JTreeDict.vue
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<template>
<a-tree-select
allowClear
labelInValue
style="width: 100%"
:disabled="disabled"
:dropdownStyle="{ maxHeight: '400px', overflow: 'auto' }"
:placeholder="placeholder"
:loadData="asyncLoadTreeData"
:value="treeValue"
:treeData="treeData"
@change="onChange"
@search="onSearch">
</a-tree-select>
</template>
<script>
import {getAction} from '@/api/manage'
export default {
name: 'JTreeDict',
data() {
return {
treeData: [],
treeValue: null,
url_root: "/sys/category/loadTreeRoot",
url_children: "/sys/category/loadTreeChildren",
url_view: '/sys/category/loadOne',
}
},
props: {
value: {
type: String,
required: false
},
placeholder: {
type: String,
default: '请选择',
required: false
},
parentCode: {
type: String,
default: '',
required: false
},
field: {
type: String,
default: 'id',
required: false
},
root: {
type: Object,
required: false,
default: () => {
return {
pid: '0'
}
}
},
async: {
type: Boolean,
default: false,
required: false
},
disabled: {
type: Boolean,
default: false,
required: false
}
},
watch: {
root: {
handler(val) {
console.log("root-change", val)
},
deep: true
},
parentCode: {
handler() {
this.loadRoot()
}
},
value: {
handler() {
this.loadViewInfo()
}
}
},
created() {
this.loadRoot()
this.loadViewInfo()
},
model: {
prop: 'value',
event: 'change'
},
methods: {
loadViewInfo() {
if (!this.value || this.value == "0") {
this.treeValue = null
} else {
let param = {
field: this.field,
val: this.value
}
getAction(this.url_view, param).then(res => {
if (res.success) {
this.treeValue = {
value: this.value,
label: res.result.name
}
}
})
}
},
loadRoot() {
let param = {
async: this.async,
pcode: this.parentCode
}
getAction(this.url_root, param).then(res => {
if (res.success) {
this.handleTreeNodeValue(res.result)
this.treeData = [...res.result]
} else {
this.$message.error(res.message)
}
})
},
asyncLoadTreeData(treeNode) {
return new Promise((resolve) => {
if (!this.async) {
resolve()
return
}
if (treeNode.$vnode.children) {
resolve()
return
}
let pid = treeNode.$vnode.key
let param = {
pid: pid
}
getAction(this.url_children, param).then(res => {
if (res.success) {
this.handleTreeNodeValue(res.result)
this.addChildren(pid, res.result, this.treeData)
this.treeData = [...this.treeData]
}
resolve()
})
})
},
addChildren(pid, children, treeArray) {
if (treeArray && treeArray.length > 0) {
for (let item of treeArray) {
if (item.key == pid) {
if (!children || children.length == 0) {
item.leaf = true
} else {
item.children = children
}
break
} else {
this.addChildren(pid, children, item.children)
}
}
}
},
handleTreeNodeValue(result) {
let storeField = this.field == 'code' ? 'code' : 'key'
for (let i of result) {
i.value = i[storeField]
i.isLeaf = (!i.leaf) ? false : true
if (i.children && i.children.length > 0) {
this.handleTreeNodeValue(i.children)
}
}
},
onChange(value) {
console.log(value)
if (!value) {
this.$emit('change', '');
} else {
this.$emit('change', value.value);
}
this.treeValue = value
},
onSearch(value) {
console.log(value)
},
getCurrTreeData() {
return this.treeData
}
}
}
</script>