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Vue/vue 활용하기

vue image preview(vue 이미지 미리보기) 컴포넌트 만들기

dhsdb1541@naver.com 2020. 4. 12.

https://codepen.io/loy124/pen/ZEbGQaW

 

vue image preview

...

codepen.io

codepen에도 업로드 해두었다.(테스트 가능)

 

 

 

프로젝트를 진행중에 파일을 업로드하기전 파일 업로드시 이미지 미리보기 를 나타내주는 컴포넌트가 필요해서 제작하게 되었다. 

 

 

 

 

 

 

첫 화면

 

이미지 업로드시(X표를 누를시 삭제된다)

 

 

 

 

 

 

<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://unpkg.com/vue/dist/vue.js"></script>
</head>

<body>
    <div class="main-container">
        <div class="room-deal-information-container">
            <div class="room-deal-information-title">사진 등록</div>
            <div class="room-picture-notice">
                <ul class="room-write-wrapper">
                    <li>
                        사진은 가로로 찍은 사진을 권장합니다. (가로 사이즈 최소 800px)
                    </li>
                    <li>사진 용량은 사진 한 장당 10MB 까지 등록이 가능합니다.</li>

                </ul>
            </div>
            <div class="room-file-upload-wrapper">
                <div v-if="!files.length" class="room-file-upload-example-container">
                    <div class="room-file-upload-example">
                        <div class="room-file-image-example-wrapper">이미지</div>
                        <div class="room-file-notice-item">
                            실사진 최소 3장 이상 등록하셔야 하며, 가로사진을 권장합니다.
                        </div>
                        <div class="room-file-notice-item room-file-notice-item-red">
                            로고를 제외한 불필요한 정보(워터마크,상호,전화번호 등)가 있는 매물은 비공개처리됩니다
                        </div>
                        <div class="room-file-notice-item room-file-upload-button">
                            <div class="image-box">
                                <!-- <div class="image-profile">
            <img :src="profileImage" />
            </div>-->
                                <label for="file">일반 사진 등록</label>
                                <input type="file" id="file" ref="files" @change="imageUpload" multiple />
                            </div>
                        </div>
                    </div>
                </div>
                <div v-else class="file-preview-content-container">
                    <div class="file-preview-container">
                        <div v-for="(file, index) in files" :key="index" class="file-preview-wrapper">
                            <div class="file-close-button" @click="fileDeleteButton" :name="file.number">
                                x
                            </div>
                            <img :src="file.preview" />
                        </div>
                        <div class="file-preview-wrapper-upload">
                            <div class="image-box">
                                <label for="file">추가 사진 등록</label>
                                <input type="file" id="file" ref="files" @change="imageAddUpload" multiple />
                            </div>
                            <!-- <div class="file-close-button" @click="fileDeleteButton" :name="file.number">x</div> -->
                        </div>
                    </div>
                </div>
            </div>
        </div>
        
        </body>

</html>

 

js 파일 

files.file 에는 실제 file의 데이터가 담겨있고

files.preview에는 프리뷰를 활용하기 위해 URL.createobjectURL을 활용해 프리뷰 이미지를 생성하였다.

 

 

   const app = new Vue({
                el: ".main-container",
                data() {
                    return {

                        files: [], //업로드용 파일
                        filesPreview: [],
                        uploadImageIndex: 0 // 이미지 업로드를 위한 변수
                    }
                },
                methods: {
                    imageUpload() {
                        console.log(this.$refs.files.files);

                        // this.files = [...this.files, this.$refs.files.files];
                        //하나의 배열로 넣기
                        let num = -1;
                        for (let i = 0; i < this.$refs.files.files.length; i++) {
                            this.files = [
                                ...this.files,
                                //이미지 업로드
                                {
                                    //실제 파일
                                    file: this.$refs.files.files[i],
                                    //이미지 프리뷰
                                    preview: URL.createObjectURL(this.$refs.files.files[i]),
                                    //삭제및 관리를 위한 number
                                    number: i
                                }
                            ];
                            num = i;
                            //이미지 업로드용 프리뷰
                            // this.filesPreview = [
                            //   ...this.filesPreview,
                            //   { file: URL.createObjectURL(this.$refs.files.files[i]), number: i }
                            // ];
                        }
                        this.uploadImageIndex = num + 1; //이미지 index의 마지막 값 + 1 저장
                        console.log(this.files);
                        // console.log(this.filesPreview);
                    },

                    imageAddUpload() {
                        console.log(this.$refs.files.files);

                        // this.files = [...this.files, this.$refs.files.files];
                        //하나의 배열로 넣기c
                        let num = -1;
                        for (let i = 0; i < this.$refs.files.files.length; i++) {
                            console.log(this.uploadImageIndex);
                            this.files = [
                                ...this.files,
                                //이미지 업로드
                                {
                                    //실제 파일
                                    file: this.$refs.files.files[i],
                                    //이미지 프리뷰
                                    preview: URL.createObjectURL(this.$refs.files.files[i]),
                                    //삭제및 관리를 위한 number
                                    number: i + this.uploadImageIndex
                                }
                            ];
                            num = i;
                        }
                        this.uploadImageIndex = this.uploadImageIndex + num + 1;

                        console.log(this.files);
                        // console.log(this.filesPreview);
                    },
                    fileDeleteButton(e) {
                        const name = e.target.getAttribute('name');
                        this.files = this.files.filter(data => data.number !== Number(name));
                        // console.log(this.files);
                    },
                }
            });

 

css파일

 .main-container {
            width: 1200px;
            height: 400px;
            margin: 0 auto;
        }
        
