export default {
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props: {
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localdata: {
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type: [Array, Object],
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default () {
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return []
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}
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},
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spaceInfo: {
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type: Object,
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default () {
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return {}
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}
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},
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collection: {
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type: String,
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default: ''
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},
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action: {
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type: String,
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default: ''
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},
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field: {
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type: String,
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default: ''
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},
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orderby: {
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type: String,
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default: ''
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},
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where: {
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type: [String, Object],
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default: ''
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},
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pageData: {
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type: String,
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default: 'add'
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},
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pageCurrent: {
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type: Number,
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default: 1
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},
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pageSize: {
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type: Number,
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default: 500
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},
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getcount: {
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type: [Boolean, String],
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default: false
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},
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getone: {
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type: [Boolean, String],
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default: false
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},
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gettree: {
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type: [Boolean, String],
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default: false
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},
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manual: {
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type: Boolean,
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default: false
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},
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value: {
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type: [Array, String, Number],
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default () {
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return []
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}
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},
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modelValue: {
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type: [Array, String, Number],
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default () {
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return []
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}
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},
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preload: {
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type: Boolean,
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default: false
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},
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stepSearh: {
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type: Boolean,
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default: true
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},
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selfField: {
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type: String,
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default: ''
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},
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parentField: {
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type: String,
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default: ''
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},
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multiple: {
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type: Boolean,
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default: false
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},
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map: {
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type: Object,
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default () {
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return {
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text: "text",
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value: "value"
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}
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}
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}
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},
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data() {
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return {
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loading: false,
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errorMessage: '',
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loadMore: {
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contentdown: '',
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contentrefresh: '',
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contentnomore: ''
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},
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dataList: [],
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selected: [],
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selectedIndex: 0,
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page: {
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current: this.pageCurrent,
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size: this.pageSize,
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count: 0
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}
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}
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},
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computed: {
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isLocalData() {
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return !this.collection.length;
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},
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isCloudData() {
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return this.collection.length > 0;
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},
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isCloudDataList() {
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return (this.isCloudData && (!this.parentField && !this.selfField));
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},
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isCloudDataTree() {
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return (this.isCloudData && this.parentField && this.selfField);
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},
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dataValue() {
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let isModelValue = Array.isArray(this.modelValue) ? (this.modelValue.length > 0) : (this.modelValue !== null ||
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this.modelValue !== undefined);
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return isModelValue ? this.modelValue : this.value;
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},
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hasValue() {
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if (typeof this.dataValue === 'number') {
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return true
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}
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return (this.dataValue != null) && (this.dataValue.length > 0)
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}
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},
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created() {
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this.$watch(() => {
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var al = [];
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['pageCurrent',
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'pageSize',
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'spaceInfo',
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'value',
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'modelValue',
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'localdata',
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'collection',
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'action',
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'field',
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'orderby',
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'where',
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'getont',
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'getcount',
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'gettree'
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].forEach(key => {
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al.push(this[key])
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});
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return al
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}, (newValue, oldValue) => {
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let needReset = false
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for (let i = 2; i < newValue.length; i++) {
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if (newValue[i] != oldValue[i]) {
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needReset = true
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break
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}
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}
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if (newValue[0] != oldValue[0]) {
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this.page.current = this.pageCurrent
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}
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this.page.size = this.pageSize
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this.onPropsChange()
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})
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this._treeData = []
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},
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methods: {
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onPropsChange() {
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this._treeData = [];
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},
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// 填充 pickview 数据
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async loadData() {
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if (this.isLocalData) {
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this.loadLocalData();
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} else if (this.isCloudDataList) {
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this.loadCloudDataList();
