Implement a nested filter in Angular 8 to enhance data manipulation

Question

Implement a nested filter in Angular 8 to enhance data manipulation

Is it possible to apply a filter inside another filter in this scenario? I have a table of orders with nested tables of services, and I want to only display the orders where the type of service is 'type1'. I tried using the following line of code but it didn't work:

.pipe(map(orders => orders.filter(order => order.services.map(services => services.type === 'type1'))));

orders = [{
    0:
id: 1
rejected: false
services: (2) [{
type: 'type1'
}, 
{
type: 'type2'
}]
    1:
id: 2
rejected: false
services: (2) [{…}, {…}]

}]

angular typescript filter

Answer 1

Answer №1

It appears that you have a collection of orders, each containing a set of services with different types. Your goal is to filter out only the orders that match a specific type of service.

You need to extract the orders that belong to a specific type of service.

To achieve this, all you have to do is:

 var result = listOfOrders.filter( (order) => 
  order.services.some( (service) => 
      service.type === myValue));

In this code snippet, replace 'myValue' with the type of service you wish to filter by.

Answer 2

It appears that you have a collection of orders, each containing a set of services with different types. Your goal is to filter out only the orders that match a specific type of service.

You need to extract the orders that belong to a specific type of service.

To achieve this, all you have to do is:

 var result = listOfOrders.filter( (order) => 
  order.services.some( (service) => 
      service.type === myValue));

In this code snippet, replace 'myValue' with the type of service you wish to filter by.

Implement a nested filter in Angular 8 to enhance data manipulation

Answer №1

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