Post List View

Overview

The PostsList component is responsible for rendering a list of posts in a feed. It handles the display of individual post items and provides support for infinite scrolling, ensuring smooth loading of new content as the user navigates through the feed. The component integrates with post content, media, header, and footer, offering extensive customization options for styling and functionality.

UI Components

• LMFeedPost
• LMFeedLoader

Data Variables

• feedData: Stores the feed data conforming to LMPostViewData[].

Callbacks

• postLikeHandlerProp: Handles the action when a post is liked.
• savePostHandlerProp: Handles the action when a post is saved or unsaved.
• selectPinPostProp: Handles the action when a post is pinned or unpinned.

For information about more callbacks, click here.

Customisation

The LMFeedContextStyles class allows you to customize the appearance of the LMPostContent. You can set the styles in postListStyle in LMFeedContextStyles.

Property	Type	Description
header	LMFeedHeaderProps	Customization for the header of the post.
footer	LMFeedFooterProps	Customization for the footer of the post.
postContent	LMFeedPostContentProps	Customization for the post content area.
media	LMFeedMediaProps	Customization for media like images, videos, and documents in the post.
noPostView	ViewStyle	Styling for the view when no post is available.
noPostText	TextStyle	Styling for the text displayed when no post is available.
listStyle	ViewStyle	Styling for the overall list view.

Usage Example

info

The PostsList screen can be used by wrapping it inside the UniversalFeed screen, and the selected topcis can be passed as a prop to this screen, so that filtered posts are displayed. The customised callbacks for PostsList screen are passed to UniversalFeed screen and are internally accessed by PostsList screen.

Step 1: Create Custom Screen and Wrapper

• Create a FeedScreenWrapper file which will wrap the FeedScreen within the UniversalFeedContextProvider and PostListContextProvider so that the callbacks becomes accessible inside of the FeedScreen.
• Create postListStyles for customisation and call the setPostListStyles to set the customisation.

FeedScreen

import { PostsList, UniversalFeed } from "@likeminds.community/feed-rn-core";
import { useAppSelector } from "@likeminds.community/feed-rn-core/store/store";

// here, mappedTopics are the selected topics according to which the posts will be shown
const mappedTopics = useAppSelector((state) => state.feed.mappedTopics);

export const SamplePostList = () => {
  const { postLikeHandler, savePostHandler, handleEditPost } =
    usePostListContext();

  // customised postLikeHandler method
  const customPostLike = (postId) => {
    console.log("before like ");
    postLikeHandler(postId);
    console.log("after like", postId);
  };
  // customised savePostHandler method
  const customPostSave = (postId, saved) => {
    console.log("before save");
    savePostHandler(postId, saved);
    console.log("after save", postId, saved);
  };
  // customised handlePinPost method
  const customHandlePin = (postId, pinned) => {
    console.log("before pin select");
    handlePinPost(postId, pinned);
    console.log("after pin select", postId, pinned);
  };

  const postListStyles = {
    header: {
      profilePicture: {
        size: 25,
        fallbackTextBoxStyle: "ProfilePicture",
      },
    },
    showMemberStateLabel: true,
  };

  // universal feed screen customisation
  if (postListStyles) {
    STYLES.setPostListStyles(postListStyles);
  }

  return (
    <UniversalFeed
      postLikeHandlerProp={(id) => customPostLike(id)}
      savePostHandlerProp={(id, saved) => customPostSave(id, saved)}
      selectPinPostProp={(id, pinned) => customHandlePin(id, pinned)}
    >
      <PostsList items={mappedTopics} />
    </UniversalFeed>
  );
};

FeedScreenWrapper

import FeedScreen from "<<path_to_FeedScreen.tsx>>";
import {
  PostListContextProvider,
  UniversalFeedContextProvider,
} from "@likeminds.community/feed-rn-core";

const FeedWrapper = ({ navigation, route }) => {
  return (
    <UniversalFeedContextProvider navigation={navigation} route={route}>
      <PostListContextProvider navigation={navigation} route={route}>
        <FeedScreen />
      </PostListContextProvider>
    </UniversalFeedContextProvider>
  );
};

export default FeedWrapper;

Step 2: Add the Custom Screen in App.tsx

• In your App.tsx, create a Stack.Navigatorin the NavigationContainer wrapped by LMOverlayProvider.
• Add FeedWrapper as a Stack screen in your NavigationContainer.

import {
  UNIVERSAL_FEED,
  LMOverlayProvider,
} from "@likeminds.community/feed-rn-core";
import { NavigationContainer } from "@react-navigation/native";
import { createNativeStackNavigator } from "@react-navigation/native-stack";
import { FeedWrapper } from "<<path_to_CustomisedUniversalFeed.tsx>>";

export const App = () => {
  const Stack = createNativeStackNavigator();
  return (
    <LMOverlayProvider
      myClient={myClient} // pass in the LMFeedClient created
      apiKey={apiKey} // pass in the API Key generated
      userName={userName} // pass in the logged-in user's name
      userUniqueId={userUniqueID} // pass in the logged-in user's uuid
    >
      <NavigationContainer ref={navigationRef} independent={true}>
        <Stack.Navigator screenOptions={{ headerShown: true }}>
          <Stack.Screen name={UNIVERSAL_FEED} component={FeedWrapper} />
        </Stack.Navigator>
      </NavigationContainer>
    </LMOverlayProvider>
  );
};