React Apollo: dynamically update GraphQL query from Component state

Question

I have a component that displays GraphQL query results using react-apollodecorator syntax . The request accepts a parameter that I want to set dynamically based on the state of the component.

Consider the following simplified example:

import * as React from ‘react’;
import { graphql } from ‘react-apollo’;
import gql from ‘graphql-tag’;

const myQuery = gql`
    query($active: boolean!) {
        items(active: $active) {

        }
    }
`;

@graphql(myQuery)
class MyQueryResultComponent extends React.Component {
    public render() {
        return <div>
            <input type="checkbox" /* other attributes and bindings */ />
            {this.props.data.items}
        <div>;
    }
}

When I click on the checkmark, I want to resend the request, dynamically setting the attribute activeto myQuery, depending on the state of the checkbox. I omitted the handler and bindings of this flag for brevity, but how can I get the request to resend when the state changes?

Answer 1

, prop , .

react-apollo docs :  

, , codeandbox API- GraphQL.

: https://codesandbox.io/embed/PNnjBPmV2

Data.js

import React from 'react';
import PropTypes from 'prop-types';
import gql from 'graphql-tag';
import { graphql } from 'react-apollo';

const Data = ({ data }) =>
  <div>
    <h2>Data</h2>
    <pre style={{ textAlign: 'left' }}>
      {JSON.stringify(data, undefined, 2)}
    </pre>
  </div>;

Data.propTypes = {
  active: PropTypes.bool.isRequired,
};

const query = gql`
  query SearchAuthor($id: Int!) {
    author(id: $id) {
      id
      firstName
      lastName
    }
  }
`;

export default graphql(query, {
  options(ownProps) {
    return {
      variables: {
        // This is the place where you can 
        // access your component props and provide
        // variables for your query
        id: ownProps.active ? 1 : 2,
      },
    };
  },
})(Data);

App.js

import React, { Component } from 'react';
import Data from './Data';

class App extends Component {
  constructor(props) {
    super(props);

    this.state = {
      active: false,
    };

    this.handleChange = this.handleChange.bind(this);
  }

  handleChange() {
    this.setState(prevState => ({
      active: !prevState.active,
    }));
  }

  render() {
    const { active } = this.state;

    return (
      <div>
        <h1>App</h1>
        <div>
          <label>
            <input
              type="checkbox"
              checked={active}
              onChange={this.handleChange}
            />
            If selected, fetch author <strong>id: 1</strong>
          </label>
        </div>
        <Data active={active} />
      </div>
    );
  }
}

export default App;