how to filtering javascript array of objects

Question

I have got two arrays . I am filtering based groupKey with PubSidebar.

相关标签:

Answer 1

If I understand correctly you want to filter PubSidebar. Keeping values if they have a role of public or a value of whats included in the groupKey. If so this would be your function:

PubSidebar.filter(x => (x.role === 'public' || groupKey.includes(x.value));

If you want to run that on content as well we could pull it apart:

const filterByGroup = (x) => (x.role === 'public' || groupKey.includes(x.value));

let result = [];
for (let i = 0; i < PubSidebar.length; i++) {
  const item = PubSidebar[i];

  if (filterByGroup(item)) {
    if (item.content) {
      item.content = item.content.filter(filterByGroup);
    }
    result = [ ...result, item ];
  }
}

Snippet:

let groupKey = ['oaDeal', 'Journals', 'Deposit']
const PubSidebar = [{
    value: 'Dashboard',
    role: 'public',
  },
  {
    value: 'oaDeal',
    role: 'private',
    content: [{
      role: 'private',
      value: 'oaDeal',
    }, ],
  },
  {
    value: 'Journals',
    role: 'public',
    content: [{
        role: 'private',
        value: 'Journals',
      },
      {
        role: 'private',
        value: 'Token',
      },
      {
        role: 'private',
        value: 'policy',
      },
      {
        role: 'private',
        value: 'Deposit',
      },
      {
        role: 'public',
        value: 'test'
      },
    ],
  },
]

const filterByGroup = (x) => (x.role === 'public' || groupKey.includes(x.value));

let result = [];
for (let i = 0; i < PubSidebar.length; i++) {
  const item = PubSidebar[i];

  if (filterByGroup(item)) {
    if (item.content) {
      item.content = item.content.filter(filterByGroup);
    }
    result = [...result, item];
  }
}
console.log(result);

Answer 2

apply filter on array items and on content of each item.

const update = (data, keys) => {
  const publicOrGroup = ({ role, value }) =>
    role === "public" || keys.includes(value);

  return data.filter(publicOrGroup).map(({ content = [], ...item }) => ({
    ...item,
    content: content.filter(publicOrGroup)
  }));
};

const groupKey = ["oaDeal", "Journals", "Deposit"];
const PubSidebar = [
  {
    value: "Dashboard",
    role: "public"
  },
  {
    value: "oaDeal",
    role: "private",
    content: [
      {
        role: "private",
        value: "oaDeal"
      }
    ]
  },
  {
    value: "Journals",
    role: "public",
    content: [
      {
        role: "private",
        value: "Journals"
      },
      {
        role: "private",
        value: "Token"
      },
      {
        role: "private",
        value: "policy"
      },
      {
        role: "private",
        value: "Deposit"
      },
      {
        role: "public",
        value: "test"
      }
    ]
  }
];

console.log(update(PubSidebar, groupKey));

Answer 3

You could take a filtering for any depth and reassemble the objects for the result.

const
    filter = ({ content = [], ...o }) => {
        content = content.flatMap(filter);
        if (o.role !== 'public' && !groupKey.includes(o.value)) return [];
        return content.length ? { ...o, content } : o;
    },
    groupKey = ['oaDeal', 'Journals', 'Deposit'],
    pubSidebar = [{ value: 'Dashboard', role: 'public' }, { value: 'oaDeal', role: 'private', content: [{ role: 'private', value: 'oaDeal' }] }, { value: 'Journals', role: 'public', content: [{ role: 'private', value: 'Journals' }, { role: 'private', value: 'Token' }, { role: 'private', value: 'policy' }, { role: 'private', value: 'Deposit' }, { role: 'public', value: 'test' }] }],
    result = pubSidebar.flatMap(filter);

console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }