TypeError: R.state.toLowerCase Is Not A Function

Apr 21, 2025 by ADMIN 49 views

TypeError: r.state.toLowerCase is not a function: A Comprehensive Guide to Resolving the Issue

Introduction

When working with custom components in Home Assistant, it's not uncommon to encounter errors that can be frustrating to resolve. One such error is the TypeError: r.state.toLowerCase is not a function issue, which can occur when using the Paper Buttons Row component. In this article, we'll delve into the details of this error, explore the possible causes, and provide step-by-step solutions to help you resolve the issue.

Understanding the Error

The TypeError: r.state.toLowerCase is not a function error occurs when the toLowerCase() method is called on the state property of an object, but the state property is not a string. This method is typically used to convert a string to lowercase, but in this case, it's being called on a non-string value.

Possible Causes

Based on the provided code snippet and error message, there are a few possible causes for this issue:

Incorrect entity type: The entity property in the YAML snippet is set to light.bedroom_light, which is a light entity. However, the active property is set to unlocked, which is typically used for lock entities. This mismatch in entity type could be causing the error.
Invalid state value: The state property of the entity might be set to a non-string value, such as a boolean or a number. This would cause the toLowerCase() method to fail.
Custom component issue: The Paper Buttons Row component might be the source of the issue. There could be a bug or a misconfiguration in the component that's causing the error.

Step-by-Step Solutions

To resolve the TypeError: r.state.toLowerCase is not a function issue, follow these steps:

Step 1: Verify Entity Type

Ensure that the entity type matches the expected type. In this case, the entity type is set to light.bedroom_light, but the active property is set to unlocked. Change the entity type to lock.front_door to match the expected type.

type: entities
entities:
  - type: custom:paper-buttons-row
    preset: mushroom
    base_config:
      preset: mushroom
    buttons:
      - entity: lock.front_door
        active: unlocked
        styles:
          --pbs-button-rgb-color: red
          --pbs-button-rgb-active-color: green

Step 2: Check State Value

Verify that the state property of the entity is set to a string value. If it's set to a non-string value, update it to a string value.

type: entities
entities:
  - type: custom:paper-buttons-row
    preset: mushroom
    base_config:
      preset: mushroom
    buttons:
      - entity: lock.front_door
        state: "unlocked"
        active: unlocked
        styles:
          --pbs-button-rgb-color: red
          --pbs-button-rgb-active-color: green

Step 3: Update Custom Component

If the issue persists, it's possible that the Paper Buttons Row component is the source of the problem. Update the component to the latest version or try a different custom component.

Conclusion

The TypeError: r.state.toLowerCase is not a function error can be frustrating to resolve, but by following the step-by-step solutions outlined in this article, you should be able to identify and fix the issue. Remember to verify the entity type, check the state value, and update the custom component as needed. With these solutions, you'll be able to resolve the issue and enjoy a seamless Home Assistant experience.

Additional Resources

Home Assistant documentation: Custom Components
Paper Buttons Row component documentation: Paper Buttons Row

Troubleshooting Tips

Check the Home Assistant logs for any additional error messages or clues.
Verify that the custom component is properly configured and updated.
Try a different custom component or update the Paper Buttons Row component to the latest version.
TypeError: r.state.toLowerCase is not a function: Q&A

Introduction

In our previous article, we explored the TypeError: r.state.toLowerCase is not a function error in Home Assistant and provided step-by-step solutions to resolve the issue. However, we understand that sometimes, additional clarification or guidance is needed to overcome specific challenges. In this Q&A article, we'll address some common questions and provide additional insights to help you resolve the issue.

Q: What is the cause of the TypeError: r.state.toLowerCase is not a function error?

A: The TypeError: r.state.toLowerCase is not a function error occurs when the toLowerCase() method is called on the state property of an object, but the state property is not a string. This method is typically used to convert a string to lowercase, but in this case, it's being called on a non-string value.

Q: How do I identify the entity type that's causing the issue?

A: To identify the entity type, check the YAML snippet for the entity property. In the example provided, the entity type is set to light.bedroom_light, but the active property is set to unlocked, which is typically used for lock entities. Update the entity type to match the expected type.

Q: What if I'm using a custom component, and I'm not sure which version is causing the issue?

A: If you're using a custom component, try updating it to the latest version. You can check the Home Assistant documentation or the component's GitHub repository for the latest version. If the issue persists, try a different custom component or reach out to the component's developer for assistance.

Q: How do I check the state value of the entity?

A: To check the state value, verify that the state property of the entity is set to a string value. If it's set to a non-string value, update it to a string value. You can also check the Home Assistant logs for any additional error messages or clues.

Q: What if I've tried all the solutions, and the issue still persists?

A: If you've tried all the solutions and the issue still persists, it's possible that there's a deeper issue with the custom component or Home Assistant configuration. In this case, try reaching out to the Home Assistant community or the custom component's developer for additional assistance.

Q: Can I use a different custom component instead of Paper Buttons Row?

A: Yes, you can use a different custom component instead of Paper Buttons Row. There are many custom components available in Home Assistant that can provide similar functionality. You can check the Home Assistant documentation or the component's GitHub repository for more information.

Q: How do I update the Paper Buttons Row component to the latest version?

A: To update the Paper Buttons Row component to the latest version, follow these steps:

Check the Home Assistant documentation or the component's GitHub repository for the latest version.
Update the component to the latest version using the Home Assistant UI or by editing the YAML file manually.
Restart Home Assistant to apply the changes.

Conclusion

The TypeError: r.state.toLowerCase is not a function error can be frustrating to resolve, but by following the step-by-step solutions and Q&A provided in article, you should be able to identify and fix the issue. Remember to verify the entity type, check the state value, and update the custom component as needed. With these solutions, you'll be able to resolve the issue and enjoy a seamless Home Assistant experience.

Additional Resources

Home Assistant documentation: Custom Components
Paper Buttons Row component documentation: Paper Buttons Row

Troubleshooting Tips

Check the Home Assistant logs for any additional error messages or clues.
Verify that the custom component is properly configured and updated.
Try a different custom component or update the Paper Buttons Row component to the latest version.