To filter collection results, pass the filter argument to the <collection>Connection query, followed by any of the filter operator types for the fields on your collection.

The filter object is a nested set of conditions where the keys correspond to the collection field and the value describes the condition.

Conditions can be either "binary" or "ternary". A binary condition is composed of a single operator and a single operand (i.e. {"eq":"foo"}). A ternary condition is composed of two operators and two operands (.i.e. {"gt":0, "lte": 10}).

Operator types

Key	Behavior	Type(s)
eq	Equals	string, number, boolean
in	One of	string[], number[], boolean[]
gt	Greater than	string, number
gte	Greater than or equal to	string, number
lt	Less than	string, number
lte	Less than or equal to	string, number
startsWith	Starts with	string
after	After	datetime
before	Before	datetime

Only gt, gte, lt, lte, after, before may be used in ternary conditions.

Examples

Filtering on a field

Here we will query our post collection with postConnection and filter the results by the post title:

{
  postConnection(filter: {title: {startsWith: "Vote"}}) {
    edges {
      node {
        id
        title
        category
      }
    }
  }
}

{
  "data": {
    "postConnection": {
      "edges": [
        {
          "node": {
            "id": "content/posts/voteForPedro.json",
            "title": "Vote For Pedro",
            "category": "politics"
          }
        }
      ]
    }
  }
}

Filtering on a field with the IN operator

Here we will query our post collection with postConnection and filter the results so that only members of the specified category are returned:

{
  postConnection(filter: {category: {in: ["politics"]}}) {
    edges {
      node {
        id
        title
        category
      }
    }
  }
}

{
  "data": {
    "postConnection": {
      "edges": [
        {
          "node": {
            "id": "content/posts/voteForPedro.json",
            "title": "Vote For Pedro",
            "category": "politics"
          }
        }
      ]
    }
  }
}

Filtering on a date range

Here we will query our post collection with postConnection and filter the results so that only posts with a date between the specified range are returned:

{
  postConnection(filter: {date: {after: "2022-06-01T07:00:00.000Z", before: "2022-06-30T07:00:00.000Z"}}) {
    edges {
      node {
        id
        title
        category
      }
    }
  }
}

{
  "data": {
    "postConnection": {
      "edges": [
        {
          "node": {
            "id": "content/posts/voteForPedro.json",
            "title": "Vote For Pedro",
            "category": "politics"
          }
        }
      ]
    }
  }
}

Filtering on multiple fields

It is possible to filter on multiple fields. Multiple conditions are currently treated as a boolean AND operation. Here we will query our post collection with postConnection and filter the results by category and title:

{
  postConnection(filter: {category: {in: ["politics"]}, title: {startsWith: "Vote"}}) {
    edges {
      node {
        id
        title
        category
      }
    }
  }
}

{
  "data": {
    "postConnection": {
      "edges": [
        {
          "node": {
            "id": "content/posts/voteForPedro.json",
            "title": "Vote For Pedro",
            "category": "politics"
          }
        }
      ]
    }
  }
}

Filtering on a reference

Here we will query our post collection with postConnection, and filtering on the referenced author's name:

{
  postConnection(filter: {author: {author: {name: {eq: "Napolean"}}}}) {
    edges {
      node {
        id
        title
        category
      }
    }
  }
}

{
  "data": {
    "postConnection": {
      "edges": [
        {
          "node": {
            "id": "content/posts/anotherPost.json",
            "title": "Just Another Blog Post",
            "category": "lifestyle"
          }
        },
        {
          "node": {
            "id": "content/posts/nested/anotherPost.json",
            "title": "Just Another Blog Post",
            "category": "lifestyle"
          }
        },
        {
          "node": {
            "id": "content/posts/voteForPedro.json",
            "title": "Vote For Pedro",
            "category": "politics"
          }
        }
      ]
    }
  }
}