**Finding the Index of a Table Row in Vue-Tables-2**

Recently, I came across some vue code that utilizes vue-tables-2. The table in question is quite simple and looks like this...

<v-client-table :data="myRows" :columns="columns" :options="options">
    <div slot="columnA" slot-scope="{row}">
        <input type="text" v-model.trim="row.someKey" class="form-control">
    </div>
    <div slot="etc"> ...

One thing that caught my attention was the slot-scope="{row}", rather than just slot-scope="row". Upon inspecting the rows, I found that each row had a structure like this...

 { row: { keyA: value, keyB: value, etc }, index: 1 },
 { row: { keyA: value, keyB: value, etc }, index: 2 }, etc

It seems like the original developer "destructured" the row object to save on typing, hence the use of

v-model.trim="row.row.someKey"
.

Now, I'm tasked with adding a new column that requires both the row data and the array index of that particular row, as shown below...

    <div slot="columnZ" slot-scope="row">
        <p>col value is {{row.row.someOtherKey}} and index is {{row.index-1}}<p> 
    </div>

However, I find using row.row no more convenient than the initial setup, and the row.index provided starts from 1 instead of the usual zero-based array indexing.

My assumption is that these issues stem from vue-tables-2. Is there a way to work around these limitations while still utilizing the package? Specifically, can I access the row data without the extra layer of "row", and is there a method to obtain a zero-based array index for each row?

Answer №1

Is there a way to extract the row data from the package without it being nested within another "row"?

It's a bit of a yes and no situation. Slot props, which are shared between the component and its slot, are always passed as a single object. However, you have control over what you name this object.

For example, in the case of slot="columnZ" slot-scope="row" (note that this syntax is deprecated - the current syntax is v-slot:columnZ="row")

  1. You can choose a different name for the object - it doesn't have to be "row", it could be "props" or anything else
  2. What you receive is an entire object -
    { row: { keyA: value, keyB: value, etc }, index: 1 }

However, you can use destructuring to break down the object into individual components - v-slot:columnZ="{ row, index }"

This is similar to operations in plain JavaScript:

const obj = { row: { keyA: 1, keyB: "asdasd" }, index: 1 }
// The variables `row` and `index` here match the names of the properties
const { row, index } = obj

console.log(row)
console.log(index)

// You can also rename the variable
const { row: user } = obj
console.log(user)

If you need a zero-based index and it's not included by default, there may be little you can do about it unless the component allows for customization. One workaround would be to add a zero-based index key to each row if necessary.

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