CODEWITHSUNDEEP
flutterdart
ajnabz
ajnabz

Reputation: 308

Class 'Timestamp' has no instance method 'isAfter' Flutter

I am trying to return only events that are happening after DateTime.now() in Flutter. I am taking the events from cloud firestore and have declared the date and time under event_date.

This is my code:

new StreamBuilder(
    stream: FirebaseFirestore.instance
        .collection('Events')
        .orderBy('event_date', descending: false)
        .snapshots(),
        builder: (context, snapshot) {
            if (!snapshot.hasData)
            return Text('Loading data... Please Wait');

            return new Container(
                height: 100.0,
                child: new ListView(
                    scrollDirection: Axis.horizontal,
                    children: snapshot.data.documents.map<Widget>((DocumentSnapshot document) {
                        if ((document.data()['event_date']).isAfter(now)) {
                            return new Card(
                                color: Color(0xff004FB2),
                                child: new Container(
                                    width: 100.0,
                                    height: 100.0,
                                    child: new Text(document.data()['title']),
                                ),
                            );
                        } else {
                            return Container();
                        }
                    }).toList(),
                ),
            );
        },
    ),

The error I am getting is:

Class 'Timestamp' has no instance method 'isAfter'.
Receiver: Instance of 'Timestamp'
Tried calling: isAfter(Instance of 'DateTime')

Any help would be appreciated as I have never used the isBefore or isAfter before so I am struggling a bit.

Upvotes: 0

Views: 1733

Answers (2)

Sergei Sevriugin
Sergei Sevriugin

Reputation: 498

Alternative solution using Timestemp. It has the following public method:

public int compareTo (Timestamp other)

and also has

static Timestamp now()

so, you need to check

(document.data()['event_date']).compareTo(Timestamp.now())

Upvotes: 0

pedro pimont
pedro pimont

Reputation: 3084

Try first converting your Timestamp object into a DateTime object

(document.data()['event_date']).toDate().isAfter(now)

or:

(document.data()['event_date']).toDate().isAfter(now.toDate())

let me know if it worked

Upvotes: 1

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