php - 这可以在没有 Alpine Js 的情况下转换为 Livewire 组件或简化为 livewire 组件（标签输入）

Question

我想为标签输入制作一个 Laravel livewire 组件。我在互联网上找到了一个，但很难与 livewire 组件连接。这是产品属性添加页面。我添加了不同的属性和值。所以我尝试使用像 Shopify 网站这样的标签输入。这段代码可以在没有 alpine js 的情况下转换为 livewire 组件，还是可以简化 alpine js 部分以与 livewire 组件兼容？

在此处输入图像描述

    <div class="relative" @keydown.enter.prevent="addTag(textInput)">
        <input x-model="textInput" x-ref="textInput" @input="search($event.target.value)" class="form-control"
            placeholder="Enter some tags">

        <div :class="[open ? 'block' : 'hidden']">
            <div class="absolute left-0 z-40 w-full mt-2">
                <div class="py-1 text-sm bg-white border border-gray-300 rounded shadow-lg">
                    <a @click.prevent="addTag(textInput)"
                        class="block px-5 py-1 cursor-pointer hover:bg-indigo-600 hover:text-white">Add
                        tag "<span class="font-semibold" x-text="textInput"></span>"</a>
                </div>
            </div>
        </div>

        <template x-for="(tag, index) in tags">
            <div class="inline-flex items-center mt-2 mr-1 text-sm bg-indigo-100 rounded">
                <span class="max-w-xs ml-2 mr-1 leading-relaxed truncate" x-text="tag"></span>
                <button @click.prevent="removeTag(index)"
                    class="inline-block w-6 h-8 text-gray-500 align-middle hover:text-gray-600 focus:outline-none">
                    <svg class="w-6 h-6 mx-auto fill-current" xmlns="http://www.w3.org/2000/svg"
                        viewBox="0 0 24 24">
                        <path fill-rule="evenodd"
                            d="M15.78 14.36a1 1 0 0 1-1.42 1.42l-2.82-2.83-2.83 2.83a1 1 0 1 1-1.42-1.42l2.83-2.82L7.3 8.7a1 1 0 0 1 1.42-1.42l2.83 2.83 2.82-2.83a1 1 0 0 1 1.42 1.42l-2.83 2.83 2.83 2.82z" />
                    </svg>
                </button>
            </div>
        </template>
    </div> 

<script>
    function tagSelect() {
        return {
            open: false,
            textInput: '',
            tags: [],
            init() {
                this.tags = JSON.parse(this.$el.parentNode.getAttribute('data-tags'));
            },
            addTag(tag) {
                tag = tag.trim()
                if (tag != "" && !this.hasTag(tag)) {
                    this.tags.push(tag)
                }
                this.clearSearch()
                this.$refs.textInput.focus()
                this.fireTagsUpdateEvent()
            },
            fireTagsUpdateEvent() {
                this.$el.dispatchEvent(new CustomEvent('tags-update', {
                    detail: {
                        tags: this.tags
                    },
                    bubbles: true,
                }));
            },
            hasTag(tag) {
                var tag = this.tags.find(e => {
                    return e.toLowerCase() === tag.toLowerCase()
                })
                return tag != undefined
            },
            removeTag(index) {
                this.tags.splice(index, 1)
                this.fireTagsUpdateEvent()
            },
            search(q) {
                if (q.includes(",")) {
                    q.split(",").forEach(function(val) {
                        this.addTag(val)
                    }, this)
                }
                this.toggleSearch()
            },
            clearSearch() {
                this.textInput = ''
                this.toggleSearch()
            },
            toggleSearch() {
                this.open = this.textInput != ''
            }
        }
    }
</script>

标签： phplaravellaravel-livewirealpine.js

Answer 1

我无法完全按照我的意愿转换上面的代码。但是我可以使用 livewire laravel 组件制作一个标签输入系统。我觉得这段代码可能会帮助某人使用 livewire Laravel 进行标签输入。

//Livewire 组件 (app/Http/Livewire/)

    public $attributeOne = [];
    public $attributeOneTag;
    public $attributeOneTags = [];
    public $attributeOneTagsMerge = [];
    public $attributeOneId;

public function attributeOne()
    {
        $attributeOneTag = trim(str_replace(' ', '', $this->attributeOneTag));

        if (in_array($this->attributeOneTag, $this->attributeOneTags) || $this->attributeOneTag === '') {
            $this->attributeOneTag = '';
            $this->attributeOneId = 'attributeOneId';
            $this->emit('tagfocus');
        } else {
            array_push($this->attributeOneTags, $attributeOneTag);
            $this->attributeOne = array_merge($this->attributeOneTagsMerge, array($this->attributeOneTags));
            $this->attributeOneTag = '';
            $this->attributeOneId = 'attributeOneId';
            $this->emit('tagfocus');
        }
    }

//livewire视图组件（resources/views/Livewire/）

<x-input.select wire:model='attributeOneTag' wire:keydown.enter='attributeOne'  :attribute="$attributeOne" :attributeId="$attributeOneId"/>

//Laravel 组件 (resources/views/components/input/select.blade.php)

@props([
    'error' => null,
    'attribute' => null,
    'attributeId' => null,
])

<input type="text" id="{{ $attributeId }}" class="form-control" {{ $attributes }}>

@isset($attribute)
    @foreach ($attribute as $item)
        @foreach ($item as $key => $value)
            <div class="inline-flex items-center mt-2 mr-1 text-sm bg-indigo-100 rounded">
                <span class="max-w-xs ml-2 mr-1 leading-relaxed truncate">{{ $value }}</span>
                <button wire:click.prevent='remove({{ $key }})'
                    class="inline-block w-6 h-8 text-gray-500 align-middle hover:text-gray-600 focus:outline-none">
                    <svg class="w-6 h-6 mx-auto fill-current" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
                        <path fill-rule="evenodd"
                            d="M15.78 14.36a1 1 0 0 1-1.42 1.42l-2.82-2.83-2.83 2.83a1 1 0 1 1-1.42-1.42l2.83-2.82L7.3 8.7a1 1 0 0 1 1.42-1.42l2.83 2.83 2.82-2.83a1 1 0 0 1 1.42 1.42l-2.83 2.83 2.83 2.82z" />
                    </svg>
                </button>
            </div>
        @endforeach
    @endforeach
@endisset
 
<script>
    document.addEventListener('livewire:load', () => {
        window.livewire.on('tagfocus', inputname => {
            document.getElementById("{{ $attributeId }}").focus();
        })
    });
</script>