Apollo GraphQL - How to get data recorded by mutation from the cache store?

Question

I am developing an application with React-Native and using GraphQL as REST in the server-side. I have authentication layer in my application and I would like to achieve reading data that I got from the mutation query from the server.

This is signIn method passed to props :

 const login = graphql(LoginMutation, { props: ({ mutate }) => ({ login: (user) => mutate({ variables: { email: user.email, password: user.password }, refetchQueries: [{ query: fetchShop }], update: (proxy, { data: { signIn } }) => { console.log("USSER : " + JSON.stringify(signIn)) const query = gql` { currentUser { id email jwt __typename } } `; try { proxy.writeQuery({ query: query, data: signIn }) } catch (error) { console.log("Error occured due to the followig error at write query : "+error) } //data.user.push(mutationResult.signIn); //proxy.writeQuery({query,data}) } }), }), }); 

This is my signIn mutation :

import gql from 'graphql-tag';

export default gql`
mutation SignIn($email : String!,$password : String!){
    signIn(email : $email, password : $password){
        id
        email
        name
        jwt
    }
}
`;

I am saving authentication token inside the AsyncStorage from React-Native library. What I would like to do is fetching userInformation from the store. I do not have any problem reading root queries from the cache store.

I looked at deep of client props provided by Apollo-client. I can see the user data inside there. It is under some property called ROOT_MUTATION under the store. ( I can share the props data )

I am using readQuery but it throws a warning for "Missing field in currentUser in { "id" : "……..", "email":"asdasds","name":"ajdasdasd","jwt":token

It still does not insert currentUser query to the ROOT_QUERIES to the props.client.

Do you have an idea about how to achieve this goal ?

Answer 1

Finally, I have achieved my goal. Here the methods I have used :

First method is the signIn mutation :

 const login = graphql(LoginMutation, { props: ({ mutate }) => ({ login: (user) => mutate({ variables: { email: user.email, password: user.password }, refetchQueries: [{ query: fetchShop }], update: (proxy, { data: { signIn } }) => { console.log("USSER : " + JSON.stringify(signIn)) const query = gql` { user{ id email jwt __typename } } `; proxy.writeQuery({query : query , data : {user : signIn}}) } }), }), }); 

And somewhere in your code ; you can read data from the store, the user in this case, in the way at below :

 const { client } = this.props; console.log(client.store); try { const { user } = client.readQuery({ query: gql` { user{ id email name __typename } } ` }) console.log("User : "+JSON.stringify(user)) } catch (error) { console.log("Error occured at reading user from the cache due to the following err : " + error); }