1

问题已解决,请通读问题,了解如何逐步解决问题

我阅读了有关组合 API(https://vue-composition-api-rfc.netlify.com/#api-introduction)的信息,并尝试转换我现有的基于 vuejs 中 Option api 上的打字稿的代码,但我未能让它工作,有点困惑组合 API 是如何工作的。

我的工作代码如下:

<script lang="ts">
  import Vue from "vue";
  import {inputFields} from "@/mixins/inputField/inputField";
  import VuePersianDatetimePicker from "vue-persian-datetime-picker"
  import {util_timestampz_formatter, util_timestampz_now} from "@/utils/commonUtility";
  import {InputFieldHelper} from "@/mixins/Helpers/FormGeneratorInputFieldHelper/InputField.Helper.mixin";

  export default Vue.extend({
    name: "DateTimePicker",
    props: ['instance', "value", "formSection", "isEnable"],
    components: {
      datePicker: VuePersianDatetimePicker
    },
    data() {
      return {
        inputField: new InputFieldHelper(this.value, this.instance, this.formSection, this.isEnable)
      }
    },
    mounted() {
      //@ts-ignore
      this.instance.min = util_timestampz_now();
    },
    methods: {
      updateValue() {
        let new_data = this.inputField.updateValue();
        new_data ? this.$emit("updateValue", new_data) : "";
      },
      updateDateTime(time: string) {
        //@ts-ignore
        this.inputField.inputValue = util_timestampz_formatter(this.inputField.inputValue);
        //@ts-ignore
        this.updateValue();
      },
    }
  });
</script>

组合 api 中的转换版本低于未正常运行的版本:

<script lang="ts">
  import Vue from "vue";
  import {reactive, createComponent, onMounted} from "@vue/composition-api";
  import VuePersianDatetimePicker from "vue-persian-datetime-picker"
  import {util_timestampz_formatter, util_timestampz_now} from "@/utils/commonUtility";
  import {InputFieldHelper} from "@/mixins/Helpers/FormGeneratorInputFieldHelper/InputField.Helper.mixin";
  import {FormGeneratorInputField} from "@/types";

  export default createComponent({
    name: "DateTimePicker",
    props: {
      instance,
      value,
      formSection,
      isEnable,
    },
    components: {
      datePicker: VuePersianDatetimePicker
    },
    setup(props, context) {
      const inputField = reactive(new InputFieldHelper(props.value, props.instance, props.formSection, props.isEnable));
      onMounted(() => {
        props.instance.min = util_timestampz_now();
      });
      const updateValue = () => {
        let new_data = inputField.updateValue();
        new_data ? context.$emit("updateValue", new_data) : "";
      };
      const updateDateTime = (time: string) => {
        inputField.inputValue = util_timestampz_formatter(inputField.inputValue);
        updateValue();
      };
      return {
        inputField, updateValue, updateDateTime
      }
    }
  });
</script>

其中 webstorm 显示 3 个错误:

在此处输入图像描述

有没有办法正确解决这个问题?

.....................

更新1:

我在使用道具时犯了错误(我以为我是新的 vue,它不需要类型,它会自动从父组件的 typescript 中获取它)。多亏了古问题,问题已经解决并得到解决。

以及在获取道具类型错误方面遇到类似问题的任何人,如下图所示 在此处输入图像描述

感谢https://frontendsociety.com/using-a-typescript-interfaces-and-types-as-a-prop-type-in ​​-vuejs-508ab3f83480 ,您可以将创建的类型接口作为如下函数传递: 在此处输入图像描述

但仍有一些问题需要解决,如下所示:

1.当我删除反应性时,反应性似乎无法正常工作,并且在模板中显示“未解析的变量或缺少导入语句” 在此处输入图像描述

…………………………………………………………………………………………

update2分享道具和使用合成功能:

