I am having issues trying to bind data on a simple form. I am using a mock server and have successfully bind data to a list/table
My manifest.json looks like this
"mock": {
"dataSource": "mainService"
}
My mockdata(UserDetailsSet.json) looks like this
[{
"ID_PassNum": "cu001",
"Title": "Mr",
"Name": "Don",
"Surname": "Ownery",
"ResType": "SA",
"Country": "South Africa"
}]
My SimpleForm fields looks like this
<Label text="Name" />
<Input value="{mock>/UserDetailsSet/0/Name}" />
<Label text="Surname" />
<Input value="{mock>/UserDetailsSet/0/Surname}"/>
What am I missing?
You seem to be using an ODataModel. In ODataModels binding against collections/aggregations is not as easy as it is with a JSONModel. You can't access/bind properties with the collection/index/property syntax.
How ODataModels store data
If you load an entity set like your UserDetailSet the data stored in you ODataModel like look somewhat like this:
{
UserDetailSet('00001'): { ... },
UserDetailSet('00002'): { ... },
UserDetailSet('00003'): { ... },
UserDetailSet('00004'): { ... }
}
Whereas '00001' and so forth is the entities key. If you create an aggregation binding on UserDetailSet the ODataListBinding will handle translating the above data into a context per item.
Property Binding on ODataModel
Your binding would have to look like this:
<Label text="Name" />
<Input value="{mock>/UserDetailSet('00001')/Name}" />
<Label text="Surname" />
<Input value="{mock>/UserDetailSet('00001')/Surname}"/>
Dynamic Property Binding on ODataModel
Or - to be a little more dynamic - bind like this (Note: the bindings are relative now, no leading /):
<SimpleForm id="MyForm">
<Label text="Name" />
<Input value="{mock>Name}" />
<Label text="Surname" />
<Input value="{mock>Surname}"/>
</SimpleForm>
and dynamically use bindElement on the SimpleForm itself:
this.getView().byId("MyForm").bindElement({
path: "/UserDetailSet('"+ sUserID +"')",
model: "MyOdataModelID",
// use OData parameters here if needed
parameters: {
"expand": "UserAdress"
},
// react on binding events here
events: {
change: function (oEv) { },
dataRequested: function (oEv) { },
dataReceived: function (oEv) {}
}
});
BR
Chris
binding should be like this
<Label text="Name" />
<Input value="{mock>Name}" />
<Label text="Surname" />
<Input value="{mock>Surname}"/>
if its only one object in the mock. if not working put the controller code where you setting model to the view
Related
I have a redux-form which is used for data entry from the user(in my case the redux-form is used for recording posts in a blog).So,if I want to edit the existing data,then I want that the user will be redirected to the redux-form but the values of that particular post which the user want to edit should be passed along and the input fields in the redux-form should be populated with the existing data of the the post.So,now I am not able to figure out how to pass the data of the post to the redux-form and populate the redux-form from the beginning.My redux-form now has a function which is used in a "Field" from redux-form.The function looks like:
renderField(field) {
return(
<div className="title-design">
<label className="label-design"> {field.label} </label>
<input
type="text"
className="title-input"
{...field.input}
/>
<div className="text-help has-danger">
{field.meta.touched ? field.meta.error : ''}
</div>
</div>
);
}
And in my render method:
render() {
const { handleSubmit } = this.props;
return (
<form onSubmit={handleSubmit(this.onSubmit.bind(this))}>
<Field
label="Title for Post"
name="title"
component={this.renderField}
/>
<Field
label="Post Content"
name="body"
component={this.renderField}
/>
<Field
label="Category"
name="category"
component={this.renderCategory}
/>
<button type="submit" className="btn btn-primary">Submit</button>
<Link to="/">
<button className="cancel-button">Cancel</button>
</Link>
</form>
);
}
}
Also, can I use the same reudx-form which is used to create a new post, or do I have to create a new component only for editing the already existing posts? Can someone please help me with this.
