Tips for resolving the [vue/no-use-v-if-with-v-for] warning in Vue

I am encountering an issue with a div element that supports v-for and v-if. The output is correct, however, there is a warning that I find quite annoying:

[vue/no-use-v-if-with-v-for] The 'prit_type_ids' variable inside the 'v-for' directive should be replaced with a computed property that returns a filtered array instead. It is not recommended to mix 'v-for' with 'v-if'.

I tried adding a block of code to my .eslintrc.js file to address this warning, as mentioned in the following source:

Source: https://github.com/vuejs/eslint-plugin-vue/blob/master/docs/rules/no-use-v-if-with-v-for.md#wrench-options

Is my implementation in the right place? Or did I miss something?

rules: {
// allow debugger during development
'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
"vue/no-use-v-if-with-v-for": ["error", {
    "allowUsingIterationVar": true
  }],
}

Although the codes are functioning correctly, I am still seeing the warning even after adding an entry to the rules.

If anyone could provide guidance on how to remove this warning, I would greatly appreciate it.

Answer №1

To selectively turn off eslint rules within your <template> section, simply insert an HTML comment as shown below:

<!-- eslint-disable vue/no-use-v-if-with-v-for,vue/no-confusing-v-for-v-if -->

Alternatively, you can use the following structure:

<!-- eslint-disable -->

... place code that may violate linting rules here ...

<!-- eslint-enable -->

Answer №2

To disable the rule in your eslintrc configuration, you should do the following:

rules: {
    // allow debugger during development
    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
    "vue/no-use-v-if-with-v-for": "off"
}

For more information, you can visit https://eslint.org/docs/user-guide/configuring#configuring-rules

If you have set "allowUsingIterationVar": true and it is not working, it may be because you have already specified "error" in the array literal syntax, which enables the rule according to eslint config guidelines. As explained on the referenced page, the first item in the array always determines the severity of the rule.

In the example configuration provided above, I am simply using a string to turn off the rule like this:

"vue/no-use-v-if-with-v-for": "off"

Answer №3

While I realize you are seeking guidance on how to bypass this warning, it's important to note that addressing the issue could prove more advantageous for others:

The warning serves a purpose, as it alerts you to potential performance issues. It would be wise to heed the advice of the linter and opt for a computed property instead, as it will likely improve efficiency due to its caching capabilities.

https://v2.vuejs.org/v2/guide/computed.html#Computed-Caching-vs-Methods

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