Commit 626418fc authored by Natalia Tepluhina's avatar Natalia Tepluhina Committed by Phil Hughes

Resolve "Extend Apollo Client section in GraphQL dev guide"

parent f2f33145
...@@ -19,6 +19,14 @@ To save duplicated clients getting created in different apps, we have a ...@@ -19,6 +19,14 @@ To save duplicated clients getting created in different apps, we have a
[default client][default-client] that should be used. This setups the [default client][default-client] that should be used. This setups the
Apollo client with the correct URL and also sets the CSRF headers. Apollo client with the correct URL and also sets the CSRF headers.
Default client accepts two parameters: `resolvers` and `config`.
- `resolvers` parameter is created to accept an object of resolvers for [local state management](#local-state-with-apollo) queries and mutations
- `config` parameter takes an object of configuration settings:
- `cacheConfig` field accepts an optional object of settings to [customize Apollo cache](https://github.com/apollographql/apollo-client/tree/master/packages/apollo-cache-inmemory#configuration)
- `baseUrl` allows us to pass a URL for GraphQL endpoint different from our main endpoint (i.e.`${gon.relative_url_root}/api/graphql`)
- `assumeImmutableResults` (set to `false` by default) - this setting, when set to `true`, will assume that every single operation on updating Apollo Cache is immutable. It also sets `freezeResults` to `true`, so any attempt on mutating Apollo Cache will throw a console warning in development environment. Please ensure you're following the immutability pattern on cache update operations before setting this option to `true`.
## GraphQL Queries ## GraphQL Queries
To save query compilation at runtime, webpack can directly import `.graphql` To save query compilation at runtime, webpack can directly import `.graphql`
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