Step Form - First Step With `isEnabled=false`

by ADMIN 46 views

Bug Description

When loading a multi-step form where the first step is disabled, no step is rendered. This issue arises from the registerStep action in the store, which registers the disabled step as the current step, causing the rendering of subsequent steps to fail.

Codesandbox

You can reproduce this issue by visiting the following codesandbox: https://codesandbox.io/p/sandbox/hfjppt?file=%2Fsrc%2Findex.tsx%3A16%2C1

To Reproduce

  1. In a multi-step form, set isEnabled to false for the first FormizStep.
  2. Load the page.

Expected Behavior

This step should not be rendered, but the following one in order should be rendered.

Screenshots

Image

Additional Context

The issue arises from the registerStep action in the store. When a step is not enabled, it is still registered as the form.currentStepName, which messes with the rendering of the steps.

Code Snippet

registerStep: (stepName, { label, order = 0, isEnabled = true } = {}) =>
  set((state) => {
    return {
      steps: [
        ...state.steps,
        {
          name: stepName,
          label,
          isSubmitted: false,
          isVisited: false,
          order,
          isEnabled,
        },
      ].sort((stepA, stepB) => stepA.order - stepB.order),
      form: {
        ...state.form,
        currentStepName: state.form.currentStepName ?? stepName, // <- HERE
      },
    };
  }),

Proposed Solution

To fix this issue, we can add a safety check to ensure that the initialStepName is not a disabled step. We can also modify the computation for the values isFirstStep and isLastStep to only consider enabled steps.

Code Snippet

// formInterfaceSelector
...isFormStateSubscribed(
  "isFirstStep",
  state.steps.find((step) => step.isEnabled && step.name === currentStep?.name),
  stateSubscription
),
...isFormStateSubscribed(
  "isLastStep",
  state.steps.find((step) => step.isEnabled && step.name === currentStep?.name),
  stateSubscription
),

Explanation

By adding a safety check to ensure that the initialStepName is not a disabled step, we can prevent the rendering of subsequent steps from failing. Additionally, by modifying the computation for the values isFirstStep and isLastStep to only consider enabled steps, we can ensure that the correct step is rendered as the first or last step.

Conclusion

In conclusion, the issue arises from the registerStep action in the store, which registers the disabled step as the current step, causing the rendering of subsequent steps to fail. By adding a safety check and modifying the computation for the values isFirstStep and isLastStep, we can fix this issue and ensure that the correct step is rendered as the first or last step.

Step-by-Step Solution

  1. Add a safety check to ensure that the initialStepName is not a disabled step.
  2. Modify the computation for the values isFirstStep and isLastStep to only consider enabled steps.
  3. Update the registerStep action in the store to prevent the registration of disabled steps as the current step.

Code Snippet

registerStep: (stepName, { label, order = 0, isEnabled = true } = {}) =>
  set((state) => {
    if (!isEnabled) return state;
    return {
      steps: [
        ...state.steps,
        {
          name: stepName,
          label,
          isSubmitted: false,
          isVisited: false,
          order,
          isEnabled,
        },
      ].sort((stepA, stepB) => stepA.order - stepB.order),
      form: {
        ...state.form,
        currentStepName: state.form.currentStepName ?? stepName,
      },
    };
  }),

Explanation

By adding a safety check to ensure that the initialStepName is not a disabled step, we can prevent the registration of disabled steps as the current step. Additionally, by modifying the computation for the values isFirstStep and isLastStep to only consider enabled steps, we can ensure that the correct step is rendered as the first or last step.

Conclusion

Q: What is the issue with the first step in a multi-step form?

A: The issue arises when the first step in a multi-step form is disabled. In this case, no step is rendered, and the form fails to load correctly.

Q: What is the cause of this issue?

A: The cause of this issue is the registerStep action in the store, which registers the disabled step as the current step, causing the rendering of subsequent steps to fail.

Q: How can I reproduce this issue?

A: To reproduce this issue, follow these steps:

  1. Create a multi-step form with a disabled first step.
  2. Load the page.

Q: What is the expected behavior?

A: The expected behavior is that the first step should not be rendered, but the following one in order should be rendered.

Q: How can I fix this issue?

A: To fix this issue, you can add a safety check to ensure that the initialStepName is not a disabled step. You can also modify the computation for the values isFirstStep and isLastStep to only consider enabled steps.

Q: What is the proposed solution?

A: The proposed solution involves adding a safety check to ensure that the initialStepName is not a disabled step. Additionally, the computation for the values isFirstStep and isLastStep should be modified to only consider enabled steps.

Q: How can I implement the proposed solution?

A: To implement the proposed solution, follow these steps:

  1. Add a safety check to ensure that the initialStepName is not a disabled step.
  2. Modify the computation for the values isFirstStep and isLastStep to only consider enabled steps.
  3. Update the registerStep action in the store to prevent the registration of disabled steps as the current step.

Q: What are the benefits of the proposed solution?

A: The benefits of the proposed solution include:

  • Preventing the registration of disabled steps as the current step.
  • Ensuring that the correct step is rendered as the first or last step.
  • Improving the overall performance and functionality of the multi-step form.

Q: Are there any potential drawbacks to the proposed solution?

A: There are no potential drawbacks to the proposed solution. However, it is essential to ensure that the safety check is implemented correctly to prevent any issues with the multi-step form.

Q: How can I test the proposed solution?

A: To test the proposed solution, follow these steps:

  1. Create a multi-step form with a disabled first step.
  2. Load the page and verify that the first step is not rendered.
  3. Verify that the following steps are rendered correctly.

Q: What are the next steps after implementing the proposed solution?

A: After implementing the proposed solution, you can:

  • Verify that the multi-step form is functioning correctly.
  • Test the form with different scenarios and edge cases.
  • Make any necessary adjustments to the form to ensure that it meets the requirements.