Previously, in older versions of Vuetify, it was possible to access the headerCell slot and easily add tooltips. You can refer to https://codepen.io/nueko/pen/dZoXeZ for more details.
In the latest version, named slots are used, requiring knowledge of the header name beforehand.
<template v-slot:header.givenname="{ header }">
Is there a method to add tooltips to all headers?
If you're looking to customize table rows, there are two ways you can approach it.
Method 1: Customize the Entire Row
If you want to customize the entire row within the table header, this method could be helpful. However, keep in mind that customizing this way may cause you to lose the default sorting functionality of the v-data-table component.
Example:
<template v-slot:header="{ props: { headers } }">
<thead>
<tr>
<th v-for="h in headers">
<v-tooltip bottom>
<template v-slot:activator="{ on }">
<span v-on="on">{{h.text}}</span>
</template>
<span>{{h.text}}</span>
</v-tooltip>
</th>
</tr>
</thead>
</template>
You can see a working example here: https://codepen.io/onelly/pen/QWWmpZN
Method 2: Customize Each Heading While Maintaining Sorting Functionality
If you prefer to customize each heading individually without sacrificing the sorting functionality, this method is likely more suitable. By utilizing Dynamic Slot Names, you can achieve this easily.
Example:
<template v-for="h in headers" v-slot:[`header.${h.value}`]="{ header }">
<v-tooltip bottom>
<template v-slot:activator="{ on }">
<span v-on="on">{{h.text}}</span>
</template>
<span>{{h.text}}</span>
</v-tooltip>
</template>
Check out a live demo of this implementation here: https://codepen.io/onelly/pen/ExxEmWd
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