Improve TopicList/PostList rendering

app/src/containers/Post.js

@@ -24,7 +24,7 @@ class Post extends Component {
   componentDidMount() {
     const { addPeerDB, userAddress, postData } = this.props;
     if(postData.userAddress !== userAddress )
-      addPeerDB(postData.fullOrbitAddress);
+      addPeerDB(postData.userAddress, 'posts');
   }
 
   render() {
@@ -180,7 +180,8 @@ function getPostSubject(state, props){
       return orbitData.subject;
   }
   else{
-    const db = orbit.peerDatabases.find(db => db.fullAddress === postData.fullOrbitAddress);
+    const db = orbit.peerDatabases.find(db =>
+      (db.userAddress === postData.userAddress) && (db.name === 'posts'));
     if(db && db.store){
       const localOrbitData = db.store.get(postID);
       if (localOrbitData)
@@ -199,7 +200,8 @@ function getPostContent(state, props){
       return orbitData.content;
   }
   else{
-    const db = orbit.peerDatabases.find(db => db.fullAddress === postData.fullOrbitAddress);
+    const db = orbit.peerDatabases.find(db =>
+      (db.userAddress === postData.userAddress) && (db.name === 'posts'));
     if(db && db.store){
       const localOrbitData = db.store.get(postID);
       if (localOrbitData)
@@ -211,7 +213,7 @@ function getPostContent(state, props){
 
 const mapDispatchToProps = dispatch => bindActionCreators({
   navigateTo: location => push(location),
-  addPeerDB: fullOrbitAddress => addPeerDatabase(fullOrbitAddress)
+  addPeerDB: (userAddress, name) => addPeerDatabase(userAddress, name)
 }, dispatch);
 
 function mapStateToProps(state, ownProps) {

app/src/containers/PostList.js

@@ -5,7 +5,6 @@ import { drizzle } from '../index';
 
 import Post from './Post';
 import PlaceholderContainer from './PlaceholderContainer';
-import { determineDBAddress } from '../utils/orbitUtils';
 
 const contract = 'Forum';
 const getPostMethod = 'getPost';
@@ -17,8 +16,7 @@ class PostList extends Component {
     this.getBlockchainData = this.getBlockchainData.bind(this);
 
     this.state = {
-      dataKeys: [],
-      dbAddresses: []
+      dataKeys: []
     };
   }
 
@@ -31,8 +29,8 @@ class PostList extends Component {
   }
 
   getBlockchainData() {
-    const { dataKeys, dbAddresses } = this.state;
-    const { drizzleStatus, postIDs, contracts } = this.props;
+    const { dataKeys } = this.state;
+    const { drizzleStatus, postIDs } = this.props;
 
     if (drizzleStatus.initialized) {
       const dataKeysShallowCopy = dataKeys.slice();
@@ -45,17 +43,6 @@ class PostList extends Component {
           );
           fetchingNewData = true;
         }
-        else if (!dbAddresses[postID]){
-          const fetchedPostData = contracts[contract][getPostMethod][dataKeys[postID]];
-          if(fetchedPostData) {
-            const dbAddress = await determineDBAddress('posts', fetchedPostData.value[0]);
-            const dbAddressesShallowCopy = dbAddresses.slice();
-            dbAddressesShallowCopy[postID] = dbAddress;
-            this.setState({
-              dbAddresses: dbAddressesShallowCopy
-            });
-          }
-        }
       });
 
       if (fetchingNewData) {
@@ -67,7 +54,7 @@ class PostList extends Component {
   }
 
   render() {
-    const { dataKeys, dbAddresses } = this.state;
+    const { dataKeys } = this.state;
     const { postIDs, contracts, focusOnPost, recentToTheTop } = this.props;
 
     const posts = postIDs.map((postID, index) => {
@@ -75,13 +62,9 @@ class PostList extends Component {
       if(dataKeys[postID])
         fetchedPostData = contracts[contract][getPostMethod][dataKeys[postID]];
 
-      const dbAddress = dbAddresses[postID];
-      if(fetchedPostData && dbAddress) {
-        const userAddress = fetchedPostData.value[0]; //Also works as an Orbit Identity ID
-
+      if(fetchedPostData) {
         const postData = {
-          userAddress,
-          fullOrbitAddress: `/orbitdb/${dbAddress}/posts`,
+          userAddress: fetchedPostData.value[0],  //Also works as an Orbit Identity ID
           userName: fetchedPostData.value[1],
           timestamp: fetchedPostData.value[2]*1000,
           topicID: fetchedPostData.value[3]

app/src/containers/Topic.js

@@ -14,7 +14,7 @@ class Topic extends Component {
   componentDidMount() {
     const { dispatch, userAddress, topicData } = this.props;
     if(topicData.userAddress !== userAddress )
-      dispatch(addPeerDatabase(topicData.fullOrbitAddress));
+      dispatch(addPeerDatabase(topicData.userAddress, 'topics'));
   }
 
   render() {
@@ -84,7 +84,8 @@ function getTopicSubject(state, props){
       return orbitData.subject;
   }
   else{
-    const db = orbit.peerDatabases.find(db => db.fullAddress === topicData.fullOrbitAddress);
+    const db = orbit.peerDatabases.find(db =>
+      (db.userAddress === topicData.userAddress) && (db.name === 'topics'));
     if(db && db.store){
       const localOrbitData = db.store.get(topicID);
       if (localOrbitData)

app/src/containers/TopicList.js

@@ -5,7 +5,6 @@ import { drizzle } from '../index';
 
 import Topic from './Topic';
 import PlaceholderContainer from './PlaceholderContainer';
-import { determineDBAddress } from '../utils/orbitUtils';
 
 const contract = 'Forum';
 const getTopicMethod = 'getTopic';
@@ -17,8 +16,7 @@ class TopicList extends Component {
     this.getBlockchainData = this.getBlockchainData.bind(this);
 
     this.state = {
-      dataKeys: [],
-      dbAddresses: []
+      dataKeys: []
     };
   }
 