        .room-deal-information-container {
            margin-top: 50px;
            color: #222222;
            border: 1px solid #dddddd;
        }
        
        .room-deal-information-title {
            text-align: center;
            font-size: 18px;
            line-height: 60px;
            border-bottom: 1px solid #dddddd;
        }
        
        .room-deal-information-content-wrapper {
            min-height: 50px;
            display: flex;
        }
        
        .room-deal-informtaion-content-title {
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 150px;
            background-color: #f9f9f9;
        }
        
        .room-deal-information-content {
            width: 100%;
            font-size: 14px;
        }
        
        .room-deal-option-selector {
            display: flex;
            align-items: center;
            padding: 15px;
        }
        
        .room-deal-option-item {
            width: 100px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid #cccccc;
            border-radius: 5px;
            cursor: pointer;
        }
        
        .room-deal-option-item:last-child {
            margin-left: 10px;
        }
        
        .room-deal-option-notice {
            margin-left: auto;
            font-size: 14px;
            color: #888888;
        }
        
        .room-deal-option-item-deposit {
            margin-left: 10px;
        }
        
        .room-deal-information-wrapper {
            display: flex;
            flex-direction: column;
        }
        
        .room-deal-information-option {
            padding: 10px;
            display: flex;
            align-items: center;
        }
        
        .room-deal-information-option:last-child {
            border-bottom: 1px solid #dddddd;
        }
        
        .room-deal-information-item-type {
            font-size: 13px;
            color: #fff;
            background-color: #61b6e5;
            min-width: 50px;
            height: 26px;
            display: flex;
            justify-content: center;
            align-items: center;
            border-radius: 3px;
        }
        
        .room-deal-information-item-wrapper {
            display: flex;
            align-items: center;
            margin-left: 10px;
            height: 46px;
            width: 100%;
        }
        
        .room-deal-information-item-wrapper>input {
            border: 1px solid #dddddd;
            width: 140px;
            height: 100%;
            padding: 0 15px;
            font-size: 15px;
        }
        
        .room-deal-inforamtion-won {
            margin: 0 10px;
        }
        
        .room-deal-information-example {
            color: #888888;
        }
        
        .room-deal-information-option:not(:first-child) {
            margin-top: 10px;
        }
        
        .room-deal-inforamtion-divide {
            font-size: 22px;
            margin: 0 8px;
            color: #222222;
            font-weight: 100;
        }
        
        .room-deal-close-button-wrapper {
            margin-left: auto;
            cursor: pointer;
        }
        
        .room-deal-close-button {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            background-color: #666666;
            color: rgb(220, 220, 220);
        }
        
        .room-deal-cliked {
            background-color: rgb(235, 235, 235);
            color: rgb(170, 170, 170);
        }
        
        .room-file-upload-example {
            height: 100%;
        }
        
        .room-write-content-container {
            border-top: 1px solid #dddddd;
            min-height: 260px;
        }
        
        .room-picture-notice {
            margin: 20px;
            padding: 20px 40px;
            border: 1px solid #dddddd;
        }
        
        .file-preview-content-container {
            height: 100%;
        }
        
        .room-file-upload-wrapper {
            margin: 20px;
            border: 1px solid #dddddd;
            background-color: #f4f4f4;
            min-height: 350px;
            font-size: 15px;
            color: #888888;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100%;
        }
        
        .room-file-upload-example-container {
            display: flex;
            align-items: center;
            justify-content: center;
            /* height: 100%;
  width: 100%; */
        }
        
        .room-file-image-example-wrapper {
            text-align: center;
        }
        
        .room-file-notice-item {
            margin-top: 5px;
            text-align: center;
        }
        
        .room-file-notice-item-red {
            color: #ef4351;
        }
        
        .image-box {
            margin-top: 30px;
            padding-bottom: 20px;
            text-align: center;
        }
        
        .image-box input[type='file'] {
            position: absolute;
            width: 0;
            height: 0;
            padding: 0;
            overflow: hidden;
            border: 0;
        }
        
        .image-box label {
            display: inline-block;
            padding: 10px 20px;
            background-color: #232d4a;
            color: #fff;
            vertical-align: middle;
            font-size: 15px;
            cursor: pointer;
            border-radius: 5px;
        }
        
        .file-preview-wrapper {
            padding: 10px;
            position: relative;
        }
        
        .file-preview-wrapper>img {
            position: relative;
            width: 190px;
            height: 130px;
            z-index: 10;
        }
        
        .file-close-button {
            position: absolute;
            /* align-items: center; */
            line-height: 18px;
            z-index: 99;
            font-size: 18px;
            right: 5px;
            top: 10px;
            color: #fff;
            font-weight: bold;
            background-color: #666666;
            width: 20px;
            height: 20px;
            text-align: center;
            cursor: pointer;
        }
        
        .file-preview-container {
            height: 100%;
            display: flex;
            flex-wrap: wrap;
        }
        
        .file-preview-wrapper-upload {
            margin: 10px;
            padding-top: 20px;
            background-color: #888888;
            width: 190px;
            height: 130px;
        }
        
        .room-write-button-wrapper {
            margin-top: 20px;
            display: flex;
            justify-content: center;
            align-items: center;
            color: #222222;
        }
        
        .room-write-button-wrapper>div {
            width: 160px;
            height: 50px;
            border: 1px solid #dddddd;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 15px;
            cursor: pointer;
        }
        
        .room-write-button {
            margin-left: 15px;
            color: #fff;
            background-color: #1564f9;
        }
        
        .room-write-button:hover {
            opacity: 0.8;
        }
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