Transforming hierarchical data into a flat table view using AngularJS by iterating through the structure

I'm grappling with creating valid tabular markup using AngularJS and struggling to find a solution. While I've come across similar inquiries, none seem to cater specifically to my requirements.

My race result data is organized in the following structure:

{
    "date": "1900-01-01",
    "venue": "Venue",
    "results": {
        "10k": {
            "freestyle": {
                "male": [
                    "...a bunch of individual racer results"
                ],
                "female": [
                    "...a bunch of individual racer results"
                ]
            },
            "classical": {
                "male": [
                    "...a bunch of individual racer results"
                ],
                "female": [
                    "...a bunch of individual racer results"
                ]
            }
        },
        "5k": {
            "freestyle": {
                "male": [
                    "...a bunch of individual racer results"
                ],
                "female": [
                    "...a bunch of individual racer results"
                ]
            },
            "classical": {
                "male": [
                    "...a bunch of individual racer results"
                ],
                "female": [
                    "...a bunch of individual racer results"
                ]
            }
        }
    }
}

Essentially, it's structured as: distance, style, gender, individual racer.

I've managed to render these results into separate tables, but the resulting markup seems overly complicated. The issue I encounter now is the need for an index at the top. Initially, simple anchor links to the H3 IDs in each table sufficed. But now I wish to incorporate export links alongside the on-page table link, presented within a table. I'm unsure of the approach to achieve this. To align every row in the same table requires multiple ng-repeat iterations on essentially "dummy" elements, and I'm uncertain if I can accomplish this while generating valid markup inside a table.

My ideal approach would be...

<tr ng-repeat="(dist, (style, (gender, finishers) in genders) in styles) in race.results">
  <td><a href="#{{dist}}_{{style}}_{{gender}}_results">{{dist}} {{style}} {{gender}}</a></tr>
  <td><a href="#" class="download">CSV</a></td>
</tr>

Since AngularJS mandates attaching all logic to DOM elements, it involves generating excess markup. I stumbled upon a mention of creating a "directive," which seems unfamiliar to me. I'm open to delving into the intricacies of AngularJS, but this scenario should be more straightforward. In a templating system like Twig, this task would be effortless, but I fear I'll have to navigate numerous obstacles to accomplish it with AngularJS.

Is there a simple way to achieve this without overwhelming my controller with all the logic? While I'll explore the directive approach if necessary, I perceive it as a major drawback of AngularJS that could impact my interest in its further exploration.

Answer №1

The main issue you are facing is that ng-repeat is designed to work with arrays of data, not objects. Attempting to loop through objects of data will not yield the desired results. It is recommended to either modify your data structure or manually code your template to accommodate the hierarchical levels.

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