i have created collection named as "tbl_dynamic" in that a field named "dynamicField" created in that i'm storing data like this
"_id":"LoBTiSo3oqr54Ac5R",
"text":"test",
"dynamicField" : {
"text1" : {
"checkedValue" : false
},
"text2" : {
"checkedValue : true
}
}
and in meteor side i have a template like this
<template name="tmpChecked">
<input id="newField" name="field" type="text" placeholder="Field" readonly="readonly" class="form-control" value={{key}}>
<div class="checkbox">
<label>
<input id="chkChecked" type="checkbox" name="chk_checked" checked={{checkedValue}}>
</label>
</div>
</template>
and my helper contains following code to fetch data from collection
//helper to view fields
Template.tmpChecked.helpers({
values: function() {
return tbl_dynamic.find({},{dynamicField:1,text:1});
}
});
now the problem is when i tried to display checkbox value it doesn't show me the checkedValue.
any suggestion ?
Thanks,
I understand that you want to show list of checkboxes and each checkbox followed by input box.
For this, You need to do following 2 things -
Change the data model little bit. Make the dynamicField properties as the array. Each array element containing information about field name and checked property
{
"_id":"LoBTiSo3oqr54Ac5R",
"text":"test",
"dynamicField" : [
{
"name": "text1",
"checkedValue" : false
},
{
"name": "text2",
"checkedValue : true
}
]
}
2.In template code, iterate over objects dynamicFields array and display them
<template name="tmpChecked">
{{#with values}}
{{ #each dynamicField}}
<input id="newField" name="field" type="text" placeholder="Field" readonly="readonly" class="form-control" value={{name}}>
<div class="checkbox">
<label>
<input id="chkChecked" type="checkbox" name="chk_checked" checked={{checkedValue}}>
</label>
</div>
{{/each}}
{{/with}}
</template>
You can keep helper function as it is. No need to change.
Hope this helps
I am new to angular js. and I have a situation.
I want to bind data to an input element from another input element based on a condition (checking a checkbox). I am trying to achieve this using the
ng-if angular directive. But it's not working,
So when I type something into input1 and check the checkbox, I want the value of input1 to be reflected in input2.
<input ng-model="value.one" type="text" />
<input ng-model="checked" ng-change="isChecked(value.one)" type="checkbox" />
<input ng-model="value.selected" />
in your controller:
$scope.isChecked(val) {
if($scope.checked) {
$scope.value.selected = val;
} else {
$scope.value.selected = null;
}
}
I'm currently doing the following to compensate for boolean's not mapping well to radio buttons. I am stuck binding 1 and 0 to the value (instead of true and false) because of how the fields are read out of the observables. The value of Pref1/Pref2 come as true/false boolean values from the server. The key here is I want to not only data-bind the checked value of the radio button to match the true/false in the object, but I also want the boolean value of true/false to be written back into the GraduationClass object. My compensation code is not only ugly, but not scalable.
<input type="radio" value="1" name="radioGroup" data-bind="checked: Pref1" />Yes
<input type="radio" value="0" name="radioGroup" data-bind="checked: Pref2" />No
Save
function SiteSettingsViewModel() {
var self = this;
this.saveGraduationClass = function(graduationClass) {
// hack until i get a custom radio button binding
if (graduationClass.Pref1() == 1) {
graduationClass.Pref1(true);
} else {
graduationClass.Pref1(false);
}
if (graduationClass.Pref2() == 1) {
graduationClass.Pref2(true);
} else {
graduationClass.Pref2(false);
}
// ...ajax call to save graduationClass to the server
}
function GraduationClass(data) {
var self = this;
ko.mapping.fromJS(data, {}, this);
}
Here is example from knockoutJs website, that demonstrate how to use radio buttons with
"checked" attribute:
<p>Send me spam: <input type="checkbox" data-bind="checked: wantsSpam" /></p>
<div data-bind="visible: wantsSpam">
Preferred flavor of spam:
<div><input type="radio" name="flavorGroup" value="cherry" data-bind="checked: spamFlavor" /> Cherry</div>
<div><input type="radio" name="flavorGroup" value="almond" data-bind="checked: spamFlavor" /> Almond</div>
<div><input type="radio" name="flavorGroup" value="msg" data-bind="checked: spamFlavor" /> Monosodium Glutamate</div>
</div>
<script type="text/javascript">
var viewModel = {
wantsSpam: ko.observable(true),
spamFlavor: ko.observable("almond") // Initially selects only the Almond radio button
};
// ... then later ...
