selector-picker.vue
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<template>
<view class="w-picker-view">
<picker-view class="d-picker-view" :indicator-style="itemHeight" :value="pickVal" @change="handlerChange">
<picker-view-column>
<view class="w-picker-item" v-for="(item,index) in range" :key="index">{{item[nodeKey]}}</view>
</picker-view-column>
</picker-view>
</view>
</template>
<script>
export default {
props:{
itemHeight:{
type:String,
default:"44px"
},
options:{
type:[Array,Object],
default(){
return []
}
},
value:{
type:String,
default:""
},
defaultType:{
type:String,
default:"label"
},
defaultProps:{
type:Object,
default(){
return{
label:"label",
value:"value"
}
}
}
},
data() {
return {
pickVal:[]
};
},
computed:{
nodeKey(){
return this.defaultProps.label;
},
nodeValue(){
return this.defaultProps.value;
},
range(){
return this.options
}
},
watch:{
value(val){
if(this.options.length!=0){
this.initData();
}
},
options(val){
this.initData();
}
},
created() {
if(this.options.length!=0){
this.initData();
}
},
methods:{
initData(){
let dVal=this.value||"";
let data=this.range;
let pickVal=[0];
let cur=null;
let label="";
let value,idx;
if(this.defaultType==this.nodeValue){
value=data.find((v)=>v[this.nodeValue]==dVal);
idx=data.findIndex((v)=>v[this.nodeValue]==dVal);
}else{
value=data.find((v)=>v[this.nodeKey]==dVal);
idx=data.findIndex((v)=>v[this.nodeKey]==dVal);
}
pickVal=[idx!=-1?idx:0];
this.$nextTick(()=>{
this.pickVal=pickVal;
});
if(this.defaultType==this.nodeValue){
this.$emit("change",{
result:value?value[this.nodeKey]:data[0][this.nodeKey],
value:dVal||data[0][this.nodeKey],
obj:value?value:data[0]
})
}else{
this.$emit("change",{
result:dVal||data[0][this.nodeKey],
value:value?value[this.nodeValue]:data[0][this.nodeValue],
obj:value?value:data[0]
})
}
},
handlerChange(e){
let arr=[...e.detail.value];
let pickVal=[arr[0]||0];
let data=this.range;
let cur=data[arr[0]];
let label="";
let value="";
this.$nextTick(()=>{
this.pickVal=pickVal;
});
this.$emit("change",{
result:cur[this.nodeKey],
value:cur[this.nodeValue],
obj:cur
})
}
}
}
</script>
<style lang="scss">
@import "./w-picker.css";
</style>