Verify whether the JSON array is devoid of any elements within the Vuex store

Question

Verify whether the JSON array is devoid of any elements within the Vuex store

If my array of objects contains data, I want to display a button. In my Vuex store, I have defined an array like this:

state: {
    document: []
},

I am adding data to this array from other components and I have confirmed that the data is being added correctly with no issues.

So the goal is to only show the button if there is data present:

<div class="row margin-above">
    <div class="panel panel-primary" v-for="section in this.$store.getters.getDocument">
        <div class="panel-body quote" >
            <p>{{section.key}}</p>
        </div>
    </div>
    <div v-if="this.$store.getters.getDocument != '[]'">
        <button class="btn btn-success btn-block">Create Document</button>
    </div>
</div>

The issue I'm facing is that the button always appears even when the condition should hide it. Any suggestions?

javascript json vue.js vuejs2 vuex

Answer 1

Answer №1

Make sure to check the length property of the element.

<div v-if="this.$store.getters.getDocument.length != 0">
    <button class="btn btn-success btn-block">Click Here to Create Document</button>
</div>

Alternatively, you can set the vuex variable to null if there are no elements. This approach should also work.

<div v-if="this.$store.getters.getDocument">
    <button class="btn btn-success btn-block">Click Here to Create Document</button>
</div>

Answer 2

Make sure to check the length property of the element.

<div v-if="this.$store.getters.getDocument.length != 0">
    <button class="btn btn-success btn-block">Click Here to Create Document</button>
</div>

Alternatively, you can set the vuex variable to null if there are no elements. This approach should also work.

<div v-if="this.$store.getters.getDocument">
    <button class="btn btn-success btn-block">Click Here to Create Document</button>
</div>

Answer 3

Answer №2

Have you implemented the "getDocument" getter in your store? If so, consider adding a computed property to your component instead of directly referencing the store getters in the template. This approach is cleaner and more reusable:

computed: {
   document: function() { 
       return this.$store.getters.getDocument; 
   }
}

In the template:

<div v-if="document.length">
    <button class="btn btn-success btn-block">Create Document</button>
</div>

Answer 4

Have you implemented the "getDocument" getter in your store? If so, consider adding a computed property to your component instead of directly referencing the store getters in the template. This approach is cleaner and more reusable:

computed: {
   document: function() { 
       return this.$store.getters.getDocument; 
   }
}

In the template:

<div v-if="document.length">
    <button class="btn btn-success btn-block">Create Document</button>
</div>

Verify whether the JSON array is devoid of any elements within the Vuex store

Answer №1

Answer №2

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