对我来说,在将基于选项的 api 转换为组合 api 之后,它似乎比新的更好,这要归功于古和 Maximilian shrwazmuller(我强烈建议观看这个免费视频: https: //www.youtube.com/watch ?v=V-xK3sbc7xI),谷歌搜索与这个https://vue-composition-api-rfc.netlify.com/api.html#template-refs我重新编写代码如下:

<script lang="ts">
  import {createComponent, onMounted} from "@vue/composition-api";
  import VuePersianDatetimePicker from "vue-persian-datetime-picker"
  import {util_timestampz_formatter, util_timestampz_now} from "@/utils/commonUtility";
  import {
    useInputFieldComposition,
    inputFieldProps
  } from "@/mixins/Helpers/FormGeneratorInputFieldHelper/inputField.composition";
  import {ComponentPropsOptions} from "@vue/composition-api/dist/component/componentProps";

  export default createComponent({
    name: "DateTimePicker",
    props: inputFieldProps as ComponentPropsOptions,
    components: {
      datePicker: VuePersianDatetimePicker
    },
    setup(props, context) {
      const {inputField, updateValue} = useInputFieldComposition(props, context);
      onMounted(() => {
        props.instance.min = util_timestampz_now();
      });
      const updateDateTime = (time: string) => {
        inputField.inputValue = util_timestampz_formatter(inputField.inputValue);
        updateValue();
      };
      return {
        inputField, updateValue, updateDateTime
      }
    }
  });
</script>

如您所见,它非常简洁,因为将在组件之间共享的所有内容都在另一个文件中(名为:inputFiled.compositons),如下所示:

//inputField.composition.ts
import {PropType, reactive} from "@vue/composition-api";
import {FormGeneratorInputField} from "@/types";
import {InputFieldHelper} from "@/mixins/Helpers/FormGeneratorInputFieldHelper/InputField.Helper.mixin";

export const inputFieldProps = {
  instance: {
    type: Object as PropType<FormGeneratorInputField>,
    required: true
  },
  value: {
    type: Object,
    required: true
  },
  formSection: {
    type: String,
    required: true
  },
  isEnable: {
    type: Boolean,
    required: true
  },
};
export const useInputFieldComposition = (props: any, context: any) => {
  let inputField  = reactive(new InputFieldHelper(props.value, props.instance, props.formSection, props.isEnable));
  const updateValue = (): any => {
    let new_data = inputField.passInfoMixedValue();
    new_data ? context.emit("updateValue", new_data) : "";
    return new_data;
  };

  return {
    props, inputField, updateValue
  }

正如您所看到的,通过此功能,我们可以充分发挥打字稿的潜力。

最后我应该告诉你,如果你遵循路径并使用 vue-composition api,你的项目将完美运行,但 webstorm 会向你显示一些关于模板中特定代码的警告,比如未解析的变量。这些新的语法支持正在开发中,您可以在本期https://youtrack.jetbrains.com/issue/WEB-41565中看到, 所以不要担心并使用它。

4

1 回答 1

1

阅读关于props. 这是一个例子:

    props: {
      instance: {
        type: Object,
        required: true
      },
      value: {
        type: Object,
        required: true
      },
      formSection: {
        type: Object,
        required: true
      },
      isEnable: {
        type: Boolean,
        required: false
      },
    },

为了启用更好的类型,PropType可以使用:

import { PropType } from "@vue/composition-api/dist/component/componentProps";
// …

    props: {
      instance: {
        type: Object as PropType<FormGeneratorInputField>,
        required: true
      },
      // …

要发出事件,请遵循错误消息中的建议:context.emit("updateValue").

关于 的实例InputFieldHelper,我建议重构这个类的实现:

class InputFieldHelper {
  readonly inputField: {
    inputValue: string | null
  }

  constructor(/* … */) {
    this.inputField = reactive({
      inputValue: null
    })
  }
}

然后,使用它:

const helper = new InputFieldHelper(props.value, props.instance, props.formSection, props.isEnable);

const inputField = helper.inputField;
于 2020-01-28T15:44:07.287 回答