# Box

The box classification is given to the following types:

Note

Just like a native checkbox or radio, the box classification uses the checked prop instead of value to set it’s initial state.

The exception to this rule is when the options prop is specified causing it to act more like a select list. In this case, use value to set the initial state.

You can also use v-model in either case.

# Checkbox

# Single checkbox

With a single checkbox, the value of the result is a boolean.

<FormulateInput
  v-model="value"
  type="checkbox"
  label="This is a single checkbox"
/>
value: false

Tip

Notice that the labels of box types come after the input element. You can change this behavior by adding label-position="before" as a prop.

# Multiple checkbox options

Often multiple checkboxes are used to offer a range of selectable options. This can be done with a single FormulateInput and the options prop. The selections are represented as an array.

<FormulateInput
  v-model="value"
  :options="{first: 'First', second: 'Second', third: 'Third', fourth: 'Fourth'}"
  type="checkbox"
  label="This is a label for all the options"
/>
value: []

# Array option syntax

In addition to passing an object of key/value pairs as the option prop, you can alternatively pass an array of objects with value and label properties. Using this syntax you can optionally define an id attribute to be applied to each input.

[
  { value: 'first', label: 'First', id: 'my-first' },
  { value: 'second', label: 'Second' }
]

# Array string syntax 2.5

You can also use a simple array of strings. In this case both the value and the label of the checkboxes will be the string value.

<FormulateInput
  v-model="value"
  :options="['First', 'Second', 'Third', 'Fourth']"
  type="checkbox"
  label="This is a label for all the options"
/>

# Radio

The syntax for radio inputs is identical to checkboxes.

<FormulateInput
  v-model="value"
  :options="{first: 'First', second: 'Second', third: 'Third', fourth: 'Fourth'}"
  type="radio"
  label="This is a label for all the options"
/>
value: second

# Styling box inputs

Checkboxes and radio boxes are notoriously frustrating to style. To assist, Vue Formulate places a <label> element immediately after the <input> tag. This allows for easy sibling selector css rules using the :checked psuedo-class selector. The default snow theme using this technique to style checkboxes and inputs.

input ~ label {
  /* style the label to look like a checkbox */
}
input:checked ~ label {
  /* make the label look like a checked checkbox */
}

If you don't want to use this "decorator" label on your project, you can disbale it by setting the global option useInputDecorators to false:

// Wherever you register Vue Formulate
Vue.use(VueFormulate, {
  useInputDecorators: false
})

# Custom class keys

In addition to all global class keys following are available:

Key Default Description
decorator .formulate-input-decorator A secondary <label> element position immediately after the <input> element for styling “pretty” checkboxes.

String values only

Although Vue Formulate supports non-string values, HTML radio and checkbox inputs only support string values, using integers or booleans as keys will result in unexpected behavior. The only exception to this rule is single checkboxes (no options), which Vue will cast to booleans for you automatically.