Question 79806 in Flutter Question posted in
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How to convert list into map form and get result like this? – Flutter

How to convert a list into map form and get results like this:

{"data":[{"id_pet":"63","id_habit":0},{"id_pet":"64","id_habbit":0}]}

My code:

event.listPet.asMap();

My list:

↓   pet: List (2 items)
  ↓ [0]: Pet
    id_pet: 1
    id_habbit: 1
  ↓ [1]: Pet
    id_pet: 2
    id_habbit: 2
Tags:

2

Answers


  1. 0 
    return {"data": event.listPet.map((e) => e.toMap()).toList(),};

    You should make sure toMap method is defined in your Pet class.

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  2. 0

    use fromIterable

    Map<String, dynamic> map1 = {
    "id_pet":"63",
    "id_habit": 0
  };
  
   Map<String, dynamic> map2 = {
    "id_pet":"64",
    "id_habit": 0
  };
  List<Map<String, dynamic>> list = [];
    
  list.add(map1);
  list.add(map2);
  
  var map3 = Map.fromIterable(list, key: (e) => "data", value: (e) => list);
  print(map3);
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