use fragment to update cache instead of direct write

src/components/projects/FundProject.jsx

@@ -18,7 +18,7 @@ import { toBN } from '../../utils/conversions'
 import { getTokenLabel, getTokenByAddress } from '../../utils/currencies'
 import MediaView from '../base/MediaView'
 import StatusTextField from '../base/TextField'
-import { getProfileById } from './queries'
+import { getProfileById, pledgeLifetimeReceived } from './queries'
 import styles from './styles/FundProject'
 import Loading from '../base/Loading'
 import BreadCrumb from '../base/BreadCrumb'
@@ -36,8 +36,17 @@ const addProjectSucessMsg = response => {
   return `Project created with ID of ${idProject}, will redirect to your new project page in a few seconds`
 }
 const optimisticUpdate = (client, pledgesInfo, weiAmount) => {
+  const { __typename } = pledgesInfo
   const updatedLifetimeReceived = toBN(weiAmount).add(toBN(pledgesInfo.lifetimeReceived)).toString()
-  client.writeData({ data: { [`PledgesInfo:${pledgesInfo.id}`]:  {...pledgesInfo, lifetimeReceived: updatedLifetimeReceived } } })
+  const id = `${__typename}:${pledgesInfo.id}`
+  client.writeFragment({
+    id,
+    fragment: pledgeLifetimeReceived,
+    data: {
+      lifetimeReceived: updatedLifetimeReceived,
+      __typename
+    }
+  })
 }
 const SubmissionSection = ({ classes, projectData, projectId, profileData, startPolling, client }) => {
   const { account, enableEthereum, openSnackBar, prices } = useContext(FundingContext)
@@ -78,7 +87,7 @@ const SubmissionSection = ({ classes, projectData, projectId, profileData, start
             openSnackBar('success', 'Funding Confirmed')
           })
           .catch(e => {
-            openSnackBar('error', 'An error has occured with the transaction')
+            openSnackBar('error', 'An error has occured')
             console.log({e})
           })
           .finally(() => {

src/components/projects/queries.js

@@ -1,6 +1,22 @@
 import { gql } from 'apollo-boost'
 
+export const pledgeLifetimeReceived = gql`
+fragment PledgeLifetimeReceived on PledgesInfo {
+  lifetimeReceived
+}
+`
+export const pledgesInfosFields = gql`
+${pledgeLifetimeReceived}
+fragment PledgesInfoFields on PledgesInfo {
+  id
+  ...PledgeLifetimeReceived
+  token
+}
+`
+
 export const getProfileById = gql`
+${pledgesInfosFields}
+
 query Profile($id: ID!) {
   profile(id: $id) {
     id
@@ -12,10 +28,7 @@ query Profile($id: ID!) {
     name
     creationTime
     pledgesInfos {
-      id
-      token
-      lifetimeReceived
-      balance
+      ...PledgesInfoFields
     }
     projectInfo {
       id
@@ -36,6 +49,8 @@ query Profile($id: ID!) {
 }
 `
 export const getProjects = gql`
+${pledgesInfosFields}
+
 query Projects($type: String! = "PROJECT"){
   profiles(first: 5, where: {type: $type, projectInfo_not: null}) {
     id
@@ -55,9 +70,7 @@ query Projects($type: String! = "PROJECT"){
       goal
     }
     pledgesInfos{
-      id
-      lifetimeReceived
-      token
+     ...PledgesInfoFields
     }
   }
 }