Скачать или смотреть How to Fix Empty Table Data in AngularJS with ng-repeat

Discover how to resolve issues with data loading in AngularJS using `ng-repeat`. Learn the correct implementation to display data without refreshing the page.
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How to Fix Empty Table Data in AngularJS with ng-repeat

When working with AngularJS, one might encounter a common issue—tables not loading data as expected. This can be especially frustrating when you're trying to pull in data from a PHP backend to display in your web application. In this guide, we'll explore the problem of an empty table and provide a clear solution to get your data loading correctly on page initialization.

The Problem

You have an AngularJS application that fetches data from a PHP script but it's failing to show this data in your HTML table. Although the data successfully loads when you manually trigger the function with a button, the table remains empty when the page first loads.

Here’s a brief overview of your setup:

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

Why the Table Remains Empty

The root cause of your problem is found in the incorrect use of $scope.apply. In AngularJS, if you want the UI to reflect changes made to the scope outside the AngularJS context (like with jQuery’s $.getJSON), you must use $scope.$apply(). Failing to do this means that AngularJS is not aware of the changes made to the $scope.clientes variable, resulting in the empty table.

Key Points:

$scope.applay should be $scope.$apply(), which updates the view-model where changes might not be automatically detected.

Solution: Making Data Load on Page Initialization

To fix this issue, adjust your code to ensure that data is loaded automatically when the page loads. Here’s how you can do that:

Correctly call $apply:
Change $scope.applay; to $scope.$apply();. This tells AngularJS to check for new data and update the view accordingly.

Use ng-init:
Use the ng-init directive to call carregarClientes() when the page initializes. This will automatically load the data.

Updated Code Snippet:

Here’s an updated version of your script:

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

Conclusion

By addressing the use of $scope.$apply() and leveraging the ng-init directive, you can ensure your AngularJS application correctly loads and displays data from your PHP backend when the page first loads. This common issue can be easily resolved with the adjustments provided here, leading to a more efficient and user-friendly experience.

Now go ahead, make these changes in your project, and watch your table populate with the data it was missing!