How can I extract specific values from all items in axios response object to a a vuex state

Question

This is driving me nuts!

I have got an axios call returning an json array object in console - Check!

>(100) [{…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}]
>0:
id: 54892250
iid: 1001
ref: "master"
sha: "63e3fc014e207dd4e708749cee3e89a1aa416b7d"
created_at: "2020-03-05T18:57:02.793Z"
updated_at: "2020-03-05T19:06:27.651Z"
>user: {id: someuserid, name: "someuser", username: "someusername", state: "active", avatar_url: "https://assets.gitlab-static.net/uploads/-/system/user/avatar/4534925/avatar.png", …}
>environment: {id: 123456, name: "somename", slug: "somename-iw5iqp", external_url: "https://someaddress.com"}
>deployable: {id: someid, status: "success", stage: "deploy", name: "deploy-staging", ref: "master", …}
status: "success"
__proto__: Object
>1: {id: 54804365, iid: 1000, ref: "filter-out-expired-items", sha: "6225d8018c86fa906063aeea5c10c710ddced14c", created_at: "2020-03-05T12:25:18.949Z", …}
>2: {id: 54804175, iid: 999, ref: "master", sha: "aa5e50c50ba95e9b16cbc57fb968bf9075c625b2", created_at: "2020-03-05T12:24:02.284Z", …}
>3: {id: 54801934, iid: 998, ref: "filter-out-expired-items", sha: "4fc2

Now I need to do 2 things with this result:

1. when fully expanded this response is large - and there are thousands of them. Rather than store 1000s of giant json reponses in a vuex state - I want to first only extract the values we care about which are the following:
   • id
   • ref
   • environment.name
   • status
   • deployable.tag

to something like:

{ "id": id, "ref": ref, "environment": environment.name, "status": status, "tag": deployable.tag, }

How do I do this?

2. This response is paginated over many pages above is just a partial sample from one page's results.

I have a working loop for that and I am getting the console.log for all of them. BUT what I need to do is concatenate all pages (now stripped to the above fields) before I commit to the state. If have tried object copies, pushing to arrays and all kinds of utils promising the world - but I cannot get any of them working :)

So in summary:

1. get a page's results
2. squash item in the array to a simplified version
3. collect them all into a object I can insert into the state

Relevant part of the loop

  // Use headers to get the number of pages
  const pages = await axios.head(url, options)
    .then((response) => response.headers['x-total-pages']);
  console.log('pages=', pages); // DEBUG
  // Loop through and push them to an array
  for (let i = 0; i <= pages; i += 1) {
    console.log('i=', i);
    options = {
      headers: {
        'Private-Token': token,
      },
      params: {
        order_by: 'created_at',
        sort: 'desc',
        per_page: 100,
        page: i,
      },
    };
    axios.get(url, options)
      .then((result) => { console.log(result.data); })
  }

Answer 1

Create an array for the total results:

const results = [];

Where you're logging, parse each individual result:

result.data.forEach(item => {
  results.push({
     id: item.id,
     ref: item.ref,
     environment: item.environment.name,
     status: item.status,
     tag: item.deployable.tag
  });
});

Note that it may be a performance optimization to use a normal for loop instead of forEach.