dykj-football/uni_modules/uni-data-picker/components/uni-data-pickerview/uni-data-picker.js

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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.$watch(() => {
var al = [];
['pageCurrent',
'pageSize',
'spaceInfo',
'value',
'modelValue',
'localdata',
'collection',
'action',
'field',
'orderby',
'where',
'getont',
'getcount',
'gettree'
].forEach(key => {
al.push(this[key])
});
return al
}, (newValue, oldValue) => {
let needReset = false
for (let i = 2; i < newValue.length; i++) {
if (newValue[i] != oldValue[i]) {
needReset = true
break
}
}
if (newValue[0] != oldValue[0]) {
this.page.current = this.pageCurrent
}
this.page.size = this.pageSize
this.onPropsChange()
})
this._treeData = []
},
methods: {
onPropsChange() {
this._treeData = [];
},
// 填充 pickview 数据
async loadData() {
if (this.isLocalData) {
this.loadLocalData();
} else if (this.isCloudDataList) {
this.loadCloudDataList();
} else if (this.isCloudDataTree) {
this.loadCloudDataTree();
}
},
// 加载本地数据
async loadLocalData() {
this._treeData = [];
this._extractTree(this.localdata, this._treeData);
let inputValue = this.dataValue;
if (inputValue === undefined) {
return;
}
if (Array.isArray(inputValue)) {
inputValue = inputValue[inputValue.length - 1];
if (typeof inputValue === 'object' && inputValue[this.map.value]) {
inputValue = inputValue[this.map.value];
}
}
this.selected = this._findNodePath(inputValue, this.localdata);
},
// 加载 Cloud 数据 (单列)
async loadCloudDataList() {
if (this.loading) {
return;
}
this.loading = true;
try {
let response = await this.getCommand();
let responseData = response.result.data;
this._treeData = responseData;
this._updateBindData();
this._updateSelected();
this.onDataChange();
} catch (e) {
this.errorMessage = e;
} finally {
this.loading = false;
}
},
// 加载 Cloud 数据 (树形)
async loadCloudDataTree() {
if (this.loading) {
return;
}
this.loading = true;
try {
let commandOptions = {
field: this._cloudDataPostField(),
where: this._cloudDataTreeWhere()
};
if (this.gettree) {
commandOptions.startwith = `${this.selfField}=='${this.dataValue}'`;
}
let response = await this.getCommand(commandOptions);
let responseData = response.result.data;
this._treeData = responseData;
this._updateBindData();
this._updateSelected();
this.onDataChange();
} catch (e) {
this.errorMessage = e;
} finally {
this.loading = false;
}
},
// 加载 Cloud 数据 (节点)
async loadCloudDataNode(callback) {
if (this.loading) {
return;
}
this.loading = true;
try {
let commandOptions = {
field: this._cloudDataPostField(),
where: this._cloudDataNodeWhere()
};
let response = await this.getCommand(commandOptions);
let responseData = response.result.data;
callback(responseData);
} catch (e) {
this.errorMessage = e;
} finally {
this.loading = false;
}
},
// 回显 Cloud 数据
getCloudDataValue() {
if (this.isCloudDataList) {
return this.getCloudDataListValue();
}
if (this.isCloudDataTree) {
return this.getCloudDataTreeValue();
}
},
// 回显 Cloud 数据 (单列)
getCloudDataListValue() {
// 根据 field's as value标识匹配 where 条件
let where = [];
let whereField = this._getForeignKeyByField();
if (whereField) {
where.push(`${whereField} == '${this.dataValue}'`)
}
where = where.join(' || ');
if (this.where) {
where = `(${this.where}) && (${where})`
}
return this.getCommand({
field: this._cloudDataPostField(),
where
}).then((res) => {
this.selected = res.result.data;
return res.result.data;
});
},
// 回显 Cloud 数据 (树形)
getCloudDataTreeValue() {
return this.getCommand({
field: this._cloudDataPostField(),
getTreePath: {
startWith: `${this.selfField}=='${this.dataValue}'`
}
}).then((res) => {
let treePath = [];
this._extractTreePath(res.result.data, treePath);
this.selected = treePath;
return treePath;
});
},
getCommand(options = {}) {
/* eslint-disable no-undef */
let db = uniCloud.database(this.spaceInfo)
const action = options.action || this.action
if (action) {
db = db.action(action)
}
const collection = options.collection || this.collection
db = db.collection(collection)
const where = options.where || this.where
if (!(!where || !Object.keys(where).length)) {
db = db.where(where)
}
const field = options.field || this.field
if (field) {
db = db.field(field)
}
const orderby = options.orderby || this.orderby
if (orderby) {
db = db.orderBy(orderby)
}
const current = options.pageCurrent !== undefined ? options.pageCurrent : this.page.current
const size = options.pageSize !== undefined ? options.pageSize : this.page.size
const getCount = options.getcount !== undefined ? options.getcount : this.getcount
const getTree = options.gettree !== undefined ? options.gettree : this.gettree
const getOptions = {
getCount,
getTree
}
if (options.getTreePath) {
getOptions.getTreePath = options.getTreePath
}
db = db.skip(size * (current - 1)).limit(size).get(getOptions)
return db
},
_cloudDataPostField() {
let fields = [this.field];
if (this.parentField) {
fields.push(`${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 []
}
}
}