#Filtering data

Each collection in the GraphQL schema has a filter argument which can be used to filter the results. You can filter by any custom field. Each field type supports different operators.

The syntax for filter is based on the mongodb query syntax.

#String fields

query {
  allPost(filter: { id: { in: ["1", "2"] }}) {
    edges {
      node {
        title
      }
    }
  }
}

This example will query nodes where id is 1 or 2.

#Date fields

query {
  allPost(filter: { date: { gte: "2017" }}) {
    edges {
      node {
        title
      }
    }
  }
}

This example will query only nodes where date is greater than or equal to 2017.

#Boolean fields

query {
  allPost(filter: { featured: { eq: true }}) {
    edges {
      node {
        title
        featured
      }
    }
  }
}

This example will query only nodes where featured is true.

#Number fields

query {
  allProduct(filter: { price: { between: [49, 99] }}) {
    edges {
      node {
        title
        price
      }
    }
  }
}

This example will query only nodes with price value between 49 and 99.

#Array fields

query {
  allPost(filter: { keywords: { contains: ["gridsome"] }}) {
    edges {
      node {
        title
        keywords
      }
    }
  }
}

This example will query only nodes which has the gridsomekeyword.