Introduction

When performing database migrations, especially in multi-tenant environments, it's crucial to ensure all aspects of the schema are correctly applied to each tenant. This post explores a scenario in a Laravel application where PostgreSQL functions were unintentionally dropped during a tenant migration and how they were recovered.

The Problem: Silently Missing Functions

When building a multi-tenant application with Laravel and PostgreSQL, handling data isolation is crucial. One effective approach is to use separate database schemas for each tenant. This provides a high level of isolation, ensuring that data from different tenants remains completely separate. Let's explore how this works in practice within the Reimpact platform.

The Problem: Shared Tables

This post details improvements to error handling within the Reimpact/platform project, focusing on delete operations and providing more specific and informative error messages.

The Problem

Previously, the platform had a generic catch-all for delete errors. This made it difficult to distinguish between expected errors, such as foreign key violations, and unexpected errors, hindering debugging

Introduction

Maintaining data accuracy across all tenants in a multi-tenant application can be challenging. This post explores how to correct an issue where global rates were inadvertently made tenant-specific in a Laravel application, impacting data integrity.

The Problem: Tenant-Scoped Rates

Originally, the rates table was intended to store global rates applicable to all tenants.

In the Reimpact/platform project, we encountered a tricky issue with queue deserialization in our multi-tenant environment. This post details the problem, our investigation, and the solution we implemented.

The Problem

Our application uses a queue to generate reports. A GenerateReportJob is dispatched, serializing the GeneratedReport model.

When working with the Reimpact/platform project, we encountered an issue with large upload deletions that resulted in failures and an unhelpful JSON response. This post describes how we resolved the deletion failure and improved the user experience by displaying a Filament notification instead of a raw JSON page.

The Problem

Deleting a large number of generated reports and calculated data

When developing multi-tenant applications with Laravel, managing database schema updates across tenants can be tricky. This post discusses how to address a common issue: ensuring that all tenant databases have the necessary schema changes after migrations.

The Problem: Missing Columns After Migration

In a multi-tenant Laravel application, each tenant typically has its own database schema.

Introduction

In multi-tenant applications, ensuring data isolation between tenants is paramount. We encountered an issue in our Reimpact/platform project where queue jobs and dashboard caching mechanisms weren't properly respecting the tenant context, leading to errors and potential data leakage.

The Problem: Missing Tenant Context

Two key areas were affected:

1. Queue Jobs:

The platform project is undergoing continuous improvement to enhance its notification system.

The Challenge: Data Structure Evolution

Initially, the notification system stored data in a simple text column. However, as the platform evolved, the need for richer, structured data within notifications became apparent. This required a transition to a more flexible data type.

The Solution:

The Problem

In the Reimpact/platform project, we encountered an issue with how user IDs were handled in the notifications system. Specifically, the notifiable_id column in the notifications table was initially defined as a bigint. This caused problems when we started using UUIDs (Universally Unique Identifiers) for user IDs, particularly with PostgreSQL, as bigint columns cannot store