angular-dynamic-components | Frontend Framework library
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QUESTION
I'm trying to inject the FormBuilder service to a dynamic component this way:
Template:
...ANSWER
Answered 2020-Oct-21 at 11:22The ?
sign in errors like Can't resolve all parameters for class_1: (?)
means that Angular can't resolve type of parameter passed to constructor. In other words, reflector can't recognize that private fb: FormBuilder
parameter has FormBuilder
type because type dissappers after TypeScript compilation.
In order to tell TS compiler that it should keep this type you need to rewrite this class definition to version with decorator like:
QUESTION
I'm working on a component that lets a user dynamically enter rules, these rules can be of different types and dependent on the rule type different values will be captured.
I've got the dynamic components being created my problem is passing in the initial values to the dynamically created component.
The values are completely different from rule to rule so I'm trying to use the useValue in the injector but its not able to resolve the parameters if I add a parameter to accept the values in the constructor.
My injector for the components:
...ANSWER
Answered 2020-Mar-11 at 12:05You need to get passed value in your dynamic components. See official example.
So, in your case do something like:
QUESTION
I implemented a dynamic form based on this tutorial. I'd like to add simple text inputs and a custom component (Mapbox GL JS) to a dynamic form.
My problem is that I can not access the Mapbox data. The Mapbox component implements a ControlValueAccessor but I don't know how to pass the information to the form.
I created a StackBlitz where you can find my setup: https://stackblitz.com/edit/angular-xrkftm
My goal was to display the form information (text input and Mapbox marker location) below the form.
I don't know where to add [formControlName]="config.name"
. Currently it's in the map.component.ts
but I guess it needs to be implemented on the parent component.
ANSWER
Answered 2019-Oct-08 at 13:39There are several errors on load: I could fix some of them. In DynamicFormComponent you should use your config to create all the controls:
QUESTION
based on this stack overflow post (Angular Dynamic Components: @ViewChildren get ViewContainerRef for every component in QueryList), I'm trying to add dynamic component in an ngFor.
The issue is that the ViewChildred referencing the ng template is always undefined
Here my template
...ANSWER
Answered 2019-Sep-23 at 09:49You should try with ngAfterViewInit or a setter:
QUESTION
I have a custom component popup.component.ts and I use it in each of my views' markup. It sits at the bottom being invisible. When I want to pop up a message, I just switch the bound field to this.poppyVisible = true and it shows.
I realized that I never have separate popups so it would make sense to add a method to my existing util.service.ts file that does the popping for me. But I get unsure if I can do that at all and if so, if I have to pass a reference to a view child or something.
Googling the issue leads to a lot of Material stuff showing that approach and that doesn't really enlightens me on my issue. There are other that build a whole service but one way or the other, they rely on 3rd party popups.
I only need to know how a general approach should be lain out. I fear that following hte wrong blog might lead me to bad habits.
Is it possible to have a service popup a component in a view? What should I google for to avoid the default Material/Kendo things that are clouding the view?
edit
Based on the comment, I feel I might clarify that I've done the research giving me suggestions on Angular CDK that sounds like the only option. I just feel I'm not certain that I actually got it right. I've found this blog that comes closely but has way too much overhead to filter out my answer, at least on my skill level.
...ANSWER
Answered 2019-Aug-31 at 18:11with help of rxjs Subject Observable. We can able to open a popup from utilservice. Create 'showPopup' and 'hidePopup' as 2 utils methods. These methods will emit subject observable, so observers (in popup.component.ts) can receive and act on it.
utils.service.ts
QUESTION
I am getting the error: Cannot find module
...ANSWER
Answered 2018-Jul-13 at 16:59You can't do what you want to achieve with Angular CLI, because the Angular CLI build doesn't compile modules that are not referenced.
When building your project, there is no JS chunk associated with the SettingsModule
, except when we define a route before runtime.
I've found a demo project that does what you try to do here but it doesn't use the Angular CLI build, it uses tsc && concurrently \"tsc -w\" \"http-server . -c-1 \"
instead.
And I don't know which build pipeline StackBlitz uses, but it's certainly not the Angular CLI.
You can try the typescript compilation only, but it won't solve the problem for an AOT production build and you'll be forced to use your own custom build
QUESTION
I am following this tutorial to create dynamic forms in angular. The full code for the tutorial is on github Everything works nicely, but I want to add something where the parent component, which makes use of a Directive
with ComponentFactoryResolver
to dynamically create child components, is able to access the child components.
This is the Directive code:
...ANSWER
Answered 2018-Jun-01 at 07:07The solution was to use an @Output in the Directive. With the output in the Directive, you can create an even emitter to which the parent component can subscribe. That way, the directive can pass data back to the parent component. In my case I created an output in the directive that passed the child component to it like this:
QUESTION
I working on applying conditional field logic. Where two fields are dependant on their value.
Requirement: Let's say, we've a radio button with following values:
Do you want to format this code: o Yes o No
If user selects, No, nothing happens. If user selects Yes, there would be another field which will as:
Select formatting type: o HTML o PHP o Javascript
I'm using https://toddmotto.com/angular-dynamic-components-forms way for generating form, where we pass the settings to FormGroup and it generates a form.
Way I tried:
...ANSWER
Answered 2018-Feb-11 at 11:03Try changing the code to something like this:
QUESTION
I followed the Todd Motto article about dynamic form with angular 2 (https://toddmotto.com/angular-dynamic-components-forms).
Every thing works perfectly.
But I have a project, project for pleasure, where I try to pass formatted array to config, this is the data :
...ANSWER
Answered 2017-Sep-27 at 21:24@yurzui Ok my bad, I've needed to loop on config in directive ... OMG I lost so much time with it !! Thank you for your help, it helped me to understand the mistake.
QUESTION
I am new to angular2 and tried with dynamic form and its field generation by referring this URL. And i got the form as expected.
Since the dynamic form component render the field one by one using ng-container as shown below by loop it
...ANSWER
Answered 2017-Jul-14 at 16:22You can create directive that will keep reference to ViewContainerRef
. This way it will be possible to place the field wherever you want.
So let's try to describe how we can do that.
First, create directive like:
dynamic-form-field-place.directive.ts
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