dynamic variable to store user input (Meteor)

Question

dynamic variable to store user input (Meteor)

I'm still trying to grasp the concept of reactive programming in Meteor, so I have a question that may seem silly:

Instead of "injecting" data using the template system as documented, can I use it to extract data? For example, if I have a textarea like this:

<textarea id="desc" rows="15" cols="80" >  {{projectDescription}} </textarea>

Is it possible to access the projectDescription field as a reactive data source directly? I tried Template.project.projectDescription at the REPL without success, but I'm new to this.

If my approach is not feasible, what is the recommended method? Where should I retrieve the

document.getElementById('desc').value

Should I use an event map on the template for this purpose? The goal is to validate inputs (server-side) or perform real-time Markdown conversions (like right now as I type). Overall, I am seeking to better understand Meteor.

javascript meteor

Answer 1

Answer №1

Utilizing reactivity is just one option available. Another approach involves setting up an event listener within the template to capture keydown events, enabling you to establish a session variable. Session variables act as reactive data sources, allowing you to leverage the variable along with a template helper to introduce reactivity in a different section of your template.

For instance:

<template name="business>
  <textarea id="details"></textarea>
  <div>{{businessDetails}}</div>
</template>

-

Template.business.events({
  "keydown #details": function (event) {
     var content = $(event.target).val();
     Session.set("businessDetails", content);
  }
});

Template.business.helpers({
  businessDetails: function () {
    var businessDetails = Session.get("businessDetails");
    //perform operations
    return businessDetails;
  }
});

Answer 2

Utilizing reactivity is just one option available. Another approach involves setting up an event listener within the template to capture keydown events, enabling you to establish a session variable. Session variables act as reactive data sources, allowing you to leverage the variable along with a template helper to introduce reactivity in a different section of your template.

For instance:

<template name="business>
  <textarea id="details"></textarea>
  <div>{{businessDetails}}</div>
</template>

-

Template.business.events({
  "keydown #details": function (event) {
     var content = $(event.target).val();
     Session.set("businessDetails", content);
  }
});

Template.business.helpers({
  businessDetails: function () {
    var businessDetails = Session.get("businessDetails");
    //perform operations
    return businessDetails;
  }
});

Answer 3

Answer №2

Meteor doesn't support two-way binding like some other frameworks do. While there are packages available to assist with this, the traditional method involves binding events directly to DOM elements:

Template.xyz.events({
    "keyup #desc": function (evt, template) {
        Session.set("projectDescription", evt.currentTarget.value);
    }
});

Answer 4

Meteor doesn't support two-way binding like some other frameworks do. While there are packages available to assist with this, the traditional method involves binding events directly to DOM elements:

Template.xyz.events({
    "keyup #desc": function (evt, template) {
        Session.set("projectDescription", evt.currentTarget.value);
    }
});

Answer 5

Answer №3

The package called session-bind promises to provide two-way input binding to session variables. It's interesting that there aren't any other similar packages like this one on Atmosphere.

Answer 6

The package called session-bind promises to provide two-way input binding to session variables. It's interesting that there aren't any other similar packages like this one on Atmosphere.

dynamic variable to store user input (Meteor)

Answer №1

Answer №2

Answer №3

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