基于Vue和Quasar的前端SPA我的项目实战之拖拽表单定制（十六）
回顾
通过前一篇文章 基于Vue和Quasar的前端SPA我的项目实战之动静表单（五）的介绍，实现了元数据中动静表单设计性能，反对常见的数据类型和索引，而后实现了动静表单的crud增删改查性能，所有的表单页面都是默认的格调。本文次要介绍拖拽表单定制性能，通过拖拽的形式定制表单录入和编辑页面，满足了个性化需要。
简介
针对元数据表的每个字段，通过拖拽形式决定是否显示或者暗藏，而后还能够配置显示的宽度。最终以json格局保留到后盾数据库，运行时依据配置动静渲染录入和编辑表单form页面。针对不同的设施（电脑，平板，手机）都能够独自定制。
UI界面
页面构建
运行时
代码
阐明
采纳开源框架vuesortable，基于vue的实现排序，反对拖拽。页面构建分为左中右三个局部，右边为候选字段，两头为须要显示的字段，左边能够针对每个字段独自设置一些属性，比方宽度等。
数据表
创立表单tableFormBuilder，用于存储页面构建json数据，包含类型type、设施device、内容body等字段, 充分利用crudapi性能，API局部零代码实现。
tableFormBuilder
外围代码
页面构建
<draggable class="dragArea list-group row" :list="selectedList" group="people" @change="log"> <div class="list-group-item q-pa-md" v-for="formElement in selectedList" :key="formElement.columnId" :class="formElement | classFormat(currentElement)" @click="selectForEdit(formElement)" > <div> <div v-bind:class="{ 'required': !formElement.column.nullable}"> {{formElement.column.caption}}: </div> <q-input v-if="isStringType(formElement)" readonly :placeholder="formElement.column.description" :type="formElement.isPwd ? 'password' : 'text'" v-model="formElement.column.value" > <template v-slot:append v-if="!formElement.isText" > <q-icon :name="formElement.isPwd ? 'visibility_off' : 'visibility'" class="cursor-pointer" @click="formElement.isPwd = !formElement.isPwd" /> </template> </q-input> <q-editor readonly v-else-if="isTextType(formElement)" v-model="textValue" :placeholder="formElement.column.description" > </q-editor> <q-input v-else-if="isDateTimeType(formElement)" readonly> <template v-slot:prepend> <q-icon name="event" class="cursor-pointer"> <q-popup-proxy ref="qDateProxy" transition-show="scale" transition-hide="scale"> <q-date mask="YYYY-MM-DD HH:mm:ss" @input="hideRefPopProxyAction('qDateProxy')" /> </q-popup-proxy> </q-icon> </template> <template v-slot:append> <q-icon name="access_time" class="cursor-pointer"> <q-popup-proxy ref="qTimeProxy" transition-show="scale" transition-hide="scale"> <q-time mask="YYYY-MM-DD HH:mm:ss" format24h with-seconds @input="hideRefPopProxyAction('qTimeProxy')" /> </q-popup-proxy> </q-icon> </template> </q-input> <q-input v-else-if="isDateType(formElement)" readonly> <template v-slot:append> <q-icon name="event" class="cursor-pointer"> <q-popup-proxy ref="qDateProxy" transition-show="scale" transition-hide="scale"> <q-date mask="YYYY-MM-DD" @input="hideRefPopProxyAction('qDateProxy')" /> </q-popup-proxy> </q-icon> </template> </q-input> <q-input v-else-if="isTimeType(formElement)" readonly> <template v-slot:append> <q-icon name="access_time" class="cursor-pointer"> <q-popup-proxy ref="qTimeProxy" transition-show="scale" transition-hide="scale"> <q-time mask="HH:mm:ss" format24h with-seconds @input="hideRefPopProxyAction('qTimeProxy')" /> </q-popup-proxy> </q-icon> </template> </q-input> <q-toggle v-else-if="isBoolType(formElement)" readonly v-model="formElement.column.value"> </q-toggle> <q-input readonly v-else-if="isNumberType(formElement)" :placeholder="formElement.column.description" type="number" v-model="formElement.column.value" > </q-input> <CFile v-else-if="isAttachmentType(formElement)" v-model="formElement.column.value" > </CFile> <q-input v-else readonly :placeholder="formElement.column.description" :type="formElement.isPwd ? 'password' : 'text'" v-model="formElement.column.value" > <template v-slot:append v-if="!formElement.isText" > <q-icon :name="formElement.isPwd ? 'visibility_off' : 'visibility'" class="cursor-pointer" @click="formElement.isPwd = !formElement.isPwd" /> </template> </q-input> </div> <div class="row reverse editable-element-action-buttons"> <div class="justify-end q-pt-xs"> <q-btn @click="deleteElement(formElement)" v-if="isSelectedForEdit(formElement)" class="editable-element-button" color="red" icon="delete" round unelevated size="xs"> <q-tooltip>移除</q-tooltip> </q-btn> </div> </div> </div></draggable>通过draggable标签实现
运行时渲染
