VUE+Element 动态生成表单 and 动态生成校验（全网首发）

妖狐艹你老母 2022-11-17 05:13 224阅读 0赞

## 需求： 在状态流中，需要一个必填表单，里面的必填字段都是未知的，需要动态生成 ##

> 俗话说得好，可以cv绝不手敲代码，但是找遍了全网，没有类似的案例。。。  
> 被逼无奈只能手写，但最后效果还是挺满意的，话不多说，上代码！

<template>
      <el-dialog v-loading="loading" title="Require" :visible.sync="dialogFormVisible" append-to-body>
        <el-form ref="form" :model="queryData" :rules.sync="rules">
          
          <el-row>
            <el-col v-for="(item,index) of correctTypeGroup[2]" :key="index" :span="12">
              <el-form-item v-if="refreshForm" :label="item.fieldName" :prop="item.fieldAttributeName" :label-width="formLabelWidth">
                
                <el-select v-if="item.fieldAttributeName === 'assignee' " v-model="queryData[item.fieldAttributeName]" :disabled="item.readOnly === 1" @change="updateForm">
                  <el-option
                    v-for="assignee in assignees"
                    :key="assignee.id"
                    :label="assignee.name"
                    :value="assignee.id"
                  />
                </el-select>
                
                <el-select v-else-if="item.fieldAttributeName === 'mailNotifier'" v-model="queryData[item.fieldAttributeName]" :disabled="item.readOnly === 1" multiple @change="updateForm">
                  <el-option
                    v-for="assignee in assignees"
                    :key="assignee.id"
                    :label="assignee.name"
                    :value="assignee.id"
                  />
                </el-select>
                
                <el-select v-else v-model="queryData[item.fieldAttributeName]" :disabled="item.readOnly === 1" @change="updateForm">
                  <el-option
                    v-for="assignee in pageEnum[item.fieldId]"
                    :key="assignee.id"
                    :label="assignee.value"
                    :value="assignee.id"
                  />
                </el-select>
    
              </el-form-item>
            </el-col>
          </el-row>
    
          
          <el-row>
            <el-col v-for="(item,index) of correctTypeGroup[5]" :key="index" :span="6">
              <el-form-item v-if="refreshForm" :label="item.fieldName" :prop="item.fieldAttributeName" :label-width="formLabelWidth">
                
                <el-checkbox v-model="queryData[item.fieldAttributeName]" :disabled="item.readOnly === 1" checked @change="updateForm">{ {  item.fieldName }}</el-checkbox>
              </el-form-item>
            </el-col>
          </el-row>
    
          
          <el-row>
            <el-col v-for="(item,index) of correctTypeGroup[3]" :key="index" :span="12">
              <el-form-item v-if="refreshForm" :label="item.fieldName" :prop="item.fieldAttributeName" :label-width="formLabelWidth">
                <el-date-picker
                  v-model="queryData[item.fieldAttributeName]"
                  :disabled="item.readOnly === 1"
                  type="date"
                  value-format="yyyy-MM-dd"
                  @input="updateForm"
                />
              </el-form-item>
            </el-col>
          </el-row>
    
          
          <el-row>
            <el-col v-for="(item,index) of correctTypeGroup[1]" :key="index" :span="24">
              <el-form-item v-if="refreshForm" :label="item.fieldName" :prop="item.fieldAttributeName" :label-width="formLabelWidth">
                <el-input v-model="queryData[item.fieldAttributeName]" :disabled="item.readOnly === '1'" type="textarea" @input="updateForm" />
              </el-form-item>
            </el-col>
          </el-row>
    
          
          <el-row>
            <el-col v-for="(item,index) of correctTypeGroup[4]" :key="index" :span="24">
              <el-form-item v-if="refreshForm" :label="item.fieldName" :prop="item.fieldAttributeName" :label-width="formLabelWidth">
                <el-input v-model="queryData[item.fieldAttributeName]" onkeyup="value=value.replace(/[^\d]/g,'')" @input="updateForm" />
              </el-form-item>
            </el-col>
          </el-row>
        </el-form>
        <div slot="footer" class="dialog-footer">
          <el-button @click="dialogFormVisible = false">Cancel</el-button>
          <el-button type="primary" @click="save">Save</el-button>
        </div>
      </el-dialog>
    </template>
    
    <script>
    
    import {  getEnumsByProjectIdAndEnumsIds } from '@/api/enum'
    import {  copyProperties } from '@/utils/bean-util'
    import {  searchAction } from '@/api/quality/action'
    import {  searchField } from '@/api/quality/page'
    import {  IsEmpty } from '@/utils/validate'
    import {  formatDate } from '@/utils/date'
    export default { 
      name: 'CorrectForm',
      props: { 
        assignees: { 
          type: Array,
          default() { 
            return []
          }
        }
      },
      data() { 
        return { 
          dialogFormVisible: false,
          historyData: { },
          loading: false,
          refreshForm: true,
          queryData: { 
            id: '',
            projectId: '',
            actionId: ''
          },
          // 页面枚举容器
          pageEnum: { 
    
          },
          // 输入框类型分组容器
          correctTypeGroup: { 
    
          },
          formLabelWidth: '180px',
          customRules: { },
          rules: { }
        }
      },
      methods: { 
        /** * 提交表单的方法,此方法会校验表单,校验通过后 * 会回调父组件提供的save方法 * params: action 点击的action对象 * params: queryData 用户当前页的表单数据 */
        async submit(action, queryData, history) { 
          this.queryData = { 
            id: '',
            projectId: '',
            actionId: '',
            nativeId: ''
          }
          // 获取actionList
          const actionConfigList = await this.getActionConfigList(action)
          // 校验参数
          const result = this.validate(actionConfigList, queryData)
          // 设置扭转状态的actionId
          queryData.actionId = action.actionId
          queryData.nativeId = action.nativeId
          // 校验不通过
          if (!result.success) { 
            // 打开dialog
            this.dialogFormVisible = true
            this.historyData = queryData
    
