Using Vue to pass an array of rules to a child component

Question

Using Vue to pass an array of rules to a child component

Currently, I am passing a set of props called "propSet" to a child component. These props are computed and detect an 'edit mode' boolean that changes accordingly.

The "propSet" defines the following form input props: color, filled, dense, outlined, readonly, required, and rules.

All the props work fine, except for "rules". Whenever a child component uses the 'editMode == true' configuration of "propSet," I receive the following error message in the console:

[Vue warn]: Invalid prop: type check failed for prop "rules". Expected Array, got Object

I have tried various solutions, including:

Adding type validation to the Child Component for the rules array
- props: ['propSet'] //original
- ```
props: { propSet: Array } //updated
```
Using Object.entries() to convert the object to an array
- ```
var rulesSet = Object.entries(this.rules) 
```

Adjusting the configuration of rules

 //original  
 rules: {
    required: (v) => !!v || "This field is required",
    autoComplete: (v) => !!(v && v.length) || "This field is required",
  },

 //updated
 rules: [{
   required: (v) => !!v || "This field is required"},
   autoComplete: (v) => !!(v && v.length) || "This field is required",
  }],

Despite reading the documentation for Props multiple times and exploring related sources such as the Vuetify API, I haven't found a solution yet. I've also checked several Stack Overflow questions regarding Vue.js, props, and components without success.

I suspect there might be something obvious that I'm overlooking. For simplicity's sake, here is a codepen with a different set of props that showcases the issue:

Pass-Rules-As-Prop

javascript vue.js vuetify.js

Answer 1

Answer №1

Ensure that the rules prop of Vuetify's Text field component is structured as an array:

Vuetify provides a straightforward validation process through the rules prop. This prop requires an array that includes various types such as function, boolean, and string. Upon each change in the input value, every element within the array will undergo validation. Functions are designed to take the current v-model as an argument and should return either true / false or a string with an error message.

Visit: Text field component - Vuetify

However, it appears that within your parent's data structure, you have defined the rules as an object containing your validation functions instead of storing them within an array:

    rules: {
      required: (v) => !!v || "This field is required",
      autoComplete: (v) => !!(v && v.length) || "This field is required"
    }

To rectify this issue, modify the structure to match the following format:

    rules: [
      (v) => !!v || "This field is required",
      (v) => !!(v && v.length) || "This field is required"
    ]

Keep in mind that both versions involve declaring anonymous functions. If you prefer retaining the function names for reference purposes, consider utilizing named functions like this:

    rules: [
      function required(v) { return !!v || "This field is required"; },
      function autoComplete(v) { return !!(v && v.length) || "This field is required"; }
    ]

Answer 2

Ensure that the rules prop of Vuetify's Text field component is structured as an array:

Vuetify provides a straightforward validation process through the rules prop. This prop requires an array that includes various types such as function, boolean, and string. Upon each change in the input value, every element within the array will undergo validation. Functions are designed to take the current v-model as an argument and should return either true / false or a string with an error message.

Visit: Text field component - Vuetify

However, it appears that within your parent's data structure, you have defined the rules as an object containing your validation functions instead of storing them within an array:

    rules: {
      required: (v) => !!v || "This field is required",
      autoComplete: (v) => !!(v && v.length) || "This field is required"
    }

To rectify this issue, modify the structure to match the following format:

    rules: [
      (v) => !!v || "This field is required",
      (v) => !!(v && v.length) || "This field is required"
    ]

Keep in mind that both versions involve declaring anonymous functions. If you prefer retaining the function names for reference purposes, consider utilizing named functions like this:

    rules: [
      function required(v) { return !!v || "This field is required"; },
      function autoComplete(v) { return !!(v && v.length) || "This field is required"; }
    ]

Using Vue to pass an array of rules to a child component

Answer №1

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