Angular CanDeactivate Guard 不適用於 Sweet Alert JS

Question

我在帶有Sweet Alert js 的Angular 中使用CanDeactivate防護。 但是確定點擊不會被觸發。 我是 Angular 的新手，請幫忙。 這是帶有甜蜜警報的代碼。 顯示甜蜜警報，但確定單擊不起作用。

export class QuestionEditGuard implements CanDeactivate<FeedbackQuestionEditPage> {
    canDeactivate(component: FeedbackQuestionEditPage): Observable<boolean> | Promise<boolean> | boolean {
        if (component.questionForm.dirty) {
            const question = component.questionForm.get('description').value || 'New Question';
            swal.fire({
                title: 'Hey there!!',
                text: `Navigate away and lose all changes to ${question}?`,
                type: 'warning',
                showCancelButton: true,
                confirmButtonText: 'OK',
            }).then((result) => {
                return true;
            });

            return false;
        }
        return true;
    }
}

但正常Confirm它有效。

export class QuestionEditGuard implements CanDeactivate<FeedbackQuestionEditPage> {
    canDeactivate(component: FeedbackQuestionEditPage): Observable<boolean> | Promise<boolean> | boolean {
        if (component.questionForm.dirty) {
            const question = component.questionForm.get('description').value || 'New Question';
            return confirm(`Navigate away and lose all changes to ${question}?`);
        }
        return true;
    }
}

我錯過了什么嗎？

Answer 1

您必須像正常confirm一樣return Swal.fire函數

export class QuestionEditGuard implements CanDeactivate<FeedbackQuestionEditPage> {
    canDeactivate(component: FeedbackQuestionEditPage): Observable<boolean> | Promise<boolean> | boolean {
        if (component.questionForm.dirty) {
            const question = component.questionForm.get('description').value || 'New Question';
            return swal.fire({ // <- return here
                title: 'Hey there!!',
                text: `Navigate away and lose all changes to ${question}?`,
                type: 'warning',
                showCancelButton: true,
                confirmButtonText: 'OK',
            }).then((result) => {
                if (result.value) {  // check if OK pressed
                    return true;
                } else {
                    return false;
                }
            })
        } else {
            return true;
        }
    }
}