AngularJS: Organizing Controllers Horizontally Within ngRepeat

My data consists of a table with 100 rows, each representing a complex object that is an instance of a specific type. User interactions trigger operations on these objects individually, with each row having unique operations independent of the others.

$scope.list = [] // List of instances created from factory function

Each object maintains its state through its own instance with getters, setters, and row-specific logic. With one controller for the entire table and 100 individual instances, I am considering implementing row-level controllers.

By using row-level controllers, there would be a total of 101 controllers (100 row level, 1 table level) for 100 rendered objects in the table, allowing me to handle view-related logic for each object within the respective controller rather than in the factory instance.

I am concerned about performance implications and whether this pattern is optimal. Would using controllers inside ng-repeat be advisable? Your feedback on this approach would be appreciated.

Answer №1

Is it wise to nest controllers within an ng-repeat structure in Angular? This question arises when considering whether a separate controller should be assigned to each of the 100 "objects" being generated in the loop. The answer, however, is not straightforward. It really depends on the specific scenario. For instance, it may be beneficial in cases where these "objects" are actually individual pages dynamically loaded using ng-include. In such situations, having a dedicated controller for each page could prove advantageous, especially if they serve different functions. On the other hand, there are instances where this approach is ill-advised - like when using ng-repeat on a <select> tag with its options represented by <option> elements. Here, creating a controller for every <option> would likely be unnecessary, particularly with a high quantity such as 100. Any functionality achievable through inner controllers could often be accomplished more efficiently in alternative ways or within the outer controller.

In terms of performance considerations, the creation of 100 controllers is unlikely to pose the most significant bottleneck on your website.

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