Sorting objects in a Json without id in Angularjs

Question

How can I sort the display of a Json object array in Angular, ng-repeat? orderBy? and this json has no id to do this ordering, I would like to be able to sort it by sequence of "last added".

Answer 1

The best way is to use an Angular feature called "filter", it allows you to manipulate a value, you can use "order by" for this, something like :

{{item in items | orderby : 'date' }}

Here is a topic from Stackoverflow on the subject: https://stackoverflow.com/questions/16261348/descending-order-by-date-filter-in-angularjs

Answer 2

Like the William spoke, you can use the filters that Angularjs itself offers you. But, since you don’t seem to have any attributes within your JSON that can be used directly to do this sort, you might want to create your own sort filter:

app.filter('meuFiltroOrdenarPor', function(){
    return function(array, atributo) {
        // sua função de sort para ordenar o "array" considerando "atributo"
        return array;
    }
});

and to call you in HTML:

{{seuObjetoJSON | meuFiltroOrdenarPor}}

However, if you need to sort by "last added", I don’t see a way to solve this that doesn’t involve putting this attribute in your JSON, making every object have such an attribute.

It would help a lot if you could put an example of JSON that you are dealing with.

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References:

• https://docs.angularjs.org/tutorial/step_09
• https://docs.angularjs.org/api/ng/filter/orderBy