Agregar y editar en iónica angular

agregar y editar en iónica de la página

<ion-header>
    <ion-navbar>
        <ion-title>SUBSCRIPTION</ion-title>
    </ion-navbar>
</ion-header>

<ion-content>
    <ion-item>
        <ion-buttons end>
            <button ion-button [disabled]="!isenabled" class="add_buttn" (click)="add_page()">Add/Edit</button>
        </ion-buttons>
    </ion-item>
    <ion-label class="sentnc">Take your desired plan to get access to our content easily</ion-label>
    <ion-row>
        <ion-col col2>
            <ion-card  (click)="onCardClick()">
                    <!-- <div *ngIf="cardClicked"></div> -->
                <ion-card-content>
                    <ion-card-title class="titles">
                        FREE
                    </ion-card-title>
                    <p>1 MONTH FREE</p>
                    <p>&nbsp;</p>
                    <p class="cost">₹0</p>
                    <p>&nbsp;</p>
                    <p>
                        <button (click)="free_pay()" ion-button color="dark" round>Choose plan</button>
                    </p>
                </ion-card-content>
            </ion-card>
        </ion-col>

        <ion-col col2>
            <ion-card (click)="onCardClick()">
                <ion-card-content>
                    <ion-card-title class="titles">
                        CLASSIC
                    </ion-card-title>
                    <p>6 MONTHS PLAN</p>
                    <p><del>₹150</del></p>
                    <p class="cost">₹100<sub>/month</sub></p>
                    <p>&nbsp;</p>
                    <p>
                        <button (click)="classic_pay()" ion-button color="dark" round>Choose plan</button>
                    </p>
                </ion-card-content>
            </ion-card>
        </ion-col>

        <ion-col>
            <ion-card (click)="onCardClick()">
                <ion-card-content>
                    <ion-card-title class="titles">
                        PREMIUM
                    </ion-card-title>
                    <p>1 YEAR PLAN</p>
                    <p><del>₹250</del></p>
                    <p class="cost">₹200<sub>/month</sub></p>
                    <p>&nbsp;</p>
                    <p>
                        <button (click)="premium_pay()" ion-button color="dark" round>Choose plan</button>
                    </p>
                </ion-card-content>
            </ion-card>
        </ion-col>
    </ion-row>
</ion-content>