ruoyi element-ui 实现拖拉调整图片顺序

安装sortablejs

https://sortablejs.com/

npm 安装sortablejs

npm install sortablejs --save

相关options

var sortable = new Sortable(el, {group: "name",  // or { name: "...", pull: [true, false, 'clone', array], put: [true, false, array] }sort: true,  // sorting inside listdelay: 0, // time in milliseconds to define when the sorting should startdelayOnTouchOnly: false, // only delay if user is using touchtouchStartThreshold: 0, // px, how many pixels the point should move before cancelling a delayed drag eventdisabled: false, // Disables the sortable if set to true.store: null,  // @see Storeanimation: 150,  // ms, animation speed moving items when sorting, `0` — without animationeasing: "cubic-bezier(1, 0, 0, 1)", // Easing for animation. Defaults to null. See https://easings.net/ for examples.handle: ".my-handle",  // Drag handle selector within list itemsfilter: ".ignore-elements",  // Selectors that do not lead to dragging (String or Function)preventOnFilter: true, // Call `event.preventDefault()` when triggered `filter`draggable: ".item",  // Specifies which items inside the element should be draggabledataIdAttr: 'data-id', // HTML attribute that is used by the `toArray()` methodghostClass: "sortable-ghost",  // Class name for the drop placeholderchosenClass: "sortable-chosen",  // Class name for the chosen itemdragClass: "sortable-drag",  // Class name for the dragging itemswapThreshold: 1, // Threshold of the swap zoneinvertSwap: false, // Will always use inverted swap zone if set to trueinvertedSwapThreshold: 1, // Threshold of the inverted swap zone (will be set to swapThreshold value by default)direction: 'horizontal', // Direction of Sortable (will be detected automatically if not given)forceFallback: false,  // ignore the HTML5 DnD behaviour and force the fallback to kick infallbackClass: "sortable-fallback",  // Class name for the cloned DOM Element when using forceFallbackfallbackOnBody: false,  // Appends the cloned DOM Element into the Document's BodyfallbackTolerance: 0, // Specify in pixels how far the mouse should move before it's considered as a drag.dragoverBubble: false,removeCloneOnHide: true, // Remove the clone element when it is not showing, rather than just hiding itemptyInsertThreshold: 5, // px, distance mouse must be from empty sortable to insert drag element into itsetData: function (/** DataTransfer */dataTransfer, /** HTMLElement*/dragEl) {dataTransfer.setData('Text', dragEl.textContent); // `dataTransfer` object of HTML5 DragEvent},// Element is chosenonChoose: function (/**Event*/evt) {evt.oldIndex;  // element index within parent},// Element is unchosenonUnchoose: function(/**Event*/evt) {// same properties as onEnd},// Element dragging startedonStart: function (/**Event*/evt) {evt.oldIndex;  // element index within parent},// Element dragging endedonEnd: function (/**Event*/evt) {var itemEl = evt.item;  // dragged HTMLElementevt.to;    // target listevt.from;  // previous listevt.oldIndex;  // element's old index within old parentevt.newIndex;  // element's new index within new parentevt.oldDraggableIndex; // element's old index within old parent, only counting draggable elementsevt.newDraggableIndex; // element's new index within new parent, only counting draggable elementsevt.clone // the clone elementevt.pullMode;  // when item is in another sortable: `"clone"` if cloning, `true` if moving},// Element is dropped into the list from another listonAdd: function (/**Event*/evt) {// same properties as onEnd},// Changed sorting within listonUpdate: function (/**Event*/evt) {// same properties as onEnd},// Called by any change to the list (add / update / remove)onSort: function (/**Event*/evt) {// same properties as onEnd},// Element is removed from the list into another listonRemove: function (/**Event*/evt) {// same properties as onEnd},// Attempt to drag a filtered elementonFilter: function (/**Event*/evt) {var itemEl = evt.item;  // HTMLElement receiving the `mousedown|tapstart` event.},// Event when you move an item in the list or between listsonMove: function (/**Event*/evt, /**Event*/originalEvent) {// Example: https://jsbin.com/nawahef/edit?js,outputevt.dragged; // dragged HTMLElementevt.draggedRect; // DOMRect {left, top, right, bottom}evt.related; // HTMLElement on which have guidedevt.relatedRect; // DOMRectevt.willInsertAfter; // Boolean that is true if Sortable will insert drag element after target by defaultoriginalEvent.clientY; // mouse position// return false; — for cancel// return -1; — insert before target// return 1; — insert after target// return true; — keep default insertion point based on the direction// return void; — keep default insertion point based on the direction},// Called when creating a clone of elementonClone: function (/**Event*/evt) {var origEl = evt.item;var cloneEl = evt.clone;},// Called when dragging element changes positiononChange: function(/**Event*/evt) {evt.newIndex // most likely why this event is used is to get the dragging element's current index// same properties as onEnd}
});

修改组件image-upload、el-upload

el-upload

<el-uploadmultiple:action="uploadImgUrl"list-type="picture-card":on-success="handleUploadSuccess":before-upload="handleBeforeUpload":limit="limit":on-error="handleUploadError":on-exceed="handleExceed"ref="imageUpload":on-remove="handleDelete":show-file-list="true":headers="headers":file-list.sync="fileList":on-preview="handlePictureCardPreview":class="{hide: this.fileList.length >= this.limit}"><i class="el-icon-plus"></i>
</el-upload>

引入Sortable

import Sortable from 'sortablejs';

初始化挂载

mounted() {this.initDragSort();
},

实现前端拖动，后台路径变化

这里直接使用onEnd

// Element dragging endedonEnd: function (/**Event*/evt) {var itemEl = evt.item;  // dragged HTMLElementevt.to;    // target listevt.from;  // previous listevt.oldIndex;  // element's old index within old parentevt.newIndex;  // element's new index within new parentevt.oldDraggableIndex; // element's old index within old parent, only counting draggable elementsevt.newDraggableIndex; // element's new index within new parent, only counting draggable elementsevt.clone // the clone elementevt.pullMode;  // when item is in another sortable: `"clone"` if cloning, `true` if moving},

// 排序拖动initDragSort() {const el = this.$refs.imageUpload.$el.querySelectorAll('.el-upload-list')[0];Sortable.create(el, {onEnd: ({ oldIndex, newIndex }) => {// 交换位置const changelist = this.fileList;//console.log("內容1："+this.fileList);const page = changelist[oldIndex];changelist.splice(oldIndex, 1);changelist.splice(newIndex, 0, page);//获取新listthis.fileList = changelist;//将list转化成stringthis.listToString(this.fileList)//console.log("內容2："+this.fileList);//赋值返回this.$emit("input", this.listToString(this.fileList));}});}

使用组件

<el-form-item label="图片" prop="picture"><image-upload v-model="form.picture"/>
</el-form-item>

图片顺序调整

图片顺序调整

后台传值同步调整

组件下载
https://download.csdn.net/download/qq_21271511/89179959