formly-js/ng2-formly

Ash McConnell

@AshMcConnell_twitter

(This is within a fieldGroup if that matters)

Ash McConnell

@AshMcConnell_twitter

Although it works fine in a stackblitz:- https://stackblitz.com/edit/angular-6d8efg-5v1pzr?file=src/app/app.component.ts

Ash McConnell

@AshMcConnell_twitter

Got the issue, I was using the same form for 2 parts of the page (I thought that would work)

Stack 0

@StekovicN_twitter

Hei @aitboudad why does validation remain on the field when we re-render it to the DOM, am i doing something wrong? Made small stackblitz demo to demonstrate https://stackblitz.com/edit/angular-gpnlq9-12goss?file=src/app/app.component.ts . You can see that validation is set first field only, but it remains on second even though it does not have validation set to it... not sure if this is expected?

4 replies

Stack 0

@StekovicN_twitter

i get it, it observes the same key :/ once we change key, it changes validator and everything works fine

Stack 0

@StekovicN_twitter

how can we achieve having same key instead of doing dirty hacks? :)

anushreenk

@anushreenk

he wrapper "fieldset" could not be found. Please make sure that is registered through the FormlyModule declaration. Why i must be getting issue

Is date range picker is possible in ngx-formly

anushreenk

@anushreenk

can someone help why I am getting the error
what wrong i am doing @aitboudad

Stack 0

@StekovicN_twitter

@anushreenk wrapper: ["label"] does not exist... you just wrote it there but it is not registered... you need to make wrapper and register it like this https://github.com/ngx-formly/ngx-formly/blob/main/src/ui/bootstrap/form-field/src/form-field.module.ts

anushreenk

@anushreenk

but how its working in this exampple

anushreenk

@anushreenk

@StekovicN_twitter Thanks I have created the wrapper and included that in my module.It worked for me

BukicMicko

@BukicMicko

@aitboudad is it possible to provide functions as string for expressionProperties and then evaluate them as function where we need to use. Something like

              this.fieldConfig.hideExpression =
                 '(model: any, formState: any, field: FormlyFieldConfig) => { if (this.fieldConfig.model.value) { return !( formState.mainModel[this.fieldConfig.model.component] && formState.mainModel[this.fieldConfig.model.component] === this.fieldConfig.model.value ); } else {  return !formState.mainModel[this.fieldConfig.model.component];  } },';

Idea is to use string for expression props and then evaluate with typescript something like:
https://stackoverflow.com/questions/45153848/evaluate-typescript-from-string
thing is i need to interpolate values from this inside string like this.fieldConfig.model.value.. etc.. If i first try to execute logic simply as function and then try to stringify

this.fieldConfig.expressionProperties = JSON.stringify(this.fieldConfig.expressionProperties);

ngx formly of course complains cause we cannot use string for hideExpression.

1 reply

farakk

@farakk

@aitboudad. Please I want to click on any step and fire (selectionChange)="selectionChanged($event)".

<mat-horizontal-stepper (selectionChange)="selectionChanged($event)" #stepperauto>
<mat-step *ngFor="let step of field.fieldGroup; let index = index; let last = last;">
<ng-template matStepLabel>
{{ step.templateOptions.label}}
</ng-template>
<router-outlet *ngIf="index === selectedStep"></router-outlet>
</mat-step>
</mat-horizontal-stepper>

public selectedStep: number = 0;
steps: any[];
data : any[];
fields: FormlyFieldConfig[];

ngOnInit() {

 ////this.steps = this.route.snapshot.routeConfig.children.map(child  => { return child.path });  //breaking

this.steps = this.route.snapshot.data.children.map(child  => { return child.path }); //breaking
let step = this.field.fieldGroup[0];
this.router.navigate([step], { relativeTo: this.route });

}

selectionChanged(event: any) {
this.selectedStep = event.selectedIndex;
this.router.navigate([this.field.fieldGroup[this.selectedStep]],{relativeTo:this.route});
}

6 replies

Ash McConnell

@AshMcConnell_twitter

Hi Folks, is it possible to use formly configuration to add a directive? I tried adding it as an attribute using templateOptions, but it doesn't get picked up

Abdellatif Ait boudad

@aitboudad

@AshMcConnell_twitter not possible, Angular doesn't support that yet.

Ash McConnell

@AshMcConnell_twitter

@aitboudad thanks!

