CODEWITHSUNDEEP
angularreduxngrx
Shane Loveland
Shane Loveland

Reputation: 527

Dynamic set of ngrx entities using @ngrx/entity

Is it possible to have a dynamic set of entities using @ngrx/entity? If so, how is it done? If not, what is the best practice for handling this situation?

Example

I have dynamic list of contracts I receive from the back-end. Under each contract I have a table of transactions that I load one by one as they are viewed. I would like to use @ngrx/entity for the line-items on this table, but because it's dynamic I don't know how to define them. here is a design:

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The only solution I can think of is to only have one entity adapter and replace the table rows each time an accordion opens. I would enforce only one open at a time. I would also have to copy off the entities when one closes so I wouldn't lose data already loaded.

The other option I can think of without using @ngrx/entity and use the same pattern to have the contract entities and then under each of those line-item entities.

Upvotes: 1

Views: 348

Answers (1)

timdeschryver
timdeschryver

Reputation: 15487

I don't know what you mean with dynamic entities in this context. I would have 2 entities: ParentEntities, LineEntities.

You start with loading ParentEntities after you expand a row you can fetch the LineEntities and start populating the state. With selectors, you can combine parent entities with their line entities. With this data, you can render your view.

Upvotes: 3

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