Lesson 62: Automatically Create an Auction Transaction After Determining the Winner

Team Wpnzee on July 6, 2026

Objective

In this lesson, the Flipnzee Auctions plugin will automatically create a transaction record immediately after a winning bidder is determined.

Rather than jumping directly into escrow integration, the plugin will first establish an internal transaction layer that stores all the important information required for the remainder of the auction lifecycle.

This approach keeps the plugin modular, makes future integrations easier, and allows support for multiple escrow providers.

What You’ll Learn

In this lesson you will learn how to:

  • Design a transaction workflow for completed auctions.
  • Create a dedicated database table for auction transactions.
  • Automatically generate a transaction after selecting a winner.
  • Link auctions with their corresponding transactions.
  • Record transaction creation in the Activity Log.
  • Build a scalable foundation for escrow integration.

Why This Lesson Matters

Determining the winner is only part of the auction process.

After an auction ends, the marketplace needs to remember:

  • Which auction completed.
  • Who won.
  • Who is selling.
  • Final auction price.
  • Transaction status.
  • Next required action.

Without a transaction record, these details become difficult to manage as the marketplace grows.

Current Workflow

Auction Created
        │
        ▼
Users Place Bids
        │
        ▼
Auction Ends
        │
        ▼
Winner Determined

Workflow After This Lesson

Auction Created
        │
        ▼
Users Place Bids
        │
        ▼
Auction Ends
        │
        ▼
Winner Determined
        │
        ▼
Transaction Created
        │
        ▼
Ready for Escrow

Transaction Information

Each transaction should store information such as:

  • Transaction ID
  • Auction ID
  • Listing ID
  • Seller ID
  • Buyer ID
  • Winning Bid
  • Transaction Status
  • Created Date
  • Updated Date

Suggested Transaction Statuses

Initially, the plugin will support:

  • Pending
  • Awaiting Escrow
  • Escrow Created
  • Payment Received
  • Completed
  • Cancelled

Additional statuses can be added later without changing the overall workflow.

Activity Log Improvements

Whenever a transaction is created, the plugin should automatically record an activity such as:

transaction_created
Auction: 31
Buyer: 2
Amount: ₹55,555,609.00

This provides administrators with a complete audit trail from auction creation through completion.

Why Build Transactions Before Escrow?

Although it may seem tempting to integrate directly with an escrow provider, introducing a transaction layer first offers several advantages:

  • Decouples auction logic from payment providers.
  • Makes future escrow integrations easier.
  • Supports multiple escrow services.
  • Allows manual transaction handling if needed.
  • Simplifies testing during development.

This architecture is commonly used in production marketplace platforms.

Expected Outcome

By the end of this lesson, the Flipnzee Auctions plugin will:

  • Automatically create a transaction after determining a winner.
  • Store all important transaction details in a dedicated database table.
  • Link the transaction with the completed auction.
  • Record the event in the Activity Log.
  • Prepare the plugin for seamless escrow integration in the next lessons.

Estimated Development Time

60–90 minutes

This lesson represents another significant milestone. After it is complete, the auction engine will no longer stop at selecting a winner—it will begin managing the post-auction transaction lifecycle, bringing Flipnzee one step closer to becoming a fully operational online auction marketplace.

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