I am trying to show an array of data to 'bootstrap selectpicker'.
When I use just plain 'select' element without attaching 'selectpicker'
class, it displays all of data, but when I use 'selectpicker' it won't show
any of data.
I am using vue.js.
Below are the partial code.
select picker element
<select class="selectpicker">
<option v-for="dumpdata in dumpdatas">{{ dumpdata }}</option>
</select>
Getting dumpdatas array
axios.get('/api/getDumpDatas')
.then(response => {
this.dumpdatas = res.data;
});
And the above dumpdatas will be saved like a single array. ['A', 'B', 'C'].
dumpdatas variable in vue is defined like
data() {
return {
dumpdatas: []
}
}
Why selectpicker does not show a single option item, while using just plain select element properly display every item?
Image of when I use selectpicker, not displaying any data
Image when I use just plain select element with same data pulling method.
Related
I am using vuejs3 and I want to make a filter. When user click to the link I want to append the url and push it to browser address bar for now. Later I will do ajax request to update page with product list.
So far I am able to send parameters to URL, but only one item from one group.From first color group I want user to select only one but from second size group I want user to select multiple.
I want this type of URL: localhost:8080/product?color=red&size=medium&size=large
<template>
<div class="products">
<div class="multi_filters">
<h1>Multi Filter By Color</h1>
Red color
Blue color
</div>
<div class="single_filter">
<h1>Multi Size</h1>
Medium
Large
</div>
</div>
</template>
<script>
export default {
data() {
return {
filters:{},
selectedFilters:{}
}
},
methods:{
activateFilter(key,value){
this.selectedFilters = Object.assign({},this.selectedFilters,{[key]:value})
console.log(this.selectedFilters)
this.$router.replace({
query: {
...this.selectedFilters
}
})
}
}
}
</script>
You are expecting size to be an array, this post will helps.
Submitting multi-value form fields, i.e. submitting arrays through GET/POST vars, can be done several different ways, as a standard is not necessarily spelled out.
Three possible ways to send multi-value fields or arrays would be:
?cars[]=Saab&cars[]=Audi (Best way- PHP reads this into an array)
?cars=Saab&cars=Audi (Bad way- PHP will only register last value)
?cars=Saab,Audi (Haven't tried this)
In vuejs the elements are assigned an attribute starting 'data-v-***'
I could not find any docs about fetching this value so ended up using refs and grabbing the attributes of the main node:
<template>
<div class="m-colour-picker" ref="thisContainer">
...
</div>
</template>
const attributes = this.$refs.thisContainer.getAttributeNames();
let dataAttribute = '';
attributes.forEach((attribute: string) => {
if (attribute.substring(0, 5) === 'data-') {
dataAttribute = attribute;
}
});
But it feels a little forced.. is there a method in vue to fetch this already built in?
That has little to do with Vue.js. Data attributes for any element are automatically synced with it's internal dataset object.
Example:
console.log(foobar.dataset);
console.log(foobar.dataset.vFoo);
console.log(foobar.dataset.vBar);
// notice how data attributes containing more than the initial data- dash
// are automatically transformed to camel case:
// data-v-foo-bar ===> dataset.vFooBar
console.log(foobar.dataset.vFooBar);
// if all you care about is the names of the attributes:
console.log(Object.keys(foobar.dataset));
<div id="foobar" data-v-foo="bar" data-v-bar="baz" data-v-foo-bar="foobaz"></div>
the application i am working on includes 3 or 4 pages where the user is asked to enter some data in various fields (input, select). If the user wants to go back to a page, the previous data needs to be displayed (I get it from the store, using computed properties).
It works well on input type fields, however i get a warning with select type fields :
[Vue warn]: <select multiple v-model="tax"> expects an Array value for its binding, but got String
Here is an extract of the code in the template section of the selectTax.vue file :
<select v-model="tax" multiple="multiple">
<option value="tax1">Tax1</option>
<option value="tax2">Tax2</option>
<option value="tax3">Tax3</option>
Here is an extract of the code in the script section of the selectTax.vue file :
tax: {
get() {
return this.$store.getters.taxtype;
},
set(value) {
this.$store.commit("setTaxType", value[0]);
}
}
The problem is that the computed property tax is a string, not an array.
Is there any proper way to fix it ? Thanks for helping.
When using <select multiple the data model is not a string, but an array.
This is because the user can select more than one option.
