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  • 👋Welcome to UI Bakery!
  • 🌟Overview
    • 💡Video intro
    • ✨Main features
    • 🔖Glossary
  • 🛠️Getting started
    • Create an application
    • Build UI
      • Data mocking methods
    • Link components
    • Connect a data source
    • Load data
    • Bind data to UI
    • Transform data with JavaScript
      • Data mapping & transforming
    • Change component data
    • Send a form
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    • Note on debugging
    • Deploy your application & invite users
  • 📌Concepts
    • Components
      • Component basics
      • Component methods
      • Components best practices
        • Input validation
        • Linking a Table to a Form/Detail
        • Using a single Form to add and update data
        • Searching Table based on input value
        • Configuring server-side pagination
        • Managing Date object time zones
        • Role-based Menu component items
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          • Select/Tag field: Utilizing Tag mapper
        • Expanding component to fit screen/container
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      • Unrestricted custom components
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      • Changing theme from the app
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      • Git controls overview
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  • ⚡How-tos
    • File management
      • Working with PDF files
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      • Parsing and sending XML
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      • Adding navigation to application
      • Reading query params from URL
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      • Managing user data with the {{user.email}} variable
      • Using JS libraries
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      • Implementing row-level security
      • Copying to clipboard
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      • Communicating with external sites via Iframe
      • Implementing custom app hotkeys
      • Retrying API with HTTP status code 202
  • 🔎Extras
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      • Environment and release strategy
      • Git in automations
      • Using external Node libraries
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      • Database migration
  • 💻On-premise
    • UI Bakery on-premise
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        • Azure virtual machine
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          • AWS EKS with Fargate
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      • Troubleshooting installation errors
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      • Recommendations
        • Architecture overview
        • UI Bakery in production
        • Resource optimization
        • Running a standalone database instance
        • Generating custom secrets
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      • External analytics
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      • SCIM 2.0
      • Instance API
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      • Health check API
      • Email configuration
      • Google Sheets connection setup
      • Salesforce connection setup
      • Azure blob storage configuration
      • Adding python backend code to existing installation
      • UI Bakery Postgres
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      • Setting up a domain name
      • Configuring custom certificate authority
      • Custom base URL
      • Getting requests to the local network
      • Setting up SSL on Ubuntu
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        • Azure AD OAuth2
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      • Troubleshooting
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      • Automate Bitbucket releases
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  • 📚Reference
    • Data security measures
    • Improving app security
    • ✨AI Assistant
    • List of Components
      • Azure Blob Storage file uploader
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        • How to Highlight Text in a Table Using mark.js
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    • List of Data sources
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    • List of Action steps
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      • SMTP Request
      • SSH Command
      • SQL Query
        • Writing SQL Queries
      • S3 Query
      • Update Row
    • Troubleshooting techniques
    • Performance optimization
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  • Constant re-rendering detected
  • Disable actions execution to debug freezes and redirects

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  1. Reference

Troubleshooting techniques

PreviousUpdate RowNextPerformance optimization

Last updated 7 months ago

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This section describes some common troubleshooting techniques to debug and improve your apps.

Constant re-rendering detected

If you're experiencing performance issues or encountering the "Constant re-renders detected" message, this could point to a cyclic dependency in your app or other performance-related issues:

  • Use of Math.random() or new Date().getTime() in computed component properties: Such declarations generate a new unique value every time UI Bakery re-renders the page. As a result, components produce new state values in component variables like {{ui.input.value}}, which subsequently triggers another re-render. It's advisable to avoid such declarations.

  • Cyclic dependencies in component configurations: For example, you might have two input components where each input references the value of the other input (i.e., {{ui.input.value}}) as its Value property. This setup can lead to continuous re-renders and may significantly impede the app's performance.

  • Infinite cycles in action code: Check for loops like while(true) that might continuously produce new values, leading to persistent re-renders.

  • Improper use of UI Bakery state variables: Utilizing broad scopes, such as {{state}} or {{actions}} in component properties, can prompt UI Bakery to continuously update the page, ensuring it reflects the most recent values. It's recommended to modify these references to point to precise values, like {{state.variableName}}.

Disable actions execution to debug freezes and redirects

To address situations such as:

  • an action redirecting you to another page on a page load

  • an action consuming a lot of resources and freezing the app

you can disable actions execution for debugging purposes. To do so:

  • append the ?uib_skip_actions_execution=1 query parameter in the URL

  • reload the app page

This will activate a special mode where actions can only be executed by clicking the Run action button manually, and will not be executed on Page Load or other component triggers.

This should allow you to fix any issues with your actions. Remember to remove the parameter and reload the page to ensure that the fix is in place. Note that this will not affect the published version of the app.

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