feed-datasource-expert

Name: feed-datasource-expert
Availability: InStock
Author: flutter-it

Build paginated reactive Flutter feeds with FeedDataSource and PagedFeedDataSource.

188|18|Updated Apr 28, 2023

Search Tags:#flutter #feed #event-bus #infinite-scroll #paginated-list #proxy-lifecycle #value-notifier

Ready to run

npx skills add https://github.com/flutter-it/watch_it --skill feed-datasource-expert

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: feed-datasource-expert
Source: https://github.com/flutter-it/watch_it/tree/main/skills/feed-datasource-expert
Command: npx skills add https://github.com/flutter-it/watch_it --skill feed-datasource-expert

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Pattern for building paginated, reactive list/feed widgets in Flutter using ValueNotifiers and Commands, including proxy lifecycle management across the feed's life-cycle.

Core Features & Use Cases

Base FeedDataSource supports non-paged, finite data handling with safe mutation and item counting.
PagedFeedDataSource enables cursor-based pagination, auto-pagination when nearing the end, and separate loading states for initial loads and next pages.
Proxy lifecycle integration with a manager to create and release proxies, plus event-bus driven feed updates and easy creation via createOnce.

Quick Start

Create a feed source in the owning widget with createOnce and connect it to a FeedView, then trigger the initial load via updateDataCommand.

Frequently Asked Questions about feed-datasource-expert

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I build a paginated feed in Flutter with infinite scroll?▼

To build a paginated feed in Flutter, use PagedFeedDataSource to enable cursor-based pagination and auto-pagination when nearing the end of the list. It separates initial load states from next-page loading to manage infinite scroll efficiently.

How do I update a Flutter feed list reactively using event-bus?▼

Update a Flutter feed list reactively by driving feed updates through an event-bus. The pattern integrates ValueNotifiers with Commands to handle event-driven data mutations while maintaining safe proxy lifecycles.

How do I manage proxy lifecycle safely in a Flutter feed widget?▼

Manage proxy lifecycle safely in a Flutter feed widget by using a dedicated proxy manager to create and release proxies. The createOnce method ensures proxies are bound correctly across the feed's life-cycle.

Does this paginated feed pattern support both finite and infinite list handling?▼

Yes, this paginated feed pattern supports both finite and infinite list handling. Base FeedDataSource manages non-paged finite data with safe mutations, while PagedFeedDataSource handles cursor-based pagination for infinite lists.

What is the best way to separate initial load and next page loading in Flutter?▼

The best way to separate initial load and next page loading in Flutter is using PagedFeedDataSource. It specifies distinct update and next-page commands, ensuring isolated loading states for initial data fetches versus subsequent pagination.

Why do I need separate commands for updating data and loading the next page?▼

Separate commands for updating data and loading the next page are needed to prevent state conflicts. This separation isolates initial load operations from pagination triggers, ensuring auto-pagination near the list end behaves safely.