text: $data.Role"&gt;&lt;/span&gt; &lt;/td&gt; &lt;td&gt; &lt;span data-bind="text: $data.DateCreated"&gt;&lt;/span&gt; &lt;/td&gt; &lt;td&gt; &lt;span data-bind="text: $data.LastFailedLogin"&gt;&lt;/span&gt; &lt;/td&gt; &lt;td&gt; &lt;input type="checkbox" data-bind="click: updateUser, checked: $data.IsConfirmed" /&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/tbody&gt; &lt;/table&gt; </code></pre> <p>And the Javascript</p> <pre><code>&lt;script type="text/javascript"&gt; var baseUri = '@ViewBag.ApiUrl'; var self = this; self.users = ko.observableArray(); // define user view-model function UsersViewModel() { // get users to populate the view model $.getJSON(baseUri, self.users); // update the users IsConfirmed status self.updateUser = function (user) { $.ajax({ type: "PUT", url: baseUri + '/' + user.UserId, data: user }); } // re-load the users after any modifications $.getJSON(baseUri, self.users); }; $(document).ready(function () { ko.applyBindings(new UsersViewModel()); }); &lt;/script&gt; </code></pre> <p><strong>JSON From Server</strong></p> <pre><code>[{ "UserId": 6, "Username": "john@jdoe.com", "Role": "Guest", "DateCreated": "11/12/2012 1:18:41 PM", "LastFailedLogin": "", "IsConfirmed": false }, { "UserId": 3, "Username": "simpleuser", "Role": "Administrator", "DateCreated": "11/11/2012 6:17:32 PM", "LastFailedLogin": "", "IsConfirmed": false }, { "UserId": 2, "Username": "testUser", "Role": "Administrator", "DateCreated": "11/11/2012 6:17:32 PM", "LastFailedLogin": "", "IsConfirmed": false }, { "UserId": 5, "Username": "jdoe1@nowhere.com", "Role": "Student", "DateCreated": "11/12/2012 3:31:38 AM", "LastFailedLogin": "", "IsConfirmed": false }, { "UserId": 8, "Username": "nobody@somewhere.com", "Role": "Alumni", "DateCreated": "11/12/2012 1:24:15 PM", "LastFailedLogin": "", "IsConfirmed": false }, { "UserId": 9, "Username": "test@test.com", "Role": "Applicant", "DateCreated": "11/12/2012 1:25:18 PM", "LastFailedLogin": "", "IsConfirmed": false }, { "UserId": 1, "Username": "user1", "Role": "Administrator", "DateCreated": "11/11/2012 6:17:31 PM", "LastFailedLogin": "11/12/2012 4:54:51 PM", "IsConfirmed": false }, { "UserId": 4, "Username": "test@test.com", "Role": "Alumni", "DateCreated": "11/11/2012 6:22:23 PM", "LastFailedLogin": "11/11/2012 8:23:57 PM", "IsConfirmed": false }, { "UserId": 7, "Username": "test@test2.com", "Role": "Student", "DateCreated": "11/12/2012 1:23:56 PM", "LastFailedLogin": "", "IsConfirmed": false }] </code></pre> <p><strong>C# Web API Controller</strong></p> <pre><code>// GET api/Membership public IEnumerable&lt;SiteMemberDTO&gt; GetMemberships() { var users = db.webpages_Membership.AsEnumerable(); var profiles = db.UserProfiles.AsEnumerable(); // now build our DTO object var membersList = new List&lt;SiteMemberDTO&gt;(); foreach (var profile in profiles) { var member = new SiteMemberDTO() { UserId = profile.UserId, Username = profile.UserName, Role = profile.webpages_Roles.SingleOrDefault(r =&gt; r.RoleName != "").RoleName, DateCreated = db.webpages_Membership.Find(profile.UserId).CreateDate.ToString(), LastFailedLogin = db.webpages_Membership.Find(profile.UserId).LastPasswordFailureDate.ToString() }; membersList.Add(member); } return membersList; } </code></pre> <p><strong>DTO (Data-Transfer-Object)</strong></p> <pre><code> public class SiteMemberDTO { public int UserId { get; set; } public string Username { get; set; } public string Role { get; set; } public string DateCreated { get; set; } public string LastFailedLogin { get; set; } public bool IsConfirmed { get; set; } } </code></pre> <p>This is the complete code for what I'm doing. For some reason I see in the JSON it's returning false for <strong>IsConfirmed</strong>, when in the database it's true for every record.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCarl Weis
    1. USCarl Weis
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POhow to bind true/false value to checkbox with ASP.NET MVC and Knockout JS
      1. This table or related slice is empty.
      1. VTUpMod
    1. COCan you show more of your markup? You must be iterating over the users at some point I presume?
      singulars
      1. POhow to bind true/false value to checkbox with ASP.NET MVC and Knockout JS
      1. USJustin Helgerson
    2. COUpdated it with the complete markup.
      singulars
      1. POhow to bind true/false value to checkbox with ASP.NET MVC and Knockout JS
      1. USCarl Weis
    3. COIs the `IsConfirmed` property on the javascript object actually a boolean as opposed to a string value?
      singulars
      1. POhow to bind true/false value to checkbox with ASP.NET MVC and Knockout JS
      1. USJustin Helgerson
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload