flutter error : Expected a value of type 'int' but got one of type 'Null'
312
The error ocurrs in your "fromJson" parsing, replace your factory fromJson function to this:
factory Establishment.fromJson(Map<String, dynamic> json) {
return Establishment(
id: json['establishmentId'],
name: json['establishmentName'],
addressid: json['addressId'],
documentationid: json['documentationId']);
}
Tip: Check the camelCase name, the names must be equals in your parsing.
Author by
GIBS
Updated on January 03, 2023Comments
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GIBS over 1 year
response body from the .NET Core 6 API :
[{"establishmentId":1,"establishmentName":"Secret","addressId":1,"documentationId":1,"address":null,"documentation":null,"associationsEts":[],"prices":[]},{"establishmentId":2,"establishmentName":"HRB","addressId":2,"documentationId":2,"address":null,"documentation":null,"associationsEts":[],"prices":[]}]
My model class :
class Establishment { final int id; final String name; final int addressid; final int documentationid; Establishment( {required this.id, required this.name, required this.addressid, required this.documentationid}); factory Establishment.fromJson(Map<String, dynamic> json) { return Establishment( id: json['id'], name: json['name'], addressid: json['addressid'], documentationid: json['documantationid']); } }
The problem is that snapshot got an error , I would like snapshot to accept null values, could someone help me to fix this ? Thanks
UPDATE :
The problem doesn't occurs in the from json beacuase since I modified them, the probelm still occurs
class Establishment { final int establishmentId; final String establishmentName; final int addressId; final int documentationId; Establishment( {required this.establishmentId, required this.establishmentName, required this.addressId, required this.documentationId}); factory Establishment.fromJson(Map<String, dynamic> json) { return Establishment( establishmentId: json['establishmentId'], establishmentName: json['establishmentName'], addressId: json['addressId'], documentationId: json['documantationId']); } }
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John Siu almost 2 yearsSame issue, do you have a solution? BTW, if an answer doesn't solve the issue, you can remove the checkmark.
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GIBS over 2 yearsthanks ! have done it but stil get snapshot error
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GIBS over 2 yearswhat could I do ?