flutter: match list value to map list key value - list

Question

newbie here. would anyone know how can i match the value of list x to the value of list y's key["id"]?
thank you in advance! appreciate any help. =)
list x = ["open_box", "close_box"];
list y =
[
{
"id": "open_box",
"name": "Open",
"action": ["open_box"]
},
{
"id": "close_box",
"name": "Close",
"action": ["open_box", "close_box", "pull_box"]
},
{
"id": "pull_box",
"name": "Pull",
"action": ["open_box", "close_box", "pull_box", "push_box"]
}
]

Answer 1

loop through x using for in, and then finally you can use where method from List
for (String action in x) {
dynamic temp = y.where((data) => data['id'] == action);
if (temp.isNotEmpty) {
// do someting
print(temp);
}
}
Ref: Dart Documentation - List

Answer 2

List provides a where method that allows you to filter the list based on a condition. Here I am using the where method of the y list and searching the x list for the id value of the current item in the y list. I check the length of the search for the x list and if it is greater than zero, then we have found a match inside the x list for that id. z will hold the list of items that have matched the ids from the x list inside the y list.
List x = ["open_box", "close_box"];
List y =
[
{
"id": "open_box",
"name": "Open",
"action": ["open_box"]
},
{
"id": "close_box",
"name": "Close",
"action": ["open_box", "close_box", "pull_box"]
},
{
"id": "pull_box",
"name": "Pull",
"action": ["open_box", "close_box", "pull_box", "push_box"]
}
];
var z = y.where((data) => x.where((value) => value==data["id"]).length>0);
print(z);
Here is the expected output
I/flutter ( 6086): ({id: open_box, name: Open, action: [open_box]}, {id: close_box, name: Close, action: [open_box, close_box, pull_box]})

Answer 3

list x = ["open_box", "close_box"];
list y =
[
{
"id": "open_box",
"name": "Open",
"action": ["open_box"]
},
{
"id": "close_box",
"name": "Close",
"action": ["open_box", "close_box", "pull_box"]
},
{
"id": "pull_box",
"name": "Pull",
"action": ["open_box", "close_box", "pull_box", "push_box"]
}
];
var i,j;
var yy=jsonDecode(y);
for(j=0;j<=x.length;j++){
for(i=0;i<=yy.length;i++){
if(yy[i]['id'].contains(x[j])){
//Do something if true
print(yy[i]);
}
}
}
This code compare x[0] means "open_box" to all List of Maped data of y it will print index value where conditions true