How to create Strapi entries in Nextjs with a Form (Apollo and GraphQL)

Question

I am trying to create new Strapi entries in Nextjs by submitting a form using Apollo client and GraphQL.

I tried a lot of diffrent things with my limited knowledge and was not able to make it work. While researching the topic I realized that most people are using the "useMutation" hook. It never worked though (also when using "useQuery" for queries). So I used a similar approach as for queries because they work.

queries: client.query | mutations: client.mutate

What I have tried:

// GraphQL that works in the Strapi playground
const TEST1 = gql`
  mutation CreateMitgliedanmeldung($name: String!) {
      createMitgliedanmeldung(data: { name: $name }) {
          data {
              attributes {
                  name
              }
          }
      }
  }`;

  export default function MitgliedWerden() {

    const formState = {
      name: ''
    };

    function updateFormState(key, value) {
      formState[key] = value;
    }

    function submit2() {
      console.log(formState.name);
      client.mutate({
        variables: { name: formState.name },
        mutation: TEST1,
      })
    }

    return (
          
          
             updateFormState('name', e.target.value)} id="name">
            
          
      
    )
  }

The code above creates new entries but there are multiple problems:

Variable "name" is not present in the new entry but can be console logged inside "updateFormState" function (same mutation works fine inside graphql playground)
Form is submitted when page is reloaded/loaded
When submitting the page reloads (this is fine if the other problems are gone)

To fix the reload problem I added the following and called it onSubmit.

// calling this onSubmit instead of submit2 function
const newsubmit = (e) => {
  e.preventDefault();
  submit2()
};

Now submitting or reloading the page does not create a new entry but I get the console.log with the correct value. It seems like the "client.mutate" is broken or can't work in those conditions. I was not able to find a lot about the ".mutate" function from apollo and the more often used "useMutation" hook did not work at all for me. Using "client.query" works fine.

Apollo Client:

import { ApolloClient, InMemoryCache } from "@apollo/client"

const defaultOptions = {
    query: {
        fetchPolicy: "no-cache",
    },
}

const client = new ApolloClient({
    uri: process.env.STRAPI_GRAPHQL_URL,
    headers: { "Authorization": process.env.STRAPI_TOKEN },
    cache: new InMemoryCache(),
    defaultOptions,
});

export default client

Dependencies:

"@apollo/client": "^3.6.9",
"@apollo/react-hooks": "^4.0.0",
"graphql": "^16.5.0",
"graphql-request": "^4.3.0",
"next": "12.2.0",
"react": "^18.2.0",
"react-dom": "^18.2.0",

How to create Strapi entries in Nextjs with a Form (Apollo and GraphQL)

0 Answers