vatCodeList is an error with string codes.
Example: ['34u' , '23' ,'tt']
Need to set the selected value there .
<select class="custom-select" formControlName="vatCode">
<option *ngFor="let i of vatCodeList">{{i}}</option>
</select>
Inside your *.component.ts
public vatCode: any;
Inside your *.component.ts you can set the value of vatCode to one of the values contained within vatCodeList, this will update the selected value.
Inside the *.component.html
<select class="custom-select" formControlName="vatCode" [(ngModel)]="vatCode">
<option *ngFor="let i of vatCodeList">{{i}}</option>
</select>
You can bind the value property like this
<option [value]="i" *ngFor="let i of vatCodeList">{{ i }}</option>
You can try to put an expression to the option tag to make an option selected
<select class="custom-select" formControlName="vatCode">
<option *ngFor="let i of vatCodeList" {{i == vatCode?'selected':'' }}>{{i}}</option>
</select>
The variable should reference the value of the InputControl. Using reactive forms it would be easy to extract the value and put it into expression.
The easiest way to bind the element to the model with ngModel but you can check if this solution helps.
Related
I have three select options in my html page. Based on the three selecting values I need to write a value in another text box.
<select (change)="aaFilter($event.target.value)" class="form-control">
<option *ngFor="let type of aa" [value]="type.value">
{{type.display}}
</option>
</select>
<select (change)="bbFilter($event.target.value)" class="form-control">
<option *ngFor="let type of bb" [value]="type.value">
{{type.display}}
</option>
</select>
<select (change)="ccFilter($event.target.value)" class="form-control">
<option *ngFor="let type of cc" [value]="type.value">
{{type.display}}
</option>
</select>
So I have Onchange function in every select box. Now In my typescript file my
aaFilter(selectedaa:string){
console.log('value is ',selectedaa);
}
Likewise I have written three functions. But based on this values I need to set up a value in textbox.
headerName(){
//Here I need to take up the threee selected values from drop down & do some function based on that.
}
How can that be done in angular 6 & typescript?
In component:
Public selectedValues = [];
aaFilter(value, index){
this.selectedValues[index] = value;
this.updateModelInput();
}
bbFilter(value, index){
this.selectedValues[index] = value;
this.updateModelInput();
}
ccFilter(value, index){
this.selectedValues[index] = value;
this.updateModelInput();
}
updateModelInput(){
if(this.selectedValues.length === 3){
// UPDATE THE VALUE IN TEXT BOX
}
}
From Template, you can pass value 0, 1, 2 as 2nd parameter in change method.
Well, you haven't bound anything to the select options have you?
<select
[(ngModel)] ="filterA"
(change) ="headerName()"
class ="form-control">
<option *ngFor="let type of aa" [value]="type.value">
{{type.display}}
</option>
</select>
<select
[(ngModel)] ="filterB"
(change) ="headerName()"
class ="form-control">
<option *ngFor ="let type of bb" [value]="type.value">
{{type.display}}
</option>
</select>
<select
[(ngModel)] ="filterC"
(change) ="headerName()"
class ="form-control">
<option *ngFor="let type of cc" [value]="type.value">
{{type.display}}
</option>
</select>
In your component file:
headerName()
{
/* Do whatever this function is supposed to do whenever one of the
filters is changed. The variables filterA, filterB and filterC will
now always have the most recent values for you to operate on */
}
I'm trying to add multiple values to the data-content attribute using angular. In order for me to target the data-content attribute I'm using the [attr.data-content] angular code for it to work.
I have a list of address I loop through and I'm trying to add multiple values to the data-content attribute e.g. address.FriendlyName and address.Description. When I add more than one property it doesn't work. Does any know how to get it working?
See the code below:
<select class="selectpicker form-control m-input">
<option *ngFor="let address of dummyAddresses" [attr.data-content]="address.FriendlyName address.Description">This is a test</option>
<option data-content="Add …">Add new address</option>
</select>
You can do string concatenation inside of attribute bindings:
<select class="selectpicker form-control m-input">
<option *ngFor="let address of dummyAddresses" [attr.data-content]="address.FriendlyName + ' ' + address.Description">This is a test</option>
<option data-content="Add …">Add new address</option>
</select>
You should make sure that your options do not include spaces to avoid creating artifacts
I have a select HTML element in an Angular ngFor loop:
<select formControlName="type" required>
<option *ngFor="let type of typeList" [ngValue]="type.value">{{ type.caption }}</option>
</select>
In Internet Explorer, the first item in the list is selected when the template loads, but it's value isn't set in the form control, so causes a 'required' validation error until another value is selected in the list. I want to have a 'Please select' option that has a null value to prevent this happening.
