Add dynamically data-bound text in Vue.js - vue.js

Question

My case must be weird, but I have a good for it.
Here's my situation:
I have a Vue app that renders a form based on a json.
For example, the JSON:
{
"fields": [{
"name": "firstName",
"title": "Name"
}, {
"name": "lastName",
"title": "Last Name"
}, {
"title": "Hello {{ firstName }}!"
}]
}
From that json, the final render has to be:
<input type="text" name="firstName" v-model="firstName" />
<input type="text" name="lastName" v-model="lastName" />
<p>Hello {{ firstName }}</p>
I'm able to render all of that, except for the <p> which is rendered as raw {{ firstName }} and not data-bound/reactive.
My question is:
How do I insert dynamic templates (can come from a Rest API) into the component, and make them have the full power of the mustache expressions.
The component will have something like
{...firstName field...}
<dynamic template will be added here and update whenever firstName changes>
Please let me know if I'm not too clear on this issue
Thank you!!!

Answer 1

Is this the sort of thing you're trying to do? I've created a dynamic component whose template is generated from a JSON string which is editable.
new Vue({
el: '#app',
data: {
componentData: {
firstName: 'Jason',
lastName: 'Bourne',
},
jsonString: `
{
"fields": [{
"name": "firstName",
"title": "Name"
}, {
"name": "lastName",
"title": "Last Name"
}, {
"title": "Hello {{ firstName }}!"
}]
}`
},
computed: {
template() {
const json = JSON.parse(this.jsonString);
return json.fields.map((s) => {
if ('name' in s) {
return `<input type="text" name="${s.name}" v-model="${s.name}">`;
}
return s.title;
}).join('\n');
},
componentSpec() {
return {
template: `<div>${this.template}</div>`,
data: () => this.componentData
};
}
}
});
<script src="https://unpkg.com/vue#latest/dist/vue.js"></script>
<div id="app">
<textarea rows="16" cols="40" v-model.lazy="jsonString">
</textarea>
<component :is="componentSpec"></component>
</div>