Dominic Watson

@intellix

having an issue where the this isn't correct in my expressionProperties getter

prePopulate(field: FormlyFieldConfig) {
  field.fieldGroup = [
    {
      key: 'account',
      type: 'payment-card-form',
      expressionProperties: {
        hide: () => {
          console.log(this.state);
          return this.state === 'selector';
        },

this.state is always undefined, despite being set on the class. If I set it initially, it's the initial value at construct but doesn't update

Dominic Watson

@intellix

example: https://stackblitz.com/edit/ngx-formly-ui-material-bcsrs2?file=src%2Fapp%2Fcustom%2Fcustom.component.html

Philip

@PhilipSh

hi, anybody know how i can mark formGroup asTouched after init formly form?

i need mark invalid fields

Stefan Bakic

@sbakic

@PhilipSh It looks like you want to force validation on init form. Check this https://formly.dev/examples/validation/force-show-error

@demonbo

hello Guys, i want to ask about hideExpression in formly

is it equal to ngIf in angular or ngShow?

I'm using hideExpression and it's not remove element form DOM

Abdellatif Ait boudad

@aitboudad

@demonbo to enable that behavior set lazyRender to true, it was part of v5.10.0 release (will be enabled by default in v6)

@demonbo

@aitboudad set lazyRender in templateOption or where?

@demonbo

found where to add, thanks @aitboudad

FYI
FormlyModule.forRoot({
extras: {
lazyRender: true,
},
}),

@demonbo

@aitboudad can we set this behaviour for specific field? i do not want it apply global all formly fields

Abdellatif Ait boudad

@aitboudad

@demonbo fill an issue in Formly repo, I'll see if we can provide it in the next version

Aleix Suau

@aleixsuau

Hi all,
I've forked the repo to contribute to the docs (formlyTemplate). When running yarn demoI got a bunch of errors (e.g.

Error: src/ui/primeng/checkbox/src/checkbox.module.ts:11:17 - error NG1010: Value at position 0 in the NgModule.declarations of FormlyCheckboxModule is not a reference
  Value could not be determined statically.

src/ui/primeng/checkbox/src/checkbox.module.ts:32:14 - error NG6002: Appears in the NgModule.imports of FormlyPrimeNGModule, but could not be resolved to an NgModule class.

). Any idea of what is going on?
Thanks!

Abdellatif Ait boudad

@aitboudad

@aleixsuau not sure what's going on there 🤔, try to remove node_modules folder and use npm instead of yarn:

npm install
npm run start

the doc doesn't require running the demo, so just edit the markdown files https://github.com/ngx-formly/ngx-formly/tree/main/demo/src/app/guides in case you still having those issues

Aleix Suau

@aleixsuau

Thanks @aitboudad . I want to add an example too this is why I was trying to run the demo

Shaleen Agarwal

@shaleen76

I have created a custom element of Datepicker using https://wuschools.com/ngbdatepicker/. When the user clicks on the calendar and selects a date the date appears in YYYY-DD-MM format. I have a service contaning a formatter to format the date to MM/DD/YYYY. My question is: how can I get the value connected to the Datepicker (custom) and call my format function to format the date.

I can provide a code example, if asked.

I tried (ngModelChanges) it formats the value but not the field/model that is passed to this component.

Shaleen Agarwal

@shaleen76

https://stackblitz.com/edit/ngx-formly-demo-zf3tht?file=src%2Fapp%2Fdemo-form%2Fdemo-form.component.ts

I want to parse the date value to MM/DD/YYYY that users enters in the input field. Its a custom component. I also want to show a error message and empty the input field content if user enters invalid date format. How to achieve this? @aitboudad

farakk

@farakk

@aitboudad. Please I am getting error => TypeError: validatorOption.validation is not a function. Because we are not passing ['ip'] for validation. We are using cutom type and JSON externally, and we do not want IpValidator function. See below that actually worked in stackblitz after we edited to what we want and we removed all references to IPValidator- check @farakk/angular-vkbvjn here https://stackblitz.com/edit/angular-vkbvjn?file=app%2Fapp.component.ts But it is not working in our code {
"key": "cust",
"type": "custom",
"templateOptions": {
"label": "Custom Name",
"type":"text",
"required": true

},
"validation": {
"messages": {
"required": "Please tell us your zip code!"
}
},
"validators": {
"ip2":
{
"expression": "\control => \/\d{5}\/\.test(control\.value)\",
"message": "Not a valid IP Address"
}
}
}
ngOnInit() {
if (this.field.validators) {
JSON.parse(JSON.stringify(this.formControl
.setValidators(JSON.parse(this.field?.validators?.validation))));

Abdellatif Ait boudad

@aitboudad

@farakk the expression property does not accept a string value

farakk

@farakk

@aitboudad Thanks for responding. Maybe you can make that happen in the future. Happy holiday

Dominic Watson

@intellix

when I do a control.setValue(something) it's running validation and I can't for the life of me figure out how to mark the field as untouched:

phoneCtrl.setValue(value);
phoneCtrl.markAsPristine();
phoneCtrl.markAsUntouched();

Abdellatif Ait boudad

@aitboudad

@intellix markAsUntouched should work I think, I may help if you could provide a reproduction

1 reply

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