This is Vue 3 implementation, for vue2 look at the vue-2 branch
In browser applications, address bar should be the most important source of truth. When user performs data filtering, sorting, pagination, the url should change so that the result of the filtering is bookmarkable/shareable.
Traditionally vue component would listen on query change and copy the query params to an internal model. This would be then used by an input component. Whenever the input is changed, an event listener (after optional debouncing) would propagate the change back to the query.
This library does all of this on the background, leaving you with just a couple of lines of code.
yarn add @oarepo/vue-query-synchronizer@^3.0.0
yarn build
cd dist; yarn link
cd your_project
yarn link @oarepo/vue-query-synchronizer
Add the following to main.js (in quasar boot/....js)
import QuerySynchronizer from '@oarepo/vue-query-synchronizer'
Vue.use(QuerySynchronizer, {
router: router
})See src/main.ts for the whole file.
In router configuration, mark which query parameters with a given type and default value should be synchronized with the component state:
import { query } from '@oarepo/vue-query-synchronizer'
const routes = [
{
path: '/',
name: 'home',
meta: {
query: {
'page': 'int:1'
}
},
component: Home
}
]Full example at src/router.ts
Call useQuery() and use the result as usual (for example as model for input):
<template>
<div>
<input v-model="query.filter"><br><br>
</div>
</template>
<script>
import { useQuery } from '@oarepo/vue-query-synchronizer'
export default {
setup() {
return {
query: useQuery(),
}
}
}
</script>Full example at src/CompositionHome.vue
In component, use this.$query to access parsed query. Then
you can use properties at $query, for example
$query.filter, $query.sort as normal models for
html inputs or as models for any other components:
<template>
<div>
<input v-model="$query.filter"><br><br>
</div>
</template>
<script>
export default {
name: 'home',
}
</script>Full example at src/Home.vue
yarn install
yarn run serve
yarn run build
During plugin registration, router must be passed in.
import QuerySynchronizer from '@oarepo/vue-query-synchronizer'
Vue.use(QuerySynchronizer, {
router: router,
datatypes: {
name: handler
},
debug: false,
navigationOperation: 'push' | 'replace' |
((query, router) => 'push' | 'replace')
})Setting debug to true will log the parsed and serialized query parameters.
Navigation operation can be used to override the default operation called on the router (push). Either method name (push, replace) might be be passed or a callable, that can decide which operation to perform.
The potential query parameters with data types are stored in route's
meta.query property in the form of param_name:definition.
Definition can be:
-
default string value (
test) -
datatype followed by a default value (
int:1) -
an object:
{
datatype: 'string',
defaultValue: null
}The object can define a datatype, which is implicitly string. The datatype
defines how the value from URL is converted to model and vice versa. Datatypes
are pluggable, see Datatype section later in the readme for details.
If defaultValue is set and a value is not present in the URL, the model
is set to this value. URL is not changed. When a default value is
programmatically set on the parameter (for example, user enters it in input),
the parameter is removed from the url.
Note: This means that if you change the default value of a parameter during the lifetime of your application, user's bookmarks will start behaving differently as your code will receive the new default values, not the ones used when user bookmarked the page.
A datatype provides means to convert url parameter into an internal model value and vice versa. The pre-installed datatypes are:
- string - a no-op converter
- number - converts string value of the number in url into a javascript number
- bool - if the parameter is present (with whatever value), returns true else false
- array - returns an array of string (for parameters with multiple values)
A custom datatype can be implemented as follows:
Vue.use(QuerySynchronizer, {
router: router,
datatypes: {
lowecase: {
parseDefault(value) {
// parses the default value from the strings above
return (value || '').toLowerCase()
},
parse(value, defaultValue) {
// value is: undefined if property is not present in the url
// null if property is in url but without a value
// string value if property is written as url?key=value
// note: defaultValue has been parsed previously so that
// it already is in the javascript format
return value ? value.toLowerCase() : defaultValue
},
serialize (value, defaultValue) {
// this method must return undefined, null or string instance
// returning undefined will remove the property from query
if (value === defaultValue) { return undefined }
// returning null will put url?key without a value to the url
if (value === '') { return null }
// will put url?key=value into the url
return value.toLowerCase()
}
}
}
})Default datatypes are implemented by importable StringDatatype,
IntDatatype, BoolDatatype, ArrayDatatype.
You can use them to create composite datatypes, for example an array of numbers.
ArrayOfNumbersDatatype = {
parseDefault(value) {
return ArrayDatatype.parseDefault(value).map(
x => IntDatatype.parse(x, null)
)
},
parse(value, defaultValue) {
return ArrayDatatype.parse(value, defaultValue).
map(x=>IntDatatype.parse(x, null))
},
serialize (value, defaultValue) {
return ArrayDatatype.serialize(
value.map(x => NumberDataType.serialize(value, null)),
defaultValue)
}
}The following signals can be specified at the query level:
import { query } from '@oarepo/vue-query-synchronizer'
const routes = [
{
path: '/',
name: 'home',
meta: {
query: {...},
querySettings: {
onInit (paramsList) { paramsList },
onLoad (query) { /* do something with query */ },
onChange (newQuery, query) { /* do something with newQuery */ }
}
},
component: Home
}
]onInit is called when the query is loaded. This signal can be used for example to set default values stored in local storage or on the server.
called after browser query parameters are parsed and before they are returned to the component.
called after just before the url is changed. Can be used to store the values to local storage so that the next onInit picks them and uses them as default. The callback takes two parameters:
newQueryis the new query that will be set to URL. Does not contain props with default valuesquerycontains the whole current query object with resolved default values
See docs