Resolving Cannot find control with path Error When Initializing Form Array in Angular 13

Learn how to fix the `Cannot find control with path` error while initializing a Form Array with existing objects in Angular 13. Discover the necessary adjustments in both HTML and TypeScript for a seamless experience.
---

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Cannot find control with path error while Initializing Form Array With existing array of multiple objects in angular 13

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Resolving Cannot find control with path Error When Initializing Form Array in Angular 13

If you're diving into Angular and keen on implementing Reactive Forms, you may come across an error that can be quite perplexing. The error reads: Cannot find control with path: 'variable- 0 - id'. This often occurs when you're trying to initialize a Form Array with an existing array consisting of multiple objects. In this guide, we will break down the root of this error and provide a clear, step-by-step solution.

Understanding the Problem

When creating dynamic forms in Angular, especially with FormArray, it's crucial that you properly set up your controls and ensure they're referenced correctly within both your HTML and TypeScript files. The error you’re encountering usually indicates that the form control is not properly linked to the form structure you’ve defined, or that the controls are being accessed incorrectly.

Step-by-Step Solution

Step 1: Refactoring the TypeScript Code

In your TypeScript code, make sure you revise the getForm() method to ensure it returns the correct control type from the FormArray.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Adjusting the HTML Structure

In your HTML file, avoid using brackets around the formControlName directive. This is crucial because including brackets could lead Angular to interpret the names as variables rather than strings, thus causing issues.

[[See Video to Reveal this Text or Code Snippet]]

What Changed?: Removing the brackets around formControlName allows Angular to recognize name and value as strings, correctly linking them to the form controls.

Additional Context

Initializing FormArray with Existing Data

In your ngOnInit, ensure you are correctly pushing data into your FormArray as follows:

[[See Video to Reveal this Text or Code Snippet]]

This code sets up the FormArray with existing fruit data, allowing the template to correctly display and interact with these controls.

Conclusion

With these adjustments made in your TypeScript and HTML files, you should be able to resolve the Cannot find control with path error while initializing a Form Array in Angular 13. Taking care of your form control configurations and understanding how Angular resolves form data is crucial for building dynamic forms effectively.

Now that you've learned how to troubleshoot and fix this common issue, you're on your way to mastering Angular forms. Happy coding!