Components rendered by v-for are failing to display on the production server, however, they are

Struggling to dynamically generate bootstrap tabs (b-tabs) using vue's v-for. Everything functions perfectly on my local server, but once pushed to production, the tabs fail to render.

After utilizing the vue chrome debugger to verify that my backend data aligns with expectations and finding no console errors, it is puzzling why this issue persists. Even my colleagues can replicate a functional version locally, contrasted by an unsuccessful deployment in a production environment.

In an attempt to resolve the problem, I experimented with manually adding the preferencesDialogTab component. Surprisingly, the manual addition works flawlessly; however, none of the v-for components appear anywhere. In fact, upon inspection of the DOM elements, they are entirely absent.

<div v-for="cat in allcategories">
    <b-tab :title="cat">
        <PreferenceDialogTab :preferencesString="cat"/&>
    </b-tab>
</div>

The code sifts through a vast dataset to extract distinct categories. Subsequently, it generates a bootstrap tab for each category, showcasing all objects within the tab corresponding to the current category.

Alas, while smoothly performing on my local machine, the production scenario paints a different picture. Although the page loads—accompanied by other visible headers—the tab creation process remains dormant. The discrepancy begs the question: what could be triggering this anomaly?

Answer №1

When utilizing the v-for directive in Vue, it is essential to assign a unique Vue key to each primary element/component within the loop. Additionally, the b-tab component must be a direct child of the b-tabs component; you cannot enclose them individually within a <div>:

<b-tabs>
    <b-tab v-for="(cat, idx) in allcategories" :title="cat" :key="idx">
        <PreferenceDialogTab :preferencesString="cat"/>
    </b-tab>
</b-tabs>

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