You have 2 options:
update the data type for this.$store.getters.taxtype to be initialized with an array (empty most likely) and update
set(value) {
this.$store.commit("setTaxType", value);
}
or remote multiple from the select
I'm using TestCafe 1.8.1 and have a slightly different case than the documentation at https://devexpress.github.io/testcafe/documentation/recipes/test-select-elements.html - my problem is that the example assumes the value of an <option> and its text content will be the same, and in my case, the value is a very unpredictable value.
I can select an item in the dropdown without trouble, using .withText(value) to filter the options, and .click(item) to select it. However, my app then refreshes the page, and ought to re-select the relevant item as it loads up. This is not working and I want to test for it.
So I might have options in the select like:
<select id="foo">
<option value="1234">100x100</option>
<option value="5432">200x100</option>
<option value="9999">100x200</option>
</select>
Obviously, if I test with .expect(citySelect.value).eql('London'); as in the docs it'll fail because the values are nothing like the text content e.g. having clicked '200x100' in the dropdown the value becomes "5432".
Do I need to use a ClientFunction to get the text of the selected item? I understand it's quite awkward passing data into a ClientFunction, would I need to pass the id of the select so the ClientFunction can getElementById to find the select and retrieve it's selected option's text content? It all sounds like the wrong way to be doing things.
Please check the following example that uses ClientFunction API to obtain an option value:
import { Selector, ClientFunction } from 'testcafe';
fixture `Fixture 1`
.page `https://kys0l.csb.app/`;
test('Test 1', async t => {
const selector = Selector('select');
const getValue = ClientFunction((index) => {
const select = selector();
return select.options[index].value;
}, { dependencies: { selector } });
await t
.expect(getValue(0)).eql('1234')
.expect(getValue(1)).eql('5432')
.expect(getValue(2)).eql('9999');
});
See also: Obtain Client-Side Info.
Try using
.expect(citySelect.innertext).eql('London');
Good day. I'm using Vue.js to render an arbitrary number of select elements from the data in a component.
Here's sample JSON data that indicates there are two select elements, each with one or more options.
{
"dropdowns":[
{
"cd":"UG9ydGZvbGlv",
"formname":"sp_filter_UG9ydGZvbGlv",
"nm":"Portfolio",
"selected":"1a",
"options":[
{
"cd":"1a",
"val":"Option 1A"
}
]
},
{
"cd":"UHJvZHVjdCBOYW1l",
"formname":"sp_filter_UHJvZHVjdCBOYW1l",
"nm":"Product Name",
"selected":"2b",
"options":[
{
"cd":"2a",
"val":"Option 2A"
},
{
"cd":"2b",
"val":"Option 2B"
}
]
}
]
}
Here's the template HTML:
<form>
<div v-for="dropdown in dropdowns">
<div v-if="dropdown.availableToView">
<h4>{{dropdown.nm}}</h4>
<select v-model="dropdown.selected" v-on:change="triggerUpdate">
<option value="">(Make a selection)</option>
<option v-for="option in dropdown.options" :value="option.cd">{{option.val}}</option>
</select>
</div>
</div>
</form>
So far so good.
I've got the data loading and Vue is building the dropdowns.
When the user changes any select box (remember there can be an arbitrary number of them), the trigger action needs to submit ALL of the elements in the form via ajax. It sounds like the most correct option is to bind the form fields to the underlying component data, as I've done.
My triggerUpdate looks like this:
methods: {
triggerUpdate: function() {
axios({
method: "post",
url: actionURL,
data: this.dropdowns
})
.then(response => (this.data = response));
}
}
...but this submits the entire dropdowns data element, including all of the options in each select box. It's unnecessary to send all of the options in. I just want to send each field name along with its selected option (i.e. the "value").
I know i could serialize the whole form and make that my ajax payload. But that seems to be making an "end run" around Vue.js. Everyone talks about having your form fields bound to the Vue model...is it then correct to basically ignore the model when making an ajax request whose purpose is to then update the model?
I'm relatively new to Vue.js so I'd appreciate help with what I'm overlooking here. How should I go about sending in the data from the form (a) while using proper Vue.js binding and (b) without sending extraneous data?
Thanks for your time.
If you need to post only the selected values, and you store those in each dropdown's selected property, the sensible approach seems to be just mapping it to a simple array of name/value objects.
Try this (it assumes the name of each field is the formname property, if it isn't you can just replace it):
var submitData = this.dropdowns.map((dropdown) => {
return { name: dropdown.formname, value: dropdown.selected };
});
Then you send submitData in your ajax request.