Скачать или смотреть Queue Emails in Rails Until User Approval

Learn how to queue emails in Ruby on Rails until the user decides to send them, using a straightforward approach.
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This video is based on the question https://stackoverflow.com/q/66500889/ asked by the user 'pzboy' ( https://stackoverflow.com/u/13385611/ ) and on the answer https://stackoverflow.com/a/66501467/ provided by the user 'tadman' ( https://stackoverflow.com/u/87189/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Queue Emails in Rails Until User Approval: A Step-by-Step Guide

Have you ever wanted to queue emails in your Ruby on Rails application, only sending them when the user gives the go-ahead? This is a common scenario that many developers face. The built-in method deliver_later in Rails allows for time-based scheduling of emails, but what if you want to delay sending until user action? In this post, we’ll explore how you can implement this functionality effectively.

Understanding the Problem

When you are working with email functionality in Rails, you might find situations where you want to prepare an email but not send it right away. For example:

Users may want to review the email content before it is sent.

Users may decide to send multiple emails at once based on their preferences.

By default, deliver_later may not suit your needs since it schedules the email for a future time rather than waiting for a user’s confirmation. So how can we achieve that?

The Solution

Step 1: Capture Email Data

Since the goal is to queue the email, the first step is to capture the information needed for the email. You won't send the email immediately; instead, you will store the required data for later use.

Use a custom table to save email data. Create a migration to generate a new database table, say queued_emails, where you can store:

Recipient email address

Subject

Body content

Any additional parameters necessary for sending the email

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Step 2: Save Email Data

When the user fills out a form to create an email, save that data instead of sending it. In your controller action, you can do something like this:

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Step 3: User Initiates Sending

Provide an interface for the user to review their drafted emails. Once they are ready to send, add a button to trigger the sending action.

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In your controller, when the user clicks the send button:

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Conclusion

Using this approach, you can efficiently queue emails in Rails until user approval. By capturing necessary data and providing a user-friendly interface for sending, you empower users to control their email communications effectively.

Feel free to adjust the methodology according to your application’s specific needs or to expand functionality such as error handling or email templates. Happy coding!