How to query graphQL with variables from React-Native? - react-native

Question

I can't find the problem in my code when trying to query with variables from react-native. A simple Hello World! is working.
The render:
render() {
return (
<AppContext.Consumer>
{context => {
const{ userID,employeeID,salonID,currentDay,serviceTime}=context.state
return (
<Query
query={query}
variables={{userID:userID,employeeID:employeeID,salonID:salonID,day:currentDay,serviceTime:serviceTime}}
>
{(response, error) => {
console.log(`response: ${response.data.listOfAppointments}`);
console.log(`EMPL: ${response.data.employeeInfo}`);
console.log(`\helo: ${response.data.hello}`);
return (
<Grid>
<Col>
<MyHeader
navigation={this.props.navigation}
title={context.state.currentDay
.format("DD.MM.YYYY")
.toString()}
/>
{!response.data.listOfAppointments? (
<CircularProgress />
) : (
<ScheduleList data={response.data.listOfAppointments} />
)}
</Col>
</Grid>
);
}}
</Query>
);
}}
</AppContext.Consumer>
);
}
The Query:
const query =gql`
query Query($userID:String!,$employeeID:String!,$salonID:String!,$day:Int!,$serviceTime:Int){
hello
listOfAppointments(
userID: $userID
employeeID: $employeeID
salonID: $salonID
day: $day
serviceTime: $serviceTime
) {
start
end
status
disabled
}
employeeInfo(employeeID: $employeeID
salonID: $salonID){
token
name
ID
notifyWhenCreated
notifyWhenDeleted
salonName
}
}
`;
The schemas and types:
If I delete listOfAppointments,employeeInfo and the part where I declare the variables the hello is working.
Otherwise it's giving me status code: 400
react-native log-android is not throwing anything.
If I try to console.log() the result it's undefined.
Thanks!

Answer 1

A status code of 400 usually means the query itself is invalid. It could be that the query has a syntax error, or is somehow not passing validation. To get the detailed response from the server, you can either 1) observe the actual response from the server in the network tab of your browser or 2) capture the error from the component itself.
<Query /* props */>
({ data, error }) => {
console.log(error)
return null
}
</Query>
Note that we're only dealing with the first parameter in the render props function and just using destructuring to get its data and error properties.
As far as I can tell, your query does not have any syntax errors, so I suspect the issue is that some or all of the variables you are passing in are in fact undefined, which will cause your query to blow up if any of them are marked as non-null inside the query.