@@ -31,8 +29,8 @@ class TopicList extends Component {
   }
 
   getBlockchainData() {
-    const { dataKeys, dbAddresses } = this.state;
-    const { drizzleStatus, topicIDs, contracts } = this.props;
+    const { dataKeys } = this.state;
+    const { drizzleStatus, topicIDs } = this.props;
 
     if (drizzleStatus.initialized) {
       const dataKeysShallowCopy = dataKeys.slice();
@@ -44,17 +42,6 @@ class TopicList extends Component {
             .cacheCall(topicID);
           fetchingNewData = true;
         }
-        else if (!dbAddresses[topicID]){
-          const fetchedTopicData = contracts[contract][getTopicMethod][dataKeys[topicID]];
-          if(fetchedTopicData) {
-            const dbAddress = await determineDBAddress('topics', fetchedTopicData.value[0]);
-            const dbAddressesShallowCopy = dbAddresses.slice();
-            dbAddressesShallowCopy[topicID] = dbAddress;
-            this.setState({
-              dbAddresses: dbAddressesShallowCopy
-            });
-          }
-        }
       });
 
       if (fetchingNewData) {
@@ -66,7 +53,7 @@ class TopicList extends Component {
   }
 
   render() {
-    const { dataKeys, dbAddresses } = this.state;
+    const { dataKeys } = this.state;
     const { topicIDs, contracts } = this.props;
 
     const topics = topicIDs.map(topicID => {
@@ -74,12 +61,9 @@ class TopicList extends Component {
       if(dataKeys[topicID])
         fetchedTopicData = contracts[contract][getTopicMethod][dataKeys[topicID]];
 
-      const dbAddress = dbAddresses[topicID];
-      if(fetchedTopicData && dbAddress) {
-        const userAddress = fetchedTopicData.value[0]; //Also works as an Orbit Identity ID
+      if(fetchedTopicData) {
         const topicData = {
-          userAddress,
-          fullOrbitAddress: `/orbitdb/${dbAddress}/topics`,
+          userAddress: fetchedTopicData.value[0], //Also works as an Orbit Identity ID
           userName: fetchedTopicData.value[1],
           timestamp: fetchedTopicData.value[2]*1000,
           numberOfReplies: fetchedTopicData.value[3].length

app/src/redux/actions/orbitActions.js

@@ -17,10 +17,11 @@ function updateDatabases(type, orbitdb, topicsDB, postsDB) {
   };
 }
 
-function addPeerDatabase(fullAddress) {
+function addPeerDatabase(userAddress, dbName) {
   return {
     type: ADD_PEER_DATABASE,
-    fullAddress
+    userAddress, //User's Ethereum address - it's also his Orbit Identity Id
+    dbName  //e.g. topics or posts
   };
 }
 

app/src/redux/reducers/orbitReducer.js

@@ -52,7 +52,13 @@ const orbitReducer = (state = initialState, action) => {
       return {
         ...state,
         peerDatabases:[...state.peerDatabases,
-          {fullAddress: action.fullAddress, store: action.store}]
+          {
+            fullAddress: action.fullAddress,
+            userAddress: action.userAddress,
+            name: action.fullAddress.split('/')[3],
+            store: action.store
+          }
+        ]
       };
     case UPDATE_PEERS:
       return {

app/src/redux/sagas/orbitSaga.js

@@ -2,7 +2,7 @@ import { all, call, put, select, take, takeEvery, takeLatest } from 'redux-saga/
 import isEqual from 'lodash.isequal';
 import { forumContract, getCurrentAccount } from './web3UtilsSaga';
 import {
-  createDatabases,
+  createDatabases, determineDBAddress,
   loadDatabases,
   orbitSagaOpen
 } from '../../utils/orbitUtils';
@@ -52,16 +52,19 @@ function* getOrbitDBInfo() {
 let peerOrbitAddresses = new Set();
 
 function* addPeerDatabase(action) {
-  const fullAddress = action.fullAddress;
+  const userAddress = action.userAddress;
+  const dbName = action.dbName;
   const size = peerOrbitAddresses.size;
-  peerOrbitAddresses.add(fullAddress);
+  peerOrbitAddresses.add(userAddress + '/' + dbName);
 
   if(peerOrbitAddresses.size>size){
     const { orbitdb } = yield select(state => state.orbit);
     if(orbitdb){
+      const dbAddress = yield call(determineDBAddress,dbName, userAddress);
+      const fullAddress = `/orbitdb/${dbAddress}/${dbName}`;
       const store = yield call(orbitSagaOpen, orbitdb, fullAddress);
       yield put({
-        type: PEER_DATABASE_ADDED, fullAddress, store: store
+        type: PEER_DATABASE_ADDED, fullAddress, userAddress, store
       });
     }
   }

app/src/utils/orbitUtils.js

@@ -54,8 +54,8 @@ async function loadDatabases() {
   store.dispatch(updateDatabases(DATABASES_LOADED, orbitdb, topicsDB, postsDB));
 }
 
-async function determineDBAddress(name, identityId){
-  return (await getOrbitDB().determineAddress(name, 'keyvalue', {
+async function determineDBAddress(dbName, identityId){
+  return (await getOrbitDB().determineAddress(dbName, 'keyvalue', {
     accessController: {
       write: [identityId]}
     }