How do you usually combine 2 entities into one?

Question

JavaScript

I don’t know how you can ask a question correctly, so I’ll try to explain with an example.
The API of some services returns, for example, entries and users in 2 different arrays:

{
  posts: [
    {
      user_id: 1,
      title: 'Заголовок записи #1'
      text: 'Текст записи #1'
    },
    ...
  ],
  users: [
    {
      id: 1,
      fullname: 'Пол Аллен'
    },
    ...
  ]
}

As a rule, for the convenience of displaying a list of posts with an indication of the author for each post, I solve such problems in a similar way:

var usersWithIdIndex = [];
for(var i in response.users) {
usersWithIdIndex[response.users[i].id] = response.users[i];
}

for(var i in response.posts) {
response.posts[i]['user'] = users[response.posts[i].user_id];
}

Is my decision correct and what are such decisions generally called? Are there any typical patterns for implementing such tasks?

Answer 1

there are solutions using third-party libraries
, more options with examples on fiddle,
but in general yours is quite good (except for modifying someone else's response object)