viewModel.spamFlavor("msg"); // Now only Monosodium Glutamate is checked
</script>
But I dont understand why you use two objects - "Pref1" and "Pref2" fro one radiobutton group "radioGroup"? In this case you just could use one object as in an example used "spamFlavor".
So, please, describe more ditaily what you want to bind: one radiobuttons group by one selected value, or something else.
Also you could use computed observables to calculate different values, please see example.
I am starter with Play Framework. I got a problem when i passed parameters.
I want to pass a collection from view to controller. And i do not know how to do this. I always get "null" when i get a collection from view.
My code below:
Code in controller:
public static void create(List<Book> books) throws Exception {
for(Book book : books){
System.out.println(book.get(0).author) // i got null :(
}
}
Code in HTML
Book 1:
<input type="text" name="books.author" />
<input type="text" name="books.title" />
Book 2:
<input type="text" name="books.author" />
<input type="text" name="books.title" />
When i submit, i want to add 2 records into database include Book1 and Book2. Please support me
Thanks
You can make this work by simplying add the array indicator to your HTML code
Book 1:
<input type="text" name="books[0].author" />
<input type="text" name="books[0].title" />
Book 2:
<input type="text" name="books[1].author" />
<input type="text" name="books[1].title" />
I have tested this solution, and it works fine.
Also note that your println will not compile, as you are calling get(0) on the Book object, and not the List object. If you just println book.author, it outputs the author as required.
In case anyone needs an example of the Javascript for dyanmically adding and removing books (JQUERY needed):
<script type="text/javascript">
$(document).ready(function() {
var bookCount=0;
$('#btnAddBook').click(function() {
bookCount++;
//newElem = go up a to the parent div then grab the previous container
var newElem = $(this).parent().prev().clone().attr('id', 'book[' + bookCount + ']');
//for each input inside the div, change the index to the latest bookCount
$(newElem).find("input").each(function(){
var name = $(this).attr('name');
var leftBracket = name.indexOf("[");
var rightBracket = name.indexOf("]");
var beforeBracketString = name.substring(0,leftBracket+1);//+1 to include the bracket
var afterBracketString = name.substring(rightBracket);
$(this).attr('name', beforeBracketString + bookCount + afterBracketString);
});
//insert it at the end of the books
$(this).parent().prev().after(newElem);
$(newElem).find("input").each(function(){
$(this).attr('id', $(this).attr('id') + bookCount);
});
//enable the remove button
$('#btnRemovebook').removeAttr('disabled');
//If we are at 16 divs, disable the add button
if (bookCount == 15)
$(this).attr('disabled','disabled');
});
$('#btnRemoveBook').click(function() {
bookCount--;
//remove the last book div
$(this).parent().prev().remove();
//in case add was disabled, enable it
$('#btnAddbook').removeAttr('disabled');
//never let them remove the last book div
if (bookCount == 0)
$(this).attr('disabled','disabled');
});
});
</script>
<!-- HTML Snippet -->
<div id="book[0]">
<label> Book: </label>
<input type="text" name="books[0].author" value="Author" />
<input type="text" name="books[0].title" value="Title" />
</div>
<div>
<input type="button" id="btnAddbook" value="Add another book" />
<input type="button" id="btnRemovebook" value="Remove last book" disabled="disabled" />
</div>
<!-- REST of the HTML -->