Question

我正在使用altjs构建一个React应用程序作为我的Flux实现。当我尝试从前端创建/删除项目时，无论我作为参数传递给创建/删除功能，它总是最终通过整个状态。

例如：我试图删除id = 1的项目。我单击该项目上的删除并将id只传递给组件中的删除功能。该函数再次调用删除服务传递id。一旦到达商店层，它就具有组件的整个状态，而不仅仅是传递的id。

我仍然对React / Flux还不熟悉，也不确定我做错了什么或为什么会这样。

主要组件删除功能：

deleteItem = (id) => {
        console.log(id) //logs out 56b36c34ad9c927508c9d14f
        QuestionStore.deleteQuestion(id);
    }

此时，id仍然只是id。

QuestionStore：

import alt from '../core/alt';
import QuestionActions from '../actions/QuestionActions';
import QuestionSource from '../sources/QuestionSource';

class QuestionStore {
    constructor() {
        this.bindActions(QuestionActions);
        this.exportAsync(QuestionSource);
        this.loaded = false;
        this.modalIsOpen = false;
        this.data = [];
        this.question = {
            "text": '',
            "tag": [],
            "answer": [],
            "company": [],
            "createdAt": ''
        };
        this.error = null;
        this.questionAdded = null;
        this.questionDeleted = null;
    }

    onGetQuestions(data) {
        if (data === false) {
            this.onFailed();
        } else {
            this.data = data;
            this.loaded = true;
        }
    }

    onCreateQuestion(response) {
        if (response === false) {
            this.onFailed();
        } else {
            this.questionAdded = response;
        }
    }

    onDeleteQuestion(response) {
        if (response === false) {
            this.onFailed();
        } else {
            this.questionDeleted = response;
        }
    }

    onFailed(err) {
        this.loaded = true;
        this.error = "Data unavailable";
    }
}

export default alt.createStore(QuestionStore, 'QuestionStore');

问题来源：

import Api from '../services/QuestionApi';
import QuestionActions from '../actions/QuestionActions';

let QuestionSource = {
    fetchData() {
        return {
            async remote(state) {
                return Api.getQuestions()
            },
            success: QuestionActions.getQuestions
        }
    },

    createQuestion(question) {
        return {
            async remote(question) {
                return Api.createQuestion(question)
            },
            success: QuestionActions.createQuestion
        }
    },

    deleteQuestion(id) {
        //id here is an object of the entire state of QuestionStore
        return {
            async remote(id) {
                return Api.deleteQuestion(id)
            },
            success: QuestionActions.deleteQuestion
        }
    }
};

export default QuestionSource;

一旦达到这一点，id就是组件的整个状态，即使只传递了id。

Answer 1

绑定到操作的第一个参数是存储的状态（exportAsync调用的结果的一部分。所以所有参数都向右移动一个，并且第一个参数调用函数反过来成为第二个参数。见下面的代码示例：

deleteQuestion(state, id) {
    //state here is an object of the entire state of QuestionStore
    //id will be the first argument you provide to the function.
    return {
        async remote(id) {
            return Api.deleteQuestion(id)
        },
        success: QuestionActions.deleteQuestion
    }
}

Documentation from alt.js about handling async operations.

反应CRUD操作总是使用状态

1 个答案: