Reuse Quasar Dialog plugin with custom component on another component - vue.js

Question

I'm taking the first steps with Quasar.
I want to build a modal window to be reused in forms.
I am using Dialog plugin and q-layout in a custom component.
However, when I use this custom component in another component the dialog plugin methods do not work.
Is there any way to solve this?
util/modal.js
import { Dialog } from "quasar";
export function ModalWindow(CustomComponent) {
Dialog.create({
component:CustomComponent,
ok: {
push: true
},
cancel: {
color: 'negative'
},
persistent: true
})
}
modal/ModalWindow.vue (custom component):
<template>
<q-dialog persistent ref="dialog" #hide="onDialogHide">
<q-layout view="lhh LpR lff" container style="height: 400px" class="bg-grey-3">
<q-toolbar class="bg-primary text-white q-mb-sm">
<q-toolbar-title>
<slot name="titelWindow"></slot>
</q-toolbar-title>
<q-btn v-close-popup flat round dense icon="close" />
</q-toolbar>
<q-form #submit.prevent="submitForm">
<q-card-section>
<slot></slot>
</q-card-section>
<q-card-actions align="right">
<slot name="toolbarBottom"></slot>
</q-card-actions>
</q-form>
</q-layout>
</q-dialog>
</template>
<script>
export default {
methods: {
show () {
this.$refs.dialog.show()
},
hide () {
this.$refs.dialog.hide()
},
onDialogHide () {
this.$emit('hide')
}
}
}
</script>
Call method ModalWindow on a page:
<script>
import { ModalWindow } from 'src/util/modal'
import CustomComponent from "components/modal/MyModalWindow.vue"
export default {
methods: {
showUWin: function(id) {
ModalWindow(CustomComponent)
}
}
}
</script>
So far it works well.
However, as I said,when I use this custom component in another component the dialog plugin methods do not work.
render custom component in another component: MyModalForm.vue
<template>
<MyModalWindow>
<!--Dialog's show method doesn't work-->
</MyModalWindow>
</template>
<script>
export default {
name: 'MyModalForm',
components: {
'MyModalWindow': require('components/modal/MyModalWindow.vue').default,
}
}
</script>
Call method ModalWindow on a page:
<script>
import { ModalWindow } from 'src/util/modal'
import CustomComponent from "components/modal/MyModalForm.vue"
export default {
methods: {
showWin: function(id) {
ModalWindow(CustomComponent)
}
}
}
</script>
I get on de console:
[Vue warn]: Error in mounted hook: "TypeError: this.$refs.dialog.show
is not a function"

Answer 1

I recently got into the same error.
My understanding is that, when you use something like:
Dialog.create({
component: CustomComponent,
...
})
// or
this.$q.dialog({
component: CustomComponent
})
the CustomComponent must directly implement the required show/hide/... methods, as per documentation.
So you have to repeat in each custom component this code (adapting it to the right "ref", specific to your component):
methods: {
show () {
this.$refs.dialog.show()
},
hide () {
this.$refs.dialog.hide()
},
onDialogHide () {
this.$emit('hide')
}
}
and propagate onOk and onCancel events appropriately.
For instance, summarizing everything:
<template>
<MyModalWindow ref="myModalForm" #ok="onOk" />
</template>
<script>
export default {
name: 'MyModalForm',
components: {
'MyModalWindow'
},
methods: {
show() {
this.$refs.myModalForm.show();
},
hide() {
this.$refs.myModalForm.hide();
},
onHide() {
this.$emit('hide');
},
onOk() {
this.$emit('ok');
this.hide();
}
}
}
</script>