1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | 8x | import _ from 'lodash' import { LIST } from '../constants' const { SET_OPTIONS, PAGE, FIRST, NEXT, LAST, PREV, SET_PARAMS } = LIST export default class ListActions { constructor(listName, listSelectors, model, modelActions) { this.modelActions = modelActions this.listSelectors = listSelectors this.listName = listName this.modelName = model.modelName } setOptions({ headers, params, pageSize, offset }) { const payload = _.omitBy({ headers, params, pageSize, offset, listName: this.listName, modelName: this.modelName }, _.isNil) return { type: SET_OPTIONS, payload } } setParams(params) { const payload = _.omitBy({ ...params, listName: this.listName, modelName: this.modelName }, _.isNil) return { type: SET_PARAMS, payload } } _page(page, dispatch, state) { dispatch({ type: PAGE, payload: { page, listName: this.listName, modelName: this.modelName } }) const listObj = this.listSelectors.getListObj(state) const { where, include } = listObj.params const filter = _.omitBy({ where, limit: listObj.pageSize, skip: page * listObj.pageSize, include }, _.isNil) dispatch(this.modelActions.find(filter, this.listName)) dispatch(this.modelActions.count(where, this.listName)) } page(page) { return (dispatch, getState) => this._page(page, dispatch, getState()) } next() { return (dispatch, getState) => { let hasNext = this.listSelectors.hasNext(getState()) if (hasNext) { const currentPage = this.listSelectors.getCurrentPage(getState()) return this._page(currentPage + 1, dispatch, getState()) } } } prev() { return (dispatch, getState) => { let hasPrev = this.listSelectors.hasPrev(getState()) if (hasPrev) { const currentPage = this.listSelectors.getCurrentPage(getState()) return this._page(currentPage - 1, dispatch, getState()) } } } refresh() { return (dispatch, getState) => { const currentPage = this.listSelectors.getCurrentPage(getState()) return this._page(currentPage, dispatch, getState()) } } first() { return (dispatch, getState) => { let hasPrev = this.listSelectors.hasPrev(getState()) if (hasPrev) { return this._page(0, dispatch, getState()) } } } last() { return (dispatch, getState) => { const state = getState() let hasNext = this.listSelectors.hasNext(state) if (hasNext) { const pageSize = this.listSelectors.getListObj(state).pageSize const total = this.listSelectors.getTotal(state) return this._page(Math.floor(total / pageSize), dispatch, state) } } } } |