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} else if (this.isCloudDataTree) {
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this.loadCloudDataTree();
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}
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},
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// 加载本地数据
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async loadLocalData() {
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this._treeData = [];
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this._extractTree(this.localdata, this._treeData);
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let inputValue = this.dataValue;
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if (inputValue === undefined) {
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return;
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}
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if (Array.isArray(inputValue)) {
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inputValue = inputValue[inputValue.length - 1];
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if (typeof inputValue === 'object' && inputValue[this.map.value]) {
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inputValue = inputValue[this.map.value];
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}
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}
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this.selected = this._findNodePath(inputValue, this.localdata);
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},
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// 加载 Cloud 数据 (单列)
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async loadCloudDataList() {
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if (this.loading) {
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return;
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}
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this.loading = true;
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try {
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let response = await this.getCommand();
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let responseData = response.result.data;
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this._treeData = responseData;
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this._updateBindData();
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this._updateSelected();
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this.onDataChange();
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} catch (e) {
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this.errorMessage = e;
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} finally {
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this.loading = false;
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}
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},
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// 加载 Cloud 数据 (树形)
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async loadCloudDataTree() {
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if (this.loading) {
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return;
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}
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this.loading = true;
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try {
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let commandOptions = {
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field: this._cloudDataPostField(),
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where: this._cloudDataTreeWhere()
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};
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if (this.gettree) {
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commandOptions.startwith = `${this.selfField}=='${this.dataValue}'`;
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}
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let response = await this.getCommand(commandOptions);
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let responseData = response.result.data;
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this._treeData = responseData;
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this._updateBindData();
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this._updateSelected();
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this.onDataChange();
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} catch (e) {
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this.errorMessage = e;
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} finally {
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this.loading = false;
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}
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},
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// 加载 Cloud 数据 (节点)
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async loadCloudDataNode(callback) {
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if (this.loading) {
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return;
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}
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this.loading = true;
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try {
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let commandOptions = {
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field: this._cloudDataPostField(),
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where: this._cloudDataNodeWhere()
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};
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let response = await this.getCommand(commandOptions);
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let responseData = response.result.data;
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callback(responseData);
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} catch (e) {
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this.errorMessage = e;
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} finally {
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this.loading = false;
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}
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},
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// 回显 Cloud 数据
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getCloudDataValue() {
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if (this.isCloudDataList) {
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return this.getCloudDataListValue();
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}
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if (this.isCloudDataTree) {
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return this.getCloudDataTreeValue();
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}
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},
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// 回显 Cloud 数据 (单列)
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getCloudDataListValue() {
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// 根据 field's as value标识匹配 where 条件
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let where = [];
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let whereField = this._getForeignKeyByField();
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if (whereField) {
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where.push(`${whereField} == '${this.dataValue}'`)
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}
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where = where.join(' || ');
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if (this.where) {
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where = `(${this.where}) && (${where})`
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}
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return this.getCommand({
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field: this._cloudDataPostField(),
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where
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}).then((res) => {
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this.selected = res.result.data;
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return res.result.data;
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});
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},
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// 回显 Cloud 数据 (树形)
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getCloudDataTreeValue() {
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return this.getCommand({
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field: this._cloudDataPostField(),
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getTreePath: {
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startWith: `${this.selfField}=='${this.dataValue}'`
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}
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}).then((res) => {
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let treePath = [];
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this._extractTreePath(res.result.data, treePath);
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this.selected = treePath;
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return treePath;
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});
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},
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getCommand(options = {}) {
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/* eslint-disable no-undef */
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let db = uniCloud.database(this.spaceInfo)
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const action = options.action || this.action
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if (action) {
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db = db.action(action)
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}
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const collection = options.collection || this.collection
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db = db.collection(collection)
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const where = options.where || this.where
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if (!(!where || !Object.keys(where).length)) {
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db = db.where(where)
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}
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const field = options.field || this.field
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if (field) {
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db = db.field(field)
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}
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const orderby = options.orderby || this.orderby
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if (orderby) {
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db = db.orderBy(orderby)
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}
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const current = options.pageCurrent !== undefined ? options.pageCurrent : this.page.current
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const size = options.pageSize !== undefined ? options.pageSize : this.page.size
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const getCount = options.getcount !== undefined ? options.getcount : this.getcount
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const getTree = options.gettree !== undefined ? options.gettree : this.gettree
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const getOptions = {
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getCount,
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getTree
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}
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if (options.getTreePath) {
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getOptions.getTreePath = options.getTreePath
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}
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db = db.skip(size * (current - 1)).limit(size).get(getOptions)
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return db
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},
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_cloudDataPostField() {
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let fields = [this.field];
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if (this.parentField) {
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fields.push(`${this.parentField} as parent_value`);
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}
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return fields.join(',');
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},
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_cloudDataTreeWhere() {
