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<template>
  <div class="app-container">
      <el-form
        ref="formRef"
        :model="formData"
        :rules="formRules"
        label-width="100px"
        v-loading="formLoading"
      >
                     <el-form-item label="名字" prop="name">
                      <el-input v-model="formData.name" placeholder="请输入名字" />
                    </el-form-item>
                    <el-form-item label="简介" prop="description">
                      <el-input v-model="formData.description" type="textarea" placeholder="请输入简介" />
                    </el-form-item>
                    <el-form-item label="出生日期" prop="birthday">
                      <el-date-picker clearable v-model="formData.birthday" type="date" value-format="timestamp" placeholder="选择出生日期" />
                    </el-form-item>
                    <el-form-item label="性别" prop="sex">
                      <el-select v-model="formData.sex" placeholder="请选择性别">
                            <el-option v-for="dict in this.getDictDatas(DICT_TYPE.SYSTEM_USER_SEX)"
                                       :key="dict.value" :label="dict.label" :value="parseInt(dict.value)" />
                      </el-select>
                    </el-form-item>
                    <el-form-item label="是否有效" prop="enabled">
                      <el-radio-group v-model="formData.enabled">
                            <el-radio v-for="dict in this.getDictDatas(DICT_TYPE.INFRA_BOOLEAN_STRING)"
                                      :key="dict.value" :label="dict.value">{{dict.label}}</el-radio>
                      </el-radio-group>
                    </el-form-item>
                    <el-form-item label="头像">
                      <ImageUpload v-model="formData.avatar"/>
                    </el-form-item>
                    <el-form-item label="附件">
                      <FileUpload v-model="formData.video"/>
                    </el-form-item>
                    <el-form-item label="备注">
                      <Editor v-model="formData.memo" :min-height="192"/>
                    </el-form-item>
      </el-form>
  </div>
</template>
 
<script>
  import * as StudentApi from '@/api/infra/demo';
      import ImageUpload from '@/components/ImageUpload';
      import FileUpload from '@/components/FileUpload';
      import Editor from '@/components/Editor';
  export default {
    name: "StudentTeacherForm",
    components: {
          ImageUpload,
          FileUpload,
          Editor,
    },
    props:[
      'studentId'
    ],// 学生编号（主表的关联字段）
    data() {
      return {
        // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
        formLoading: false,
        // 表单参数
        formData: [],
        // 表单校验
        formRules: {
                        studentId: [{ required: true, message: "学生编号不能为空", trigger: "blur" }],
                        name: [{ required: true, message: "名字不能为空", trigger: "blur" }],
                        description: [{ required: true, message: "简介不能为空", trigger: "blur" }],
                        birthday: [{ required: true, message: "出生日期不能为空", trigger: "blur" }],
                        sex: [{ required: true, message: "性别不能为空", trigger: "change" }],
                        enabled: [{ required: true, message: "是否有效不能为空", trigger: "blur" }],
                        avatar: [{ required: true, message: "头像不能为空", trigger: "blur" }],
                        memo: [{ required: true, message: "备注不能为空", trigger: "blur" }],
        },
      };
    },
    watch:{/** 监听主表的关联字段的变化，加载对应的子表数据 */
      studentId:{
        handler(val) {
          // 1. 重置表单
              this.formData = {
                                  id: undefined,
                                  studentId: undefined,
                                  name: undefined,
                                  description: undefined,
                                  birthday: undefined,
                                  sex: undefined,
                                  enabled: undefined,
                                  avatar: undefined,
                                  video: undefined,
                                  memo: undefined,
              }
          // 2. val 非空，则加载数据
          if (!val) {
            return;
          }
          try {
            this.formLoading = true;
            // 这里还是需要获取一下 this 的不然取不到 formData
            const that = this;
            StudentApi.getStudentTeacherByStudentId(val).then(function (res){
              const data = res.data;
              if (!data) {
                return
              }
              that.formData = data;
            })
          } finally {
            this.formLoading = false;
          }
        },
        immediate: true
      }
    },
    methods: {
      /** 表单校验 */
      validate(){
        return this.$refs["formRef"].validate();
      },
      /** 表单值 */
      getData(){
        return this.formData;
      }
    }
  };
</script>