<div v-if="selectedList.length > 0" class="row"> <div class="list-group-item q-pa-md" v-for="formElement in selectedList" :key="formElement.columnId" :class="formElement | classFormat"> <div> <div v-bind:class="{ 'required': !formElement.column.nullable}"> {{formElement.column.caption}}: </div> <div class="row items-baseline content-center" style="border-bottom: 1px solid rgba(0,0,0,0.12)" v-if="formElement.column.relationTableName"> <div class="col-11"> <span>{{ formElement.column.value | relationDataFormat(formElement.column) }}</span> </div> <div class="col-1"> <q-btn round dense flat icon="zoom_in" @click="openDialogClickAction(formElement.column)" /> </div> </div> <q-input v-else-if="isStringType(formElement.column.dataType)" v-model="formElement.column.value" :placeholder="formElement.column.description" :type="formElement.isPwd ? 'password' : 'text'" > <template v-slot:append v-if="!formElement.isText" > <q-icon :name="formElement.isPwd ? 'visibility_off' : 'visibility'" class="cursor-pointer" @click="formElement.isPwd = !formElement.isPwd" /> </template> </q-input> <q-editor v-else-if="isTextType(formElement.column.dataType)" v-model="formElement.column.value" :placeholder="formElement.column.description" > </q-editor> <q-input v-else-if="isDateTimeType(formElement.column.dataType)" v-model="formElement.column.value" > <template v-slot:prepend> <q-icon name="event" class="cursor-pointer"> <q-popup-proxy ref="qDateProxy" transition-show="scale" transition-hide="scale"> <q-date v-model="formElement.column.value" mask="YYYY-MM-DD HH:mm:ss" @input="hideRefPopProxyAction('qDateProxy')" /> </q-popup-proxy> </q-icon> </template> <template v-slot:append> <q-icon name="access_time" class="cursor-pointer"> <q-popup-proxy ref="qTimeProxy" transition-show="scale" transition-hide="scale"> <q-time v-model="formElement.column.value" mask="YYYY-MM-DD HH:mm:ss" format24h with-seconds @input="hideRefPopProxyAction('qTimeProxy')" /> </q-popup-proxy> </q-icon> </template> </q-input> <q-input v-else-if="isDateType(formElement.column.dataType)" v-model="formElement.column.value"> <template v-slot:append> <q-icon name="event" class="cursor-pointer"> <q-popup-proxy ref="qDateProxy" transition-show="scale" transition-hide="scale"> <q-date v-model="formElement.column.value" mask="YYYY-MM-DD" @input="hideRefPopProxyAction('qDateProxy')" /> </q-popup-proxy> </q-icon> </template> </q-input> <q-input v-else-if="isTimeType(formElement.column.dataType)" v-model="formElement.column.value" > <template v-slot:append> <q-icon name="access_time" class="cursor-pointer"> <q-popup-proxy ref="qTimeProxy" transition-show="scale" transition-hide="scale"> <q-time v-model="formElement.column.value" mask="HH:mm:ss" format24h with-seconds @input="hideRefPopProxyAction('qTimeProxy')" /> </q-popup-proxy> </q-icon> </template> </q-input> <q-toggle v-else-if="isBoolType(formElement.column.dataType)" v-model="formElement.column.value" > </q-toggle> <q-input v-else-if="isNumberType(formElement.column.dataType)" v-model="formElement.column.value" :placeholder="formElement.column.description" type="number"> </q-input> <CFile v-else-if="isAttachmentType(formElement.column.dataType)" v-model="formElement.column.value" @input="(data)=>{ formElement.column.value = data.url; }"></CFile> <q-input v-else v-model="formElement.column.value" :placeholder="formElement.column.description" :type="formElement.isPwd ? 'password' : 'text'" > <template v-slot:append v-if="!formElement.isText" > <q-icon :name="formElement.isPwd ? 'visibility_off' : 'visibility'" class="cursor-pointer" @click="formElement.isPwd = !formElement.isPwd" /> </template> </q-input> </div> </div></div>判断是否存在定制页面，如果存在动静渲染，否则采纳默认页面布局。
例子
以产品为例，配置好录入页面之后，运行时原来的默认录入页面用新的页面代替，新的表单页面和之前配置的表单页面统一，性能不受影响，能够失常的录入数据。
小结
本文次要通过拖拽形式实现表单定制性能，应用十分不便，零代码定制表单录入和编辑页面，满足了个性化需要，整个过程无需写代码。
crudapi简介
crudapi是crud+api组合，示意增删改查接口，是一款零代码可配置的产品。应用crudapi能够辞别枯燥无味的增删改查代码，让您更加专一业务，节约大量老本，从而进步工作效率。crudapi的指标是让解决数据变得更简略，所有人都能够收费应用！无需编程，通过配置主动生成crud增删改查RESTful API，提供后盾UI治理业务数据。基于支流的开源框架，领有自主知识产权，反对二次开发。
demo演示
crudapi属于产品级的零代码平台，不同于主动代码生成器，不须要生成Controller、Service、Repository、Entity等业务代码，程序运行起来就能够应用，真正0代码，能够笼罩根本的和业务无关的CRUD RESTful API。
官网地址：https://crudapi.cn
测试地址：https://demo.crudapi.cn/crudapi/login
附源码地址
GitHub地址
https://github.com/crudapi/crudapi-admin-web
Gitee地址
https://gitee.com/crudapi/crudapi-admin-web
因为网络起因，GitHub可能速度慢，改成拜访Gitee即可，代码同步更新。