I'm new to Vue JS and I want to learn it by building a very basic note-app.
So there is a list of all notes (their names) on the left and if you click on a name of a note, a textarea filled with the note text is displayed with the name above:
My problem is to get the clicked note array in the array of notes and display its name and text on the right. I've tried a (very clumsy) approach:
html:
<div class="col-md-3">
<ul style="margin-top: 50px">
<ol v-for="note in notes">
<h3 @click="setActive(note)">{{note.name}}</h3>
</ol>
</ul>
</div>
<div class="col-md-9" v-show="active">
<h1>{{active.name}}</h1>
<textarea class="form-control" rows="10">{{active.text}}</textarea>
</div>
js:
<script>
var vm = new Vue({
el: 'body',
data: {
active: {},
notes: [{
id: 1,
name: 'Note 1',
text: 'Text of note 1'
}, {
id: 2,
name: 'Note 2',
text: 'Text of note 2'
}, {
id: 3,
name: 'Note 3',
text: 'Text of note 3'
}, {
id: 4,
name: 'Note 4',
text: 'Text of note 4'
}, {
id: 5,
name: 'Note 5',
text: 'Text of note 5'
}]
},
methods: {
setActive: function(note) {
this.active.id = note.id
this.active.name = note.name
this.active.text = note.text
console.log(this.active.id)
}
}
});
</script>
So I pass the clicked object and fill an "active"-data array in order to display it in the textarea. The problem is, the "active"-array is not updaded in the view.
Even If I would find a solution to update the data, I think this is not the right approach in Vue JS and there might be a short/simpler one..
So my question is, is there another approach to achieve this a bit easier?
Just keep track of the active note ID and use a computed property to return the data. This way you don't have two variables that mean to represent the same data, and you can use v-model
to update the note in real-time:
JS
var vm = new Vue({
el: 'body',
data: {
active: 0,
notes: [{
id: 1,
name: 'Note 1',
text: 'Text of note 1'
}, {
id: 2,
name: 'Note 2',
text: 'Text of note 2'
}]
},
methods: {
setActive: function(index) {
this.active = index;
}
},
computed: {
activeNote: function(){
return this.notes[this.active];
}
}
});
HTML:
<div class="col-md-3">
<ul style="margin-top: 50px">
<ol v-for="note in notes">
<h3 @click="setActive($index)">{{note.name}}</h3>
</ol>
</ul>
</div>
<div class="col-md-9">
<h1>{{activeNote.name}}</h1>
<textarea class="form-control" rows="10" v-model="activeNote.text"></textarea>
</div>
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