Plots2: Not able to unsubscribe after clicking following button of a tag.

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The problem

A user is not able to click the following button again to unfollow the specific tag but is just redirected to that tag page.

What's supposed to happen:
If user is already following the topic this clicking this button again should unsubscribe the user from that topic.

What actually does happen:
User is just redirected to the specific topic page.

Solution

Where to find the relevant lines of code:
https://github.com/publiclab/plots2/blob/master/app/views/home/subscriptions.html.erb#L9
https://github.com/publiclab/plots2/blob/master/app/views/tag/show.html.erb#L47

What to change them to:

We need to add data-method="delete" to the above mentioned two lines.

<a rel="tooltip" title="<%= t('home.subscriptions.click_unfollow') %>" class="btn btn-default active" href="/unsubscribe/tag/everything"><i class="fa fa-eye"></i> <%= t('home.subscriptions.following') %> <b><%= t('home.subscriptions.research_notes') %></b></a>
to
<a rel="tooltip" title="<%= t('home.subscriptions.click_unfollow') %>" class="btn btn-default active" href="/unsubscribe/tag/everything" data-method="delete"><i class="fa fa-eye"></i> <%= t('home.subscriptions.following') %> <b><%= t('home.subscriptions.research_notes') %></b></a>

and

<a rel="tooltip" title="<%= t('home.subscriptions.click_unfollow') %>" class="btn btn-default active" href="/unsubscribe/tag/everything"><i class="fa fa-eye"></i> <%= t('home.subscriptions.following') %> <b><%= t('home.subscriptions.research_notes') %></b></a>
to
<a rel="tooltip" title="<%= t('home.subscriptions.click_unfollow') %>" class="btn btn-default active" href="/unsubscribe/tag/everything" data-method="delete"><i class="fa fa-eye"></i> <%= t('home.subscriptions.following') %> <b><%= t('home.subscriptions.research_notes') %></b></a>

Steps to Fix

• [ ] claim this issue with a comment here, below, and ask any clarifying questions you need
• [ ] set up a repository locally following the README instructions, and make sure that all tests pass
• [ ] try to fix the issue following the steps above, but even before you're done, you can:
• [ ] commit your changes and start a pull request (see contributing to Public Lab software) but mark it as "in progress" if you have questions or if you haven't finished
• [ ] alert someone via the developers list (see below) to have your pull request merged. This may take a few extra steps depending on when you do it, but we'll help you out!

Please email the developers list (see https://publiclab.org/wiki/developers) or go to the chatroom if you have questions, and take a look at our first-timers landing page for more information!