'compose not exported from react-apollo
I'm following a graphql tutorial on youtube (https://www.youtube.com/watch?v=ed8SzALpx1Q at about 3hr 16min) and part of it uses compose from "react-apollo". However, I'm getting an error because the new version of react-apollo does not export this.
I read online that I need to replace import { compose } from "react-apollo" with import { compose } from "recompose" but doing that produces the error TypeError: Cannot read property 'loading' of undefined I've also read that I should replace the import from react-apollo with import * as compose from "lodash" but when I do this I get other errors, saying that × TypeError: lodash__WEBPACK_IMPORTED_MODULE_2__(...) is not a function
App.js:
import React from "react";
import ApolloClient from "apollo-boost";
import { ApolloProvider } from "react-apollo";
import BookList from "./components/BookList";
import AddBook from "./components/AddBook";
//apollo client setup
const client = new ApolloClient({
uri: "http://localhost:4000/graphql"
});
function App() {
return (
<ApolloProvider client={client}>
<div className="main">
<h1>My Reading List</h1>
<BookList />
<AddBook />
</div>
</ApolloProvider>
);
}
export default App;
queries.js:
import { gql } from "apollo-boost";
const getBooksQuery = gql`
{
books {
name
id
}
}
`;
const getAuthorsQuery = gql`
{
authors {
name
id
}
}
`;
const addBookMutation = gql`
mutation {
addBook(name: "", genre: "", authorId: "") {
name
id
}
}
`;
export { getAuthorsQuery, getBooksQuery, addBookMutation };
AddBooks.js:
import React, { Component } from "react";
import { graphql } from "react-apollo";
import { compose } from "recompose";
// import * as compose from "lodash";
import { getAuthorsQuery, addBookMutation } from "../queries/queries";
class AddBook extends Component {
state = {
name: "",
genre: "",
authorId: ""
};
displayAuthors = () => {
let data = this.props.data;
if (data.loading) {
return <option>loading authors...</option>;
} else {
return data.authors.map(author => {
return (
<option key={author.id} value={author.id}>
{author.name}
</option>
);
});
}
};
submitForm(e) {
e.preventDefault();
console.log(this.state);
}
render() {
return (
<form onSubmit={this.submitForm.bind(this)}>
<div className="field">
<label>Book name: </label>
<input
type="text"
onChange={e => {
this.setState({ name: e.target.value });
}}
/>
</div>
<div className="field">
<label>Genre: </label>
<input
type="text"
onChange={e => {
this.setState({ genre: e.target.value });
}}
/>
</div>
<div className="field">
<label>Author: </label>
<select
onChange={e => {
this.setState({ authorId: e.target.value });
}}
>
<option>Select author</option>
{this.displayAuthors()}
</select>
</div>
<button>+</button>
</form>
);
}
}
export default compose(
graphql(getAuthorsQuery, { name: "getAuthorsQuery" }),
graphql(addBookMutation, { name: "addBookMutation" })
)(AddBook);
I expected compose to be imported from react-apollo and to take the query and mutation and make them available inside of AddBook's props, so I can use them in the displayAuthors() and submitForm() funtions, but instead I get the error that it is not exported from react-apollo, and when I try the suggested solutions I found online I get the other errors mentioned above.
Solution 1:[1]
compose was removed from React Apollo 3 (see the Breaking Changes).
Now, to use compose, use lodash's flowRight.
Install flowright:
yarn add lodash.flowright
Replace in your code:
import { compose } from 'react-apollo'
by
import {flowRight as compose} from 'lodash';
Solution 2:[2]
Below is how I solved this issue with my project:
install lodash.flowright
npm install lodash.flowright
import it in your AddBook.js or in the file that you want to use compose
import compose from 'lodash.flowright'
Solution 3:[3]
This can be solved by ;
npm install lodash.flowright
import * as compose from 'lodash.flowright';
Because compose is literally the same as flowRight, the apollo team decided to reduce the bundle size by removing it.
For more info read the breaking changes section here https://github.com/apollographql/react-apollo/blob/e9190fac891dd7af3a1690a5d2a1305953fd5a6f/Changelog.md#breaking-changes
Solution 4:[4]
The problem is not with compose. whenever we compose 2 or more queries we don't get "data" property you should try
let data = this.props.getAuthorsQuery;
Solution 5:[5]
same here I try to follow his tutorial "https://www.youtube.com/watch?v=rHw0_A4SJxo&list=PL4cUxeGkcC9iK6Qhn-QLcXCXPQUov1U7f&index=31", and stuck at the compose site here is how I fix it: - install lodash : npm lodash - import flowRight :
import React, { Component } from 'react';
//import { compose } from "recompose";
import {flowRight as compose} from 'lodash';
import {graphql} from 'react-apollo';
import {getAuthorsQuery,addBookMutation} from '../queries/queries';
Solution 6:[6]
import React, {Component} from 'react';
import {getAuthersQuery , AddBookMutation } from '../quearies/quearies'
import { gql } from 'apollo-boost'
import { graphql } from 'react-apollo'
import {flowRight as compose} from 'lodash';
Solution 7:[7]
This Is how I got it working without using Compose.
I used useQuery to Query the authors and then used graphql to Mutate. Simply avoiding to nest Queries, which required using compose.
Its just a way to get around Compose (avoiding) and get the tutorials going, time is of great essence
import {useQuery} from "@apollo/react-hooks";
import React, {useState} from "react";
import {getAuthorsQuery, addBookMutation} from "../queries/queries.js";
import { graphql } from "react-apollo";
// import { flowRight as compose } from "lodash";
// import {* as compose} from "lodash.flowRight";
const AddBook = (props) => {
const [formData, setFormData] = useState({
name : "",
genre : "",
authorId : ""
});
const authorsData = useQuery(getAuthorsQuery);
function displayAuthors(){
console.log(authorsData)
if(authorsData.loading){
return( <option disabled >Loading Authors...</option> )
}
else{
return( authorsData.data.authors.map(author => {
return( <option key={author.id} value={author.id}>{author.name}</option>)
}))
}
}
function submitForm(e){
e.preventDefault();
console.log(formData);
}
return(
<form id="add-book" onSubmit={(e) => submitForm(e)}>
<div className="field" >
<label>Book Name:</label>
<input type="text" onChange={(e) => setFormData({name :
e.target.value})}/>
</div>
<div className="field" >
<label>Genre:</label>
<input type="text" onChange={(e) => setFormData({genre :
e.target.value})}/>
</div>
<div className="field" >
<label>Author:</label>
<select onChange={(e) => setFormData({authorId : e.target.value})}>
<option>Select Author</option>
{displayAuthors()}
</select>
</div>
<button>+</button>
</form>
)}
export default graphql(addBookMutation)(AddBook);
I hope this help you finish up you graphql tutorials, but if you are looking into solving compose issues? Well I'm also struggling with that.
Solution 8:[8]
wow i am also doing the same project from the net ninja youtube tutorial and got the same error actually the version of react-oppollo is changed with the passage of time
Solution 9:[9]
You don't have to use lodash at least for this problem
Simply nest graphql function
export default graphql(addBookMutation)(graphql(getAuthorsQuery)(AddBook))
You can refer this
Sources
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