我有一个要求,我必须在数据列表中提出建议,并且当用户选择任何数据列表选项时,我都必须相应地更新其他输入字段。
这是我的输入字段和数据列表代码。
<input type="text" v-model="party.name" class="form-control form-control-sm shadow-sm" @input="searchPartyByName()" placeholder="Party name" list="queriedParties"/>
<datalist id="queriedParties">
<option v-for="party in queriedParties">{{party.name}}</option>
</datalist>
现在,我想要的是,当用户在特定数据列表选项上击中enter
或click
时,我想更新此输入字段(默认情况下,数据列表中的那个)也想设置其他表单字段。
我已经将其他表单字段与party
数据对象绑定了。因此,只有通过datalist选项上的任何事件可以更新party
数据对象,我才会感到高兴!我想要这样的东西。
<option v-for="party in queriedParties" @click="setParty(party)">{{party.name}}</option>
我已经尝试了上面给出的示例,但是它不起作用。我也尝试过使用@change
,但是它也不起作用!
有什么办法可以做到这一点?我检查了几乎所有可用的文章,jsfiddles和codepens,但没有一个能解决我的问题。
答案 0 :(得分:1)
datalist 没有事件,但输入有。您应该执行以下操作:
<template>
<input type="text" v-model="party.name" .... />
<datalist id="queriedParties">
<option v-for="party in queriedParties">{{party.name}}</option>
</datalist>
</template>
<script>
export default {
watch: {
party: {
deep: true,
handler (old_party, new_party) {
if (old_party.name !== new_party.name) this.searchPartyByName(new_party.name)
}
}
}
</script>
答案 1 :(得分:0)
您的queriedParties
似乎是一个对象数组。如果您只有一个字符串数组,这行得通吗?
对于对象,请使用以下内容:
<template>
<div class="sourceselection">
<div>
<div class="jumbotron">
<h2><span class="glyphicon glyphicon-list-alt"></span> News List</h2>
<h4>Select News Source</h4>
<input v-model="source" list="newssources-list" v-on:input="sourceChanged"
name="source-selection" id="source-selection" class="form-control"
placeholder="Please specify news source ..."/>
<datalist id="newssources-list">
<option v-for="source in sources" v-bind:value="source.name" v-bind:label="source.name"></option>
</datalist>
<div v-if="deepSource">
<h6>{{deepSource.description}}</h6>
<a v-bind:href="deepSource.url" class="btn btn-primary" target="_blank">Go To {{deepSource.name}} Website</a>
</div>
</div>
</div>
</div>
</template>
<script>
export default {
name: 'sourceselection',
data () {
return {
sources: [],
source: '',
deepSource: ''
}
},
methods: {
sourceChanged: function(e) {
console.log("source = "+this.source+" new value = "+e.target.value);
var newSource = e.target.value;
// only action if value is different from current deepSource
if (newSource!= this.deepSource.name) {
for (var i=0; i<this.sources.length; i++) {
if (this.sources[i].name == newSource) {
this.deepSource = this.sources[i];
this.source = this.deepSource.name;
}
}
this.$emit('sourceChanged', this.deepSource.id);
}
}
},
created: function () {
var api = "https://newsapi.org/v1/sources?language=en";
this.axios.get(api).then((response) => {
this.sources = response.data.sources;
});
}
}
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
</style>
答案 2 :(得分:0)
datalist
中没有事件,因此无法处理,最好编写自己的列表。这是一个示例open in codepen:
//pug
#app
.form-group.has-feedback
input.input-search.form-control(type='text', v-model='word', placeholder='Search')
ul#list(v-if='Object.keys(filtered_projects).length > 0')
li(v-for='(value, key) in filtered_projects', @click='gotoProjectPage(key)')
span {{value}}
p {{key}}
span.glyphicon.glyphicon-search.form-control-feedback
/*css*/
body {
margin: 10px;
}
#app {
width: 400px;
}
#list {
font-size: 12px;
list-style: none;
margin: 0;
padding: 5px 0;
background-color: white;
border-radius: 0 0 5px 5px;
border: 1px #ccc solid;
}
#list li {
display: block;
padding: 5px 15px;
}
#list li:hover {
background-color: #ccc;
}
#list li span {
font-weight: 550;
}
#list li p {
margin: 5px 0 0;
}
//js
var app = new Vue({
el: '#app',
data: {
word: '',
projects: {"DataCenterMetro":"TEST1","IFF_Handway":"国际香料","SPH_Handway":"上药控股广东有限公司空调系统","QingTang_GZ":"广州地铁_清塘站","BTE_Handway":"白天鹅宾馆","NSSC_SZ":"深圳地铁_南山书城站","TA0301_Handway":"天安云谷二期"}
},
computed: {
filtered_projects: function () {
var vm = this, result = {};
if (vm.word) {
for(var key in vm.projects) {
if(key.toLowerCase().indexOf(vm.word) != -1 || vm.projects[key].toLowerCase().indexOf(vm.word) != -1)
result[key] = vm.projects[key];
}
}
return result;
}
},
created: function () {
var vm = this;
//TODO get projects
},
methods: {
gotoProjectPage: function (key) {
console.log('/map_login?project=' + key);
//TODO handle
}
},
});