angular / angular/components

bug(autocomplete): DisplayWith retriggering + Programmatical value selection

Aperta
#28,161 1 commento 1 reazione 0 assegnatari Vedi su GitHub
area: material/autocomplete P3
Lingua principale
TypeScript
Stelle
25k
Fork
6.8k
Merge medio
1g 8h
PR unite (30g)
91

Descrizione

### Is this a regression?

- [ ] Yes, this behavior used to work in the previous version

### The previous version in which this bug was not present was

_No response_

### Description

1. It's impossible to retrigger displayWith method (only when resetting form value).
2. Initial data is not displayed on dropdown with checkmark symbol, when property is binded. After selection all is working
2.1 When changing value programatically, checkmark is displayed on wrong selection.

### Reproduction

StackBlitz link: https://stackblitz.com/edit/zkwk2u
Steps to reproduce:
1. Change language
2. Value is not translated + not possible trigger displayWith. I tried different things, even updateValueAndValidity on formControl, which should really execute ValueChanges. Only when changing property value with setValue, it triggers displayWith method. With this approach I saw second problem, with programmatically changing control value.

1. Open link, selected value is displayed correctly with displayWith
2. Open dropdown no selection is displayed.
3. Select new value (first value) from dropdown (value is displayed correctly with check mark)
4. Click button (it changes value to 3, 3rd selection)
5. Value change is triggered and input shows correct data.
6. Open dropdown, it still shows wrong selection

### Expected Behavior

1. It's possible to trigger programmatically displayWith
2. Programmatically selected value + initial value is displayed correctly

### Actual Behavior

1. When already displayed value with displayWith, then this is not possible to change
2. Selection is not shown or shown wrongly

### Environment

- Angular: 17.0.0
- CDK/Material: 17.0.1
- Browser(s):
- Operating System (e.g. Windows, macOS, Ubuntu):

Guida per i contributori

Apri la guida per i contributori

Direzione di ricerca

Inizia dalla riproduzione collegata su StackBlitz e analizza il comportamento di Angular Material autocomplete in relazione a displayWith, ai valori iniziali e alle modifiche programmatiche di setValue. Il lavoro è completato quando displayWith può essere riattivato programmaticamente e il segno di spunta del menu a discesa segue correttamente sia i valori selezionati inizialmente sia quelli selezionati programmaticamente.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Valutazione

Stack tecnologico
angular, typescript
Ambito
frontend
Tipo di issue
Bug
Difficoltà
3/5
Tempo stimato
1-2 giorni
Stato di attività
Ferma
Chiarezza
Abbastanza chiara
Idoneità per principianti
35/100

Ricevi le nuove issue nella tua casella

Un breve riepilogo di issue GitHub adatte ai principianti.