Filter by tag array

Support
1

How can I filter by an array? For example, I have a field for category and I can do:

const body = {
  filter: {
    published: true,
    'category.display': 'MyCategory',
  },
  limit: 10,
  sort: { _created: -1 },
  simple: 1
};

But, I can’t do this for an array. The only way I have found is to write the index directly, but I want it to search all the elements of the array.

const body = {
  filter: {
    published: true,
    'tags.0.display': 'MyTag',
  },
  limit: 10,
  sort: { _created: -1 },
  simple: 1
};

Is there any way to filter the entries looking in an array?

2

An old post here suggests this should be possible using:

filter: {
  tags: {
    $all: ["tag1", "tag2"]
  }
}

However, I just tested it and it doesn’t work :confused:

Maybe Artur will see this and help.

3

you need to use something like below:

{
  "filter": {
    "tags": {
      "$in": ["tag1", "tag2"]
    }
  }
}
4

Hi again

And for collectionlink arrays? This is a objects’ array. I want filter by _id

tags: Array(4)
0: {_id: "5d3a095a6566621e5200009b", link: "tag", display: "RxJs"}
1: {_id: "5d3a09666566621e54000170", link: "tag", display: "Angular"}
2: {_id: "5d3a09706566621e5200002f", link: "tag", display: "Firebase"}
5

try the following:

{
  "filter": {
    "tags._id": {
      "$in": ["tag1", "tag2"]
    }
  }
}
6

I tried but it didn’t work.

I think this is because tags is the array that contain objects that contain “_id” attribute.

7

if you have a collection with a field (collectionlink) named tags it shall work, e.g.:

5c221c99164bfc00505a580f => Collection entry “Tag 1”

{
	"populate": 0,
	"simple": 1,
	"filter": {
		"tags._id": {
			"$in": ["5c221c99164bfc00505a580f"]
		}
	}
}

[
  {
    "_id": "5d3cc660319f7500eb75c5d2",
    "title": "Page 1",
    "tags": [
      {
        "_id": "5c221c99164bfc00505a580f",
        "link": "tags",
        "display": "Tag 1"
      },
      {
        "_id": "5c221c99164bfc005441304d",
        "link": "tags",
        "display": "Tag 2"
      }
    ]
  },
  {
    "_id": "5d3cc665319f7500eb75c5d4",
    "title": "Page 2",
    "tags": [
      {
        "_id": "5c221c99164bfc00505a580f",
        "link": "tags",
        "display": "Tag 1"
      }
    ]
  }
]
8

I really tried it and it doesn’t work.

The only solution I have found for now is to search in each position of the array, since I have my posts limited to 4 tags.

Although this is not a definitive solution, but it works for me:

public getPostsByTagID(id: string) {
const body = {
  filter: {
    published: true,
    $or: [{ 'tags.0._id': id }, { 'tags.1._id': id }, { 'tags.3._id': id }, { 'tags.4._id': id }]
        },
        sort: { _created: -1 },
        limit: this.postsPerPages,
        simple: 1,
        populate: 1
    };
    return this.http.post<Post[]>(this.urlPost, body, { headers: this.headers });
}

c

9

I’m going through the same situation, although I didn’t want to have to limit the amount of “tags”.

Is there still no alternative? Just limiting it?