            // 清空历史数据
            // 1.文本 2.下拉框 3.时间 4.数字 5.boolean
            this.correctTypeGroup = { 
              1: [],
              2: [],
              3: [],
              4: [],
              5: []
            }
            this.customRules = { }
    
            // 输入框分组
            // 获取页面所有的配置字段,因为字段type存在页面配置中
            const pageFields = await this.getPageField(action)
            const loadFields = []
            actionConfigList.forEach(actionField => { 
              const pageField = pageFields.filter(pageField => pageField.fieldId === actionField.fieldId)[0]
              if (pageField === undefined) { 
                this.$message({ 
                  message: 'get Page Config Field ERROR, FIELD NOT FIND, Place To Page Add ' + actionField.fieldId,
                  type: 'warning'
                })
              }
              // 保存已加载的field,用户加载页面枚举资源
              loadFields.push(pageField)
              // 加入输入分组中, correctTypeGroup的数据会被循环渲染在页面上
              this.correctTypeGroup[pageField.type].push(actionField)
              // console.log(actionField)
              if (actionField.require === 1) { 
                // 添加验证规则
                this.customRules[actionField.fieldAttributeName] = JSON.parse(pageField.rule)
    
                // 添加数据绑定对象
                this.queryData[actionField.fieldAttributeName] = ''
              }
            })
    
            // 加载页面的所有枚举值
            this.loadPageEnums(loadFields)
    
            // 拷贝属性
            copyProperties(queryData, this.queryData)
            copyProperties(history, this.queryData)
    
            // 处理时间格式
            this.correctTypeGroup[3].forEach(actionField => { 
              const timeStramp = this.queryData[actionField.fieldAttributeName]
              if (!IsEmpty(timeStramp)) { 
                this.queryData[actionField.fieldAttributeName] = formatDate(new Date(timeStramp), 'yyyy-MM-dd')
              }
            })
    
            // 校验参数
            return 'fail'
          }
          // 提交表单
          this.$emit('update', queryData, action.nativeId, null, true)
        },
        // 加载页面所有的枚举值
        loadPageEnums(pageFields) { 
          // 找出枚举字段
          this.pageEnum = { }
          const enumFields = pageFields.filter(element => element.type === 2)
          if (enumFields === undefined || enumFields.length <= 0) { 
            // 页面没有枚举值
            return
          }
    
          const fieldEnumIds = enumFields.map(field => field.fieldId)
          const queryData = { 
            projectId: this.historyData.projectId,
            enumIds: fieldEnumIds
          }
          // 获取页面的枚举值,并绑定成{fieldAlias: []}数据格式
          this.loading = false
          getEnumsByProjectIdAndEnumsIds(queryData).then(response => { 
            const pageEnums = response.data
            enumFields.forEach(field => { 
              let options = []
              // 寻找当前字段的枚举值
              const fieldEnums = Object.keys(pageEnums).filter(enumId => field.fieldId === enumId)
              if (fieldEnums != null && fieldEnums.length > 0) { 
                options = pageEnums[fieldEnums[0]]
              }
              // 需要调用vue的set方法,刷新视图,否则视图不会刷新
              this.$set(this.pageEnum, field.fieldId, options)
            })
    
            this.loading = false
          }).catch(() => { 
            this.$message({ 
              message: 'getEnumsByProjectIdAndEnumsIds is failed.',
              type: 'warning'
            })
            this.loading = false
          })
        },
        // 获取所有页面的字段
        async getPageField() { 
          try { 
            const res = await searchField({ })
            return res.data
          } catch (err) { 
            this.$message({ 
              message: 'getActionConfigList is failed.',
              type: 'warning'
            })
          }
        },
        // 获取action的配置list
        async getActionConfigList(action) { 
          try { 
            const queryData = { 
              actionId: action.nativeId
            }
            const res = await searchAction(queryData)
            return res.data
          } catch (err) { 
            this.$message({ 
              message: 'getActionConfigList is failed.',
              type: 'warning'
            })
          }
        },
        // 验证表单的内容是否有填
        validate(actionConfigList, queryData) { 
          return {  success: actionConfigList.length < 1 }
        },
        // updateForm
        updateForm() { 
          this.$forceUpdate()
        },
        // 提交
        save() { 
          // this.$emit('update', this.queryData, this.queryData.nativeId, null, true)
          // 切换校验规则
          this.loading = true
          // 跳转路由, 去新增BUG的页面
          // this.$refs.form.validate(valid => { 
          // this.loading = false
          // if (valid) { 
          // // 跳转路由, 去新增BUG的页面
          // this.$emit('update', this.queryData, null, true)
          // }
          // })
          // 刷新form表单,不知道为什么,表单校验内容一直加载不到
          this.refreshForm = false
          // 重新加载所有表单项
          setTimeout(() => { 
            this.refreshForm = true
            this.rules = this.customRules
            // 数据要载入
            setTimeout(() => { 
              this.$refs.form.validate(valid => { 
                this.loading = false
                if (valid) { 
                  // 跳转路由, 去新增BUG的页面
                  this.dialogFormVisible = false
                  this.$emit('update', this.queryData, null, null, true)
                }
              })
            }, 2000)
          }, 500)
        }
      }
    }
    
    </script>
    <style scoped>
    </style>

**效果预览**  
![在这里插入图片描述][20210408161407734.gif_pic_center]

[20210408161407734.gif_pic_center]: /images/20221022/d489f69cec9f42b88ee4d1c1c701862b.png