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export default {
props: {
localdata: {
type: [Array, 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: 20
},
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 []
}
},
preload: {
type: Boolean,
default: false
},
stepSearh: {
type: Boolean,
default: true
},
selfField: {
type: String,
default: ''
},
parentField: {
type: String,
default: ''
},
multiple: {
type: Boolean,
default: false
}
},
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.localdata.length > 0
},
postField() {
let fields = [this.field];
if (this.parentField) {
fields.push(`${this.parentField} as parent_value`);
}
return fields.join(',');
}
},
created() {
this.$watch(() => {
var al = [];
['pageCurrent',
'pageSize',
'value',
'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 = []
},
getCommand(options = {}) {
/* eslint-disable no-undef */
let db = uniCloud.database()
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
},
getNodeData(callback) {
if (this.loading) {
return
}
this.loading = true
this.getCommand({
field: this.postField,
where: this._pathWhere()
}).then((res) => {
this.loading = false
this.selected = res.result.data
callback && callback()
}).catch((err) => {
this.loading = false
this.errorMessage = err
})
},
getTreePath(callback) {
if (this.loading) {
return
}
this.loading = true
this.getCommand({
field: this.postField,
getTreePath: {
startWith: `${this.selfField}=='${this.value}'`
}
}).then((res) => {
this.loading = false
let treePath = []
this._extractTreePath(res.result.data, treePath)
this.selected = treePath
callback && callback()
}).catch((err) => {
this.loading = false
this.errorMessage = err
})
},
loadData() {
if (this.isLocaldata) {
this._processLocalData()
return
}
if (this.value.length) {
this._loadNodeData((data) => {
this._treeData = data
this._updateBindData()
this._updateSelected()
})
return
}
if (this.stepSearh) {
this._loadNodeData((data) => {
this._treeData = data
this._updateBindData()
})
} else {
this._loadAllData((data) => {
this._treeData = []
this._extractTree(data, this._treeData, null)
this._updateBindData()
})
}
},
_loadAllData(callback) {
if (this.loading) {
return
}
this.loading = true
this.getCommand({
field: this.postField,
gettree: true,
startwith: `${this.selfField}=='${this.value}'`
}).then((res) => {
this.loading = false
callback(res.result.data)
this.onDataChange()
}).catch((err) => {
this.loading = false
this.errorMessage = err
})
},
_loadNodeData(callback, pw) {
if (this.loading) {
return
}
this.loading = true
this.getCommand({
field: this.postField,
where: pw || this._postWhere(),
pageSize: 500
}).then((res) => {
this.loading = false
callback(res.result.data)
this.onDataChange()
}).catch((err) => {
this.loading = false
this.errorMessage = err
})
},
_pathWhere() {
let result = []
let where_field = this._getParentNameByField();
if (where_field) {
result.push(`${where_field} == '${this.value}'`)
}
if (this.where) {
return `(${this.where}) && (${result.join(' || ')})`
}
return result.join(' || ')
},
_postWhere() {
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(`(${result.join(' || ')})`)
}
return where.join(' && ')
},
_nodeWhere() {
let result = []
let selected = this.selected
if (selected.length) {
result.push(`${this.parentField} == '${selected[selected.length - 1].value}'`)
}
if (this.where) {
return `(${this.where}) && (${result.join(' || ')})`
}
return result.join(' || ')
},
_getParentNameByField() {
const fields = this.field.split(',');
let where_field = 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') {
where_field = items[0].trim();
break;
}
}
return where_field
},
_isTreeView() {
return (this.parentField && this.selfField)
},
_updateSelected() {
var dl = this.dataList
var sl = this.selected
for (var i = 0; i < sl.length; i++) {
var value = sl[i].value
var dl2 = dl[i]
for (var j = 0; j < dl2.length; j++) {
var item2 = dl2[j]
if (item2.value === value) {
sl[i].text = item2.text
break
}
}
}
},
_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
}
},
_filterData(data, paths) {
let dataList = []
let hasNodes = true
dataList.push(data.filter((item) => {
return item.parent_value === undefined
}))
for (let i = 0; i < paths.length; i++) {
var value = paths[i].value
var 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 || []
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 !== undefined) {
child.parent_value = parent_value
}
result.push(child)
let children = node.children
if (children) {
this._extractTree(children, result, node.value)
}
}
},
_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 = []) {
for (let i = 0; i < nodes.length; i++) {
let {
value,
text,
children
} = nodes[i]
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 []
},
_processLocalData() {
this._treeData = []
this._extractTree(this.localdata, this._treeData)
var inputValue = this.value
if (inputValue === undefined) {
return
}
if (Array.isArray(inputValue)) {
inputValue = inputValue[inputValue.length - 1]
if (typeof inputValue === 'object' && inputValue.value) {
inputValue = inputValue.value
}
}
this.selected = this._findNodePath(inputValue, this.localdata)
}
}
}