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json_resolve is a Dart library that helps accessing property in deep json object easily using keypath
Given the following deeply nested json
{
"movie": "isFun",
"earth": 199999,
"dc": [
{
"name": "Superman"
},
{
"name": "Flash"
},
{
"name": "Wonder Woman"
}
],
"marvel": [
{
"name": "Thor",
"weapon": "Mjolnir",
"appear": [
{
"year": 2011,
"title": "Thor"
},
{
"year": 2013,
"title": "The Dark World"
},
{
"year": 2017,
"title": "Ragnarok"
}
]
}
]
}We can access using keypath. The library ensures safe type checking and casting, and use provided default value as last resort
final String byProperty = resolve(json: json, path: "movie", defaultValue: "error");
expect(byProperty, "isFun");
final int byInt = resolve(json: json, path: "earth", defaultValue: 0);
expect(byInt, 199999);
final String byIndex = resolve(json: json, path: "dc.2.name", defaultValue: "error");
expect(byIndex, "Wonder Woman");
final String byIndexThenProperty = resolve(json: json, path: "marvel.0.appear.1.title", defaultValue: "error");
expect(byIndexThenProperty, "The Dark World");First of all add the following dependencies to your pubspec.yaml:
dependencies:
json_resolve: ^1.0.0
Khoa Pham, [email protected]
json_resolve is available under the MIT license. See the LICENSE file for more info.
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