This is for Angular 2+ used with or without TypeScript
Add an option like so:
<option [ngValue]="null">Please select</option>
So your control will look like:
<select formControlName="type" required>
<option [ngValue]="null">Please select</option>
<option *ngFor="let type of typeList" [ngValue]="type.value">{{ type.caption }}</option>
</select>
This works as Angular inspects the value attribute because of the square brackets. The value becomes a true null, unlike if we used value="" (this is just an empty string and doesn't match null).
In case you're not using ngForm, another approach to implementing the selected value is to do something like [value]='selectedType' (change)='selectedType = $event.target.value' in your select tag. For example:
In your component.ts:
public selectedType: string;
In your component.html
<select [value]='selectedType' (change)='selectedType = $event.target.value'>
<option value=''>-- Select your Type --</option>
<option *ngFor="let type of typeList" [ngValue]="type.value">{{ type.caption }}</option>
</select>
component.ts
public selectedValue = 'None';
component.html:
<div ">
<label>Highlight</label>
<select [(ngModel)]="selectedTrunk" (change)="onChangeTrunk($event)">
<option value='None'>None</option>
<option *ngFor="let trunklist of DRLNameTrunkList" [selected]="trunk" [value]="trunklist.SIPTRUNKNAME">{{trunklist.SIPTRUNKNAME}}</option>
</select>
</div>
This is my code pelase modify as per your requirements
I have a simple problem but i don't find a solution
I have this select:
<select name="projectObjectUpdate" [ngFormControl]="_projectAmountForm.controls['projectObject']"
class="form-control form-control-select2-field">
<option *ngFor="let object of _projectObjectList" [ngValue]="object" [attr.selected]="object.id === _projectAmountForm.controls['projectObject'].value.id ? true : null">
{{object.descriptions[_user.language]}}
</option>
</select>
In the HTML code, good option is selected
but nothing is selected on screen
anyone knows the problem ?
You also could just bind ngModel on your select element.
<select name="projectObjectUpdate" [ngModel]="_projectAmountForm.controls['projectObject'].value.id" [ngFormControl]="_projectAmountForm.controls['projectObject']"
class="form-control form-control-select2-field" >
<option *ngFor="let object of _projectObjectList" [ngValue]="object" >
{{object.descriptions[_user.language]}}
</option>
</select>
This will always select the option element with the same value as _projectAmountForm.controls['projectObject'].value.id
EDIT:
Sorry, yes ngValue was wrong! I meant ngModel. Corrected.
Try binding to the [selected] attribute, like that:
<option *ngFor="let object of _projectObjectList" [ngValue]="object" [selected]="object.id === _projectAmountForm.controls['projectObject'].value.id">
I have the following HTML on my page, where I have 2 select elements. I want them both to be required. I want the second element currentModel to remain disabled until the first one is selected with a value other than Year, which is my default value.
<select class="form-control input-xsmall select-inline" data-ng-model="currentYear" >
<option>Year</option>
<option ng-repeat="year in years" value="{{year}}">{{year}}</option>
</select>
<select class="form-control input-xsmall select-inline" data-ng-model="currentModel">
<option>Model</option>
<option ng-repeat="model in models" value="{{model.niceName}}">{{model.name}}</option>
</select>
Could somebody help me with how to validate the select elements like this?
All you need to use is ng-model and ng-options instead of manually creating options via ng-repeat. Let angular create options for you.
<select class="form-control input-xsmall select-inline" data-ng-model="currentYear"
ng-options="year for year in years track by year">
<option value="">Year</option>
</select>
<select class="form-control input-xsmall select-inline" data-ng-model="currentModel"
ng-disabled="!currentYear"
ng-options ="model.niceName as model.name for model in models track by model.niceName">
<option value="">Model</option>
</select>
Plnkr
ng-options="year for year in years track by year" follows the syntax label for value in array
ng-options ="model.niceName as model.name for model in models track by model.niceName" follows the syntax select as label for value in array
Just set the ng-model for both the selects. In case of models since i used select as syntax (model.niceName as model.name) the currentModel will have niceName property of the selected item. if you remove select as part from the model it will have the respective model object.
set an ng-disabled on the 2nd select based on value of currentModel
since there is a track by bug with ng-select when dealing with objects we need to go with as syntax
ng-disabled="currentYear == -1" select your default value by doing $scope.currentYear = -1
This will make the second select box disabled if the currentYear model value is '-1'
<select class="form-control input-xsmall select-inline" data-ng-model="currentYear" >
<option value="-1">Year</option>
<option ng-repeat="year in years" value="{{year}}">{{year}}</option>
</select>
<select class="form-control input-xsmall select-inline" data-ng-model="currentModel"
ng-disabled="currentYear == 'Year'">
<option>Model</option>
<option ng-repeat="model in models" value="{{model.niceName}}">{{model.name}}</option>
</select>
Here is Plunkr example: http://plnkr.co/edit/LIAqMq4TEz9xOCUGPAUs?p=preview