This is a migrated thread and some comments may be shown as answers.

How to use template expressions when bound to complex JSON object

2 Answers 269 Views
ListView
This is a migrated thread and some comments may be shown as answers.
Rod Yager
Top achievements
Rank 1
Rod Yager asked on 18 Dec 2012, 03:27 PM
I have an array of objects that are read from a JSON file. I am having difficulty referencing attributes of the child object of the parent. What is the correct syntax or what step am I missing to accomplish what I am trying to do (which is conditional template formatting)? Any help would be appreciated. Thanks.

In this example, "control.type" is what I am after in the edit template.

My static JSON looks like this...

[
{"questiontext":"Please enter the first name.","control":{"@type":"textbox","@label":"First Name"},"answer":null,"comment":"This is where the comment goes"},
{"questiontext":"What is the status?","control":{"@type":"combobox","@label":"Status:","item":[{"@key":"Open","@value":"OP"},{"@key":"Canceled","@value":"CO"},{"@key":"Closed","@value":"CL"},{"@key":"Complete","@value":"CO"}]},"answer":null,"comment":null},
{"questiontext":"What is the status?","control":{"@type":"radiobutton","@label":"Status:","item":[{"@key":"Open","@value":"OP"},{"@key":"Canceled","@value":"CO"},{"@key":"Closed","@value":"CL"},{"@key":"Complete","@value":"CO"}]},"answer":null,"comment":null},
{"questiontext":"What was the date of the incident?","control":{"@type":"datetime","@mask":"datetime","@label":"Date:"},"answer":null,"comment":null}
]

<!DOCTYPE html>
<html>
<head>
    <title>Editing</title>
    <link href="../../iqaListTest/content/kendo/2012.3.1114/examples-offline.css" rel="stylesheet">
    <link href="../../../iqaListTest/content/kendo/2012.3.1114/kendo.common.min.css" rel="stylesheet">
    <link href="../../../iqaListTest/content/kendo/2012.3.1114/kendo.default.min.css" rel="stylesheet">
 
    <script src="../../../iqaListTest/scripts/kendo/2012.3.1114/jquery.min.js"></script>
    <script src="../../../iqaListTest/scripts/kendo/2012.3.1114/kendo.web.min.js"></script>
    <script src="../../iqaListTest/scripts/kendo/2012.3.1114/console.js"></script>
</head>
<body>
    <a class="offline-button" href="../index.html">Back</a>
    <div id="example" class="k-content">
    <div class="k-toolbar k-grid-toolbar">
        <a class="k-button k-button-icontext k-add-button" href="#"><span class="k-icon k-add"></span>Add new record</a>
    </div>
         
    <div class="listview-holder">
        <div id="listView"></div>
    </div>
 
    <!--<div id="pager" class="k-pager-wrap">
    </div>-->
 
    <script type="text/x-kendo-tmpl" id="template">
        <div class="iqa-view">
            <dl>
                <dt>Question</dt>
                <dd>${questiontext}</dd>
                <dt>Answer</dt>
                <dd>${answer}</dd>
                <dt>Comment</dt>
                <dd>${comment}</dd>
            </dl>
            <div class="edit-buttons">
                <a class="k-button k-button-icontext k-edit-button" href="\\#"><span class="k-icon k-edit"></span>Edit</a>
                <a class="k-button k-button-icontext k-delete-button" href="\\#"><span class="k-icon k-delete"></span>Delete</a>
            </div>
        </div>
    </script>
 
    <script type="text/x-kendo-tmpl" id="editTemplate">
        <div class="iqa-view">
            <dl>
                <dt>${control.label}</dt>
                <dd>
                    #if (control.type == 'textbox')  { #
                         <input type="text" data-bind="value:answer" name="answer" required="required" validationMessage="required" />
                         <span data-for="answer" class="k-invalid-msg"></span>
                    # } #              
                </dd>
            </dl>
            <div class="edit-buttons">
                <a class="k-button k-button-icontext k-update-button" href="\\#"><span class="k-icon k-update"></span>Save</a>
                <a class="k-button k-button-icontext k-cancel-button" href="\\#"><span class="k-icon k-cancel"></span>Cancel</a>
            </div>
        </div>
    </script>
 
