# Custom show field

# On the front side

# Creating the Vue component

Example of custom sharp field:

<template>
    <div>
        Name: {{ value }}
        <i class="fa" :class="icon"></i>
    </div>
</template>

<script>
    export default {
        props: {
            value: String, // field value
            icon: String,   // custom added props (given in field definition)
        },
    }
</script>

# Exposed Props

Prop Description
value value of the field, required
fieldKey field key in the show
emptyVisible boolean determined by the ->setShowIfEmpty() method, true by default
... All other props given in the field definition

# Listened events

Event Description Parameters
visible-change Update the field visibility Boolean

# Register the custom field

Add sharp-plugin npm package to your project:

npm install -D sharp-plugin

# Sharp plugin file

Add a separated .js file in your project to register fields components :

sharp-plugin.js

import Sharp from 'sharp-plugin';
import ShowTitle from './components/ShowTitle.vue';


Vue.use(Sharp, {
    customFields: {
        'title': ShowTitle
    }
})

Important: The key must be 'title' for FIELD_TYPE = "custom-title"

Vue is exposed to the window scope, it's the current Vue version used by sharp (cf. package.json).

WARNING

It's not recommended to use other Vue plugins in this file because it may change the behavior of the Sharp front-end.

# Add to Laravel Mix

webpack.mix.js

mix.js('/resources/assets/js/sharp-plugin.js', '/public/js')

WARNING

The file name must be sharp-plugin.js in order to ensure Sharp will find it.

You can .version() this JS file if you want to.

# On the back side

# Activate custom fields in config

// config/sharp.php

"extensions" => [
   "activate_custom_fields" => true
],

// ...

# Write the show field class and formatter

Next step is to build your show field class. It must extend Code16\Sharp\Show\Fields\SharpShowField.

Here's an example:

class SharpCustomShowFieldTitle extends SharpShowField
{
    const FIELD_TYPE = "custom-title";

    protected int $level = 1;

    public static function make(string $key)
    {
        return new static($key, static::FIELD_TYPE);
    }

    public function setTitleLevel(int $level): self
    {
        $this->level = $level;

        return $this;
    }

    protected function validationRules()
    {
        return [
            "level" => "required|integer|min:1|max:5",
        ];
    }

    public function toArray(): array
    {
        return parent::buildArray([
            "level" => $this->level,
        ]);
    }
}

A few things to note:

  • The FIELD_TYPE const must be "custom-" + your custom field name, defined on the front side.
  • To respect the Sharp API, you must define a static make function with at least the field key; this function must call the parent constructor, passing the $key and the FIELD_TYPE.
  • validationRules() implementation is optional, but advised.
  • the toArray() function is mandatory, and must call parent::buildArray() with additional attributes.

# Use it

Next step is using the new show field:

in some Code16\Sharp\Show\SharpShow subclass:

function buildShowFields()
{
    $this->addField(
        SharpCustomShowFieldTitle::make("name")
            ->setLevel(2)
    );
}