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Node Model | Gatsby

Gatsby exposes its internal data store and query capabilities to GraphQL field resolvers on context.nodeModel.

Get all nodes in the store, or all nodes of a specified type (optionally with limit/skip). Returns slice of result as iterable and total count of nodes.

You can directly return its entries result in your resolver.

• args

  • query Object

    Query arguments (e.g. limit and skip)

  • type string | GraphQLOutputType

    Type

• pageDependencies Object

  Optional page dependency information.

  • path string

    The path of the page that depends on the retrieved nodes’ data

  • connectionType string

    Mark this dependency as a connection

Promise<Object>

Object containing { entries: GatsbyIterable, totalCount: () => Promise<number> }

const { entries, totalCount } = await findAll({ type: `MyType` })


const { entries, totalCount } = await findAll({
  type: `MyType`,
  query: {
    sort: { date: `desc` },
    filter: { published: { eq: false } },
  },
})


const { entries, totalCount } = await findAll({ type: `MyType` })

const count = await totalCount()
const filteredEntries = entries.filter(entry => entry.published)


const filteredEntries = entries.filter(entry => entry.published)
return Array.from(posts).length

Get one node in the store. Only returns the first result. When possible, always use this method instead of fetching all nodes and then filtering them. findOne is more performant in that regard.

• args

  • query Object

    Query arguments (e.g. filter). Doesn’t support sort, limit, skip.

  • type string | GraphQLOutputType

    Type

• pageDependencies Object

  Optional page dependency information.

  • path string

    The path of the page that depends on the retrieved nodes’ data

  • connectionType string

    Mark this dependency as a connection

const node = await findOne({
  type: `MyType`,
  query: { filter: { title: { eq: `My Title` } } },
})

Finds top most ancestor of node that contains passed Object or Array

• obj Object | Array

  Object/Array belonging to Node object or Node object

• predicate nodePredicate

  Optional callback to check if ancestor meets defined conditions

Node

Top most ancestor if predicate is not specified or first node that meet predicate conditions if predicate is specified

Utility to get a field value from a node, even when that value needs to be materialized first (e.g. nested field that was connected via @link directive)

const blogPostNode = {
  author: 'author-id-1',
  
}

getFieldValue(blogPostNode, 'author.name')

Get a node from the store by ID and optional type.

• args Object

  • id string

    ID of the requested node

  • type string | GraphQLOutputType

    Optional type of the node

• pageDependencies Object

  Optional page dependency information.

  • path string

    The path of the page that depends on the retrieved nodes’ data

  • connectionType string

    Mark this dependency as a connection

getNodeById({ id: `123` })

getNodeById({ id: `123`, type: `MyType` })

getNodeById({ id: `123` }, { path: `/` })

Get nodes from the store by IDs and optional type.

• args Object

  • ids string[]

    IDs of the requested nodes

  • type string | GraphQLOutputType

    Optional type of the nodes

• pageDependencies Object

  Optional page dependency information.

  • path string

    The path of the page that depends on the retrieved nodes’ data

  • connectionType string

    Mark this dependency as a connection

getNodesByIds({ ids: [`123`, `456`] })


getNodesByIds({ ids: [`123`, `456`], type: `MyType` })


getNodesByIds({ ids: [`123`, `456`] }, { path: `/` })

Get the names of all node types in the store.

Replace the cache either with the value passed on (mainly for tests) or an empty new Map.

• map undefined | null | FiltersCache

  This cache caches a set of buckets (Sets) of Nodes based on filter and tracks this for each set of types which are actually queried. If the filter targets id directly, only one Node is cached instead of a Set of Nodes. If null, don’t create or use a cache.

Adds link between inline objects/arrays contained in Node object and that Node object.

Given a result, that’s either a single node or an array of them, track them using pageDependencies. Defaults to tracking according to current resolver path. Returns the result back.

• pageDependencies Object

  Optional page dependency information.

  • path string

    The path of the page that depends on the retrieved nodes’ data

  • connectionType string

    Mark this dependency as a connection

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