I have make my own vuetable-2 component and calling this component every time in component where i want to show list.
I want to reload my vuetable-2 component when ever i perform any action on my parent component.
You can use refresh() for vuetable . So there is many way to trigger that from parent . You can call directly that method by setting ref or use watch in component .
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i'm using vue.js and vuetify.
elements made by parent element exist in my code.
i want to change parent element's class dynamically depending on it's child class, like jQuery has() method.
is vue.js has any way to do this?
jQuery has()
You can access a state if a child property of a child on different ways. (I assume the child class is set based on a certain state).
You could use vuex that keep a state over several components. You could emit a state back to you parent component. Or you could use the ref to access the child components properties.
<component ref="childcomponent"></markdown>
process: function(){
// items is defined object inside data() of the child component
var hasClass= this.$refs.childcomponent.item
}
I'm making a wrapper component and have to clear the vuex when I close the component.
I've registered this component in a menu, and parent component is default main page(init page when page is loaded).
So basically, I have to get the data from main component(which is Map(geo json) and displays markers) to pass down(i'm using vuex to share data) the data to grand-child component which is a wrapper component(leaflet-draw) to display maker(main component, grand parent component) information at grand-child component(menu)
But whenever I reopen the grand-child component, it keeps add up existing data. so let say there's 10 data in main component, and then whenever I open it, it just keep adds data cuz it's a wrapper component, and I have to use mounted() hook to get all data info.
so mounted() hook is called everytime I open it, but when beforeDestroy() is called, mounted() hook doesn't work anymore...
Could you please tell me how to use beforeDestory() or destroyed() hook correctly for the wrapper component...?
Many thanks.
It's over 8000 lines so let me know if you need a test case. I will add the github link.
I would add it as a comment but it says that i need 50 rep anyway; as far as i understood you are fetching the data when your wrapper component mounts so; maybe you should write sth like: if state is populated empty the state then fetch the new data in the function where you fetch the data which should be in your actions.
I have a container where the API calls happen. I need to pass the response I get to another component which is not the child of the above container. I can't pass in props like how you usually do since it is not a child component of the above container. What I do is, I pass the response to the above container's child component and from there I use :
this.props.navigation.navigate('Whatever',{
reason: this.state.reason
});
To pass in the reason as prop to the "Whatever" component. Now, the problem is this "reason" prop does not get updated when it changes in the container from where it is being passed.
Now, I am aware that since we are not passing props like how they are usually passed that's why we won't be able to get the updated props in whatever component. I am aware that I might have to change the structure of my app as well, but I cannot afford that right now.
Is there any way via which I can update the reason prop in the whatever component?
Thanks in advance.
You can use params in react navigation
--updating params https://reactnavigation.org/docs/params/#updating-params
--passing params https://reactnavigation.org/docs/params/#passing-params-to-a-previous-screen
--passing params to nested component https://reactnavigation.org/docs/params/#passing-params-to-nested-navigators
I am attempting to access a child component's $refs inside a b-modal.
On page load, I can see with vue dev tools that "agent-edit" has not been created. If I put the component outside of b-modal, it does show and I can access it -- however I need this to load inside a modal. How can I access $refs.editAgent? Can I force this child component to load with the page?
<b-modal id="editModal" ref="editModal" title="Edit Agent" size="lg">
<agent-edit ref="editAgent"></agent-edit>
<div slot="modal-footer" class="w-100"></div>
</b-modal>
Refs are relative to the component they are created in (not the child components)
// use this
this.$refs.editAgent
// Not this
this.$refs.editModal.$refs.editAgent
Note that b-modal is lazy by default, meaning the content is not rendered (instantiated) in the document until the modal is shown.
Once the modal is finished opening, you should have access to the refs (they don't exist until they are rendered into the DOM)
Listen for the modal's shown event, and then access the refs once that event is emitted.
I guess, that there is no <agent-edit> inside <b-modal>, when you try to call the method.
When the modal is hidden, there is no need to render the child components. Try to first show the modal and then access its children (maybe even with a Vue.$nextTick to make sure everything is finished).
In your case, this.$refs.editModal.$refs.editAgent should work.
But pay attemption to the use of $refs and think about emitting events.
I have a component that represents an option in a form, with data representing the currently selected option. There is a parent component which represents the full form, with a submit button and a reset button. I keep track of what options are currently selected in the form by emitting events from the child to the parent (this is important because the form updates dynamically)
.
I'm trying to design the reset button, which clears all fields in the form (sets the currently selected option to an empty string). I would need to modify the data of the child component. Should I do this using a Vue instance as a bus? That seems overkill. Is there a better way to design these components?
I think you want to use sync on the properties your passing into the child component. I use it to load my child component like:
<textbox :content.sync="new_comment" placeholder="Add a comment..."></textbox>
If you already emitting from your child component then changes to new_comment will automatically be passed through.
You can find a lot of ways to do this here.
For me, after a lot of playing around with props, i found that the best and safest way is to use this.$refs.
Even if you have more than one child component with the same ref name, you can go through each child with a forEach.
You can create a custom event to listen to the reset button on each form field. Check out the documentation for this here
Just put a method in the child, perhaps Clear, and call it from the parent. You use $refs in the parent to get to the children.