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