react-apollo mutation doesn't refetch - graphql

Question

I have a component RecipeList and another AddRecipe.after adding a recipe it should be redirected to RecipeList and all items be displayed.
here is the code of AddRecipe Component.
import React ,{Component}from 'react'
import { Mutation } from "react-apollo";
import {ADD_RECIPE} from '../../mutations';
import Error from '../Error';
import {withRouter} from 'react-router-dom';
import {GET_ALL_RECIPIES} from '../../queries'
class AddRecipe extends Component {
...
onSubmit(event,addRecipe){
event.preventDefault();
addRecipe().then(
({data})=>
{
this.props.history.push("/")
}
)
}
render (){
const{name,category,description,instruction,username} = this.state;
return(<div className="App">
<h2>Add recipe</h2>
<Mutation
mutation={ADD_RECIPE}
variables={{name,category,description,instruction,username}}
update={(cache, {data:{addRecipe}}) => {
const {getAllRecipes} = cache.readQuery({ query: GET_ALL_RECIPIES });
cache.writeQuery({
query:GET_ALL_RECIPIES,
data:{getAllRecipes:getAllRecipes.concat[addRecipe]}
})
}} >
{(addRecipe, {data,loading,error})=>
(<form className="form" onSubmit={event=>this.onSubmit(event,addRecipe)}>
<input type="text" name="name" onChange={this.handleChange.bind(this)} placeholder="recipe name" value={name}/>
<select name="category" value="breakfast" id="" onChange={this.handleChange.bind(this)} value={category}>
<option value="breakfast">breakfast</option>
<option value="lunch">lunch</option>
<option value="dinner">dinner</option>
<option value="snack">snack</option>
</select>
<input type="text" name="description" onChange={this.handleChange.bind(this)} placeholder="recipe description" value={description}/>
<textarea name="instruction" id="instruction" cols="30" rows="10" onChange={this.handleChange.bind(this)} value={instruction}> </textarea>
<button type="submit" className="button-primary" disabled = {loading || this.validateForm()}>submit</button>
{error && <Error error={error}/>}
</form>)
}
</Mutation>
</div>)
}
my add recipe mutation is :
import gql from 'graphql-tag';
//RECIPE QUERY
export const GET_ALL_RECIPIES =gql`
query {
getAllRecipes{
name
_id
category
}
}
`
and finally get recipe list query is :
import gql from "graphql-tag";
export const GET_RECIPE_ITEM =gql`
query($id:ID!){
getRecipeItem(_id:$id){
_id
name
category
description
instruction
createdDate
likes
username
}
}`
after submitting form and adding recipe I expect that
first component is redirected to recipe list and
second component the list of recipes includes the newly added recipe .
but I see the old list that does not contain any of newly added recipes and for displaying new components I should refresh the page .

Answer 1

Apollo Client caches data for performance improvements and it does not refetch a list of your recipes because it already in cache.
In order to overcome this, you can either change fetchPolicy from default cache-first to cache-and-network or network-only but I don't recommend this in your case or refetch getAllRecipes query after addRecipe mutation like so:
<Mutation
mutation={ADD_RECIPE}
variables={{name,category,description,instruction,username}}
refetchQueries=['getAllRecipes']
>
...
</Mutation>