var Error-dictionary = [
{
code:599,
MSG:'unknown'
},
{
code:404,
MSG:'not found'
},
{
code:599,
MSG:'unknown'
}
]
I would like to transform the data structure into something similar to:
[
{
code : 599,
count:2,
MSG : 'unknown',
code :404,
count:1,
MSG : 'not found'
}
]
and then add it to $scope.alerts as a message.
The error codes and messages can vary dynamically.
If you need to retrieve the occurrences of a specific property within an array of objects, look no further than underscore.js. It's a simple and effective solution!
<script src="http://underscorejs.org/underscore-min.js"></script>
<script>
window.onload = function () {
var propertyArray = [
{id: 123, category: 'fruit' },
{id: 456, category: 'vegetable'},
{id: 123, category: 'fruit'}
];
var result = _.groupBy(propertyArray, function (obj) {
return obj.id;
});
var newArray = [];
for(var key in result) {
var id = key;
var values = result[key];
var category = values[0].category;
var quantity = values.length;
newArray.push({ id : id, category: category, quantity: quantity });
};
console.log(newArray);
};
</script>
To solve the problem, first create a temporary object using the error code and message as keys. Then, iterate through the data array and populate the temp object with unique key-value pairs. Finally, push each item from the temp object into an output array.
var tempObj = {}, resultArr = [];
data.forEach(function (item) {
var tempKey = item.code + item.MSG;
if (!tempObj.hasOwnProperty(tempKey)) {
tempObj[tempKey] = angular.copy(item);
tempObj[tempKey].count = 0;
}
tempObj[tempKey].count++;
});
for(var key in tempObj) {
resultArr.push(tempObj[key]);
}
$scope.errors = resultArr;
console.log($scope.errors);
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