Flutter and Json Retrieve a Title where value is - json

Question

I have a Json array that is from wordpress. It retrives posts.
Each post has a serie of custom_options.
here an example:
{
"options":{
"wpcf-fields-select-option-f1d645c9017cce89714ede343df0cc73-1":{
"title":"-Select-",
"value":""
},
"wpcf-fields-select-option-3e64c784ce30a384e5167d1d6c1feb4e-1":{
"title":"1\/5",
"value":"S14"
},
"wpcf-fields-select-option-48334e061de93e6c47cc42c0fb5cd180-1":{
"title":"1\/8",
"value":"S1"
},
"wpcf-fields-select-option-a061ee2d2d302c5f42b2c93f9e811cdc-1":{
"title":"1\/12",
"value":"S2"
}
}
}
What I am trying to do is to call a function that will return the title of a given value.
Already tried using
// infoList is the json object
// resultVal is the value I am searching for
String getarrayinfos (infoList, resultVal) {
var result;
Map thisList = infoList;
for(var eachArr in thisList.keys){
if(thisList[eachArr]["value"] == resultVal){
result = thisList[eachArr]["title"];
}
}
return result.toString();
}
and printing it as the child of a container
// options is the json Object
// S7 is the value I am searching for
child: Text(getarrayinfos(options, "S7")),
but it prints the following error
flutter: type 'String' is not a subtype of type 'int' of 'index'
What am I doing wrong?

Answer 1

Instead of looking in infoList.keys look into infoList.values:
String getArrayInfo(Map theMap, String searchText) {
for (var val in theMap['options'].values) {
if (val['value'] == searchText) return (val['title']);
}
return 'not found';
}
void main() {
Map myMap = {
"options": {
"wpcf-fields-select-option-f1d645c9017cce89714ede343df0cc73-1": {
"title": "-Select-",
"value": ""
},
"wpcf-fields-select-option-3e64c784ce30a384e5167d1d6c1feb4e-1": {
"title": "1\/5",
"value": "S14"
},
"wpcf-fields-select-option-48334e061de93e6c47cc42c0fb5cd180-1": {
"title": "1\/8",
"value": "S1"
},
"wpcf-fields-select-option-a061ee2d2d302c5f42b2c93f9e811cdc-1": {
"title": "1\/12",
"value": "S2"
}
}
};
print(getArrayInfo(myMap, "S14"));
}