Multiple submissions of posts

[filips123]

Description

When creating a post, the request for creation can be sent multiple times. This can cause more equal posts.

Expected Behavior

It should add only one post at once.

Current Behavior

The request for creation can be sent multiple times.

Possible Solution

JavaScript should prevent double submission of the form.

Steps to Reproduce

1. Open BlogChain
2. Create and open new blog
3. Add new post

Note: The problem sometimes doesn't occur.

Screenshots

Multiple transactions in MetaMask:

Multiple posts in BlogChain:

Your Environment

• BlogChain Version: 1.0 beta
• Node.js Version: 8.9.4
• NPM Version: 5.6.0
• Browser Name and Version: Firefox 59 and Chrome 65
• Operating System and Version: Windows 10
• Hosting Type: Local and IPFS