    <script>
        $(document).ready(function () {
            var dataSource = new kendo.data.DataSource({
                transport: {
                    read: {
                        url: "iqaData.txt",
                        dataType: "json"
                    }
                },
                change: function () {
                     
                }
            });
 
            var listView = $("#listView").kendoListView({
                dataSource: dataSource,
                template: kendo.template($("#template").html()),
                editTemplate: kendo.template($("#editTemplate").html())
            }).data("kendoListView");
 
            $(".k-add-button").click(function (e) {
                listView.add();
                e.preventDefault();
            });
        });
    </script>
    <style scoped>
        .iqa-view
        {
            float: left;
            width: 650px;
            margin: 5px;
            padding: 3px;
            -moz-box-shadow: inset 0 0 50px rgba(0,0,0,0.1);
            -webkit-box-shadow: inset 0 0 50px rgba(0,0,0,0.1);
            box-shadow: inset 0 0 50px rgba(0,0,0,0.1);
            border-top: 1px solid rgba(0,0,0,0.1);
            -webkit-border-radius: 8px;
            -moz-border-radius: 8px;
            border-radius: 8px;
        }
 
        .listview-holder
        {
            width: 700px;
            margin: 0 auto;
            padding: 0;
            border: 0;
            border: 1px solid rgba(0,0,0,0.1);
            height: 400px;
            overflow: auto;
        }
 
        .iqa-view dl
        {
            margin: 10px 0;
            padding: 0;
            min-width: 0;
        }
        .iqa-view dt, dd
        {
            float: left;
            margin: 0;
            padding: 0;
            height: 30px;
            line-height: 30px;
        }
        .iqa-view dt
        {
            clear: left;
            padding: 0 5px 0 15px;
            text-align: right;
            opacity: 0.6;
            width: 100px;
        }
        .k-listview
        {
            border: 0;
            padding: 0;
            min-width: 0;
        }
        .k-listview:after, .iqa-view dl:after
        {
            content: ".";
            display: block;
            height: 0;
            clear: both;
            visibility: hidden;
        }
        .edit-buttons
        {
            text-align: right;
            padding: 5px;
            min-width: 100px;
            border-top: 1px solid rgba(0,0,0,0.1);
            -webkit-border-radius: 8px;
            -moz-border-radius: 8px;
            border-radius: 8px;
        }
 
        .k-toolbar, #listView
        {
            width: 660px;
            margin: 0 auto;
            -webkit-border-radius: 11px;
            -moz-border-radius: 11px;
            border-radius: 11px;
        }
         
        span.k-invalid-msg
        {
            position: absolute;
            margin-left: 160px;
            margin-top: -26px;
        }
    </style>
</div>
</body>
</html>

2 Answers, 1 is accepted

Sort by
0
Rod Yager
Top achievements
Rank 1
answered on 18 Dec 2012, 07:06 PM
I would also like a way to loop through the control's items so that I can create more radio options or combobox values. JSON...

{"questiontext":"What is the status?","control":{"@type":"radiobutton","@label":"Status:","item":[{"@key":"Open","@value":"OP"},{"@key":"Canceled","@value":"CO"},{"@key":"Closed","@value":"CL"},{"@key":"Complete","@value":"CO"}]},"answer":null,"comment":null},

I know it looks something like this, but not sure how to do this with the objects I have via the JSON datasource.

#for (var i=0,len=KeyPairs.length; i<len; i++){#
            <li>${ KeyPairs[i] }</li>
        # } #
0
Accepted
Nikolay Rusev
Telerik team
answered on 19 Dec 2012, 08:31 AM
Hello Rod,

As you have fields which are prefixed with "@" symbol, the template that is rendering them should be formatter as follows:
<dt>${control["@label"]}</dt>
//instead of
<dt>${control.@label}</dt>
// or as in your original template
<dt>${control.label}</dt> // - there is no such field "label" it is "@label"


For more details see the sample bellow:
http://jsbin.com/irihut/1/edit

Regards,
Nikolay Rusev
the Telerik team
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI now!
Tags
ListView
Asked by
Rod Yager
Top achievements
Rank 1
Answers by
Rod Yager
Top achievements
Rank 1
Nikolay Rusev
Telerik team
Share this question
or