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let result = []
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let selected = this.selected
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let parentField = this.parentField
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if (parentField) {
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result.push(`${parentField} == null || ${parentField} == ""`)
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}
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if (selected.length) {
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for (var i = 0; i < selected.length - 1; i++) {
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result.push(`${parentField} == '${selected[i].value}'`)
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}
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}
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let where = []
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if (this.where) {
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where.push(`(${this.where})`)
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}
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if (result.length) {
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where.push(`(${result.join(' || ')})`)
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}
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return where.join(' && ')
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},
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_cloudDataNodeWhere() {
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let where = []
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let selected = this.selected;
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if (selected.length) {
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where.push(`${this.parentField} == '${selected[selected.length - 1].value}'`);
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}
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where = where.join(' || ');
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if (this.where) {
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return `(${this.where}) && (${where})`
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}
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return where
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},
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_getWhereByForeignKey() {
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let result = []
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let whereField = this._getForeignKeyByField();
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if (whereField) {
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result.push(`${whereField} == '${this.dataValue}'`)
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}
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if (this.where) {
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return `(${this.where}) && (${result.join(' || ')})`
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}
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return result.join(' || ')
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},
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_getForeignKeyByField() {
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let fields = this.field.split(',');
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let whereField = null;
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for (let i = 0; i < fields.length; i++) {
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const items = fields[i].split('as');
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if (items.length < 2) {
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continue;
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}
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if (items[1].trim() === 'value') {
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whereField = items[0].trim();
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break;
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}
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}
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return whereField;
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},
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_updateBindData(node) {
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const {
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dataList,
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hasNodes
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} = this._filterData(this._treeData, this.selected)
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let isleaf = this._stepSearh === false && !hasNodes
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if (node) {
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node.isleaf = isleaf
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}
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this.dataList = dataList
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this.selectedIndex = dataList.length - 1
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if (!isleaf && this.selected.length < dataList.length) {
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this.selected.push({
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value: null,
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text: "请选择"
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})
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}
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return {
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isleaf,
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hasNodes
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}
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},
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_updateSelected() {
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let dl = this.dataList
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let sl = this.selected
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let textField = this.map.text
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let valueField = this.map.value
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for (let i = 0; i < sl.length; i++) {
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let value = sl[i].value
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let dl2 = dl[i]
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for (let j = 0; j < dl2.length; j++) {
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let item2 = dl2[j]
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if (item2[valueField] === value) {
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sl[i].text = item2[textField]
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break
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}
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}
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}
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},
|
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_filterData(data, paths) {
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let dataList = []
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let hasNodes = true
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dataList.push(data.filter((item) => {
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return (item.parent_value === null || item.parent_value === undefined || item.parent_value === '')
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}))
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for (let i = 0; i < paths.length; i++) {
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let value = paths[i].value
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let nodes = data.filter((item) => {
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return item.parent_value === value
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})
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if (nodes.length) {
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dataList.push(nodes)
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} else {
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hasNodes = false
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}
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}
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return {
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dataList,
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hasNodes
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}
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},
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_extractTree(nodes, result, parent_value) {
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let list = result || []
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let valueField = this.map.value
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for (let i = 0; i < nodes.length; i++) {
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let node = nodes[i]
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|
let child = {}
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for (let key in node) {
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if (key !== 'children') {
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child[key] = node[key]
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}
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}
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if (parent_value !== null && parent_value !== undefined && parent_value !== '') {
|
child.parent_value = parent_value
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}
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result.push(child)
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let children = node.children
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if (children) {
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this._extractTree(children, result, node[valueField])
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}
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}
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},
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_extractTreePath(nodes, result) {
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let list = result || []
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for (let i = 0; i < nodes.length; i++) {
|
let node = nodes[i]
|
|
let child = {}
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for (let key in node) {
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if (key !== 'children') {
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child[key] = node[key]
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}
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}
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result.push(child)
|
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let children = node.children
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if (children) {
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this._extractTreePath(children, result)
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}
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}
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},
|
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_findNodePath(key, nodes, path = []) {
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let textField = this.map.text
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let valueField = this.map.value
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for (let i = 0; i < nodes.length; i++) {
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let node = nodes[i]
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let children = node.children
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let text = node[textField]
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let value = node[valueField]
|
|
path.push({
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value,
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text
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})
|
|
if (value === key) {
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return path
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}
|
|
if (children) {
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const p = this._findNodePath(key, children, path)
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if (p.length) {
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return p
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}
|
}
|
|
path.pop()
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}
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return []
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}
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}
|
}
|
