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title RB: Submit Post
position 10
description This example will broadcast a new post to the blockchain using the values provided. To create a post in `ruby`, we will use a `Radiator::Transaction` containing a `comment` operation, which is how all content is stored internally.
layout full

Full, runnable src of Submit Post can be downloaded as part of the RB tutorials repository.

A post is differentiated from a comment by whether or not a parent_author exists. When there is no parent_author, then it's a post, otherwise it's a comment.

Script

You should change wif to the posting key that matches your author. This script will pass along the values as a comment operation:

  • author - Account name of the author currently posting.
  • permlink - Value unique to the author
  • parent_author - An empty string, in the case of a root post like this example.
  • parent_permlink - The first tag, in the case of a root post like this example.
  • title - Human readable title.
  • body - The actual content of the post.
  • json_metadata - JSON containing all of the tags.

To Run

First, set up your workstation using the steps provided in Getting Started. Then you can create and execute the script (or clone from this repository):

git clone git@github.com:dpays/developer-docs-tutorials-rb.git
cd devportal-tutorials-rb/tutorials/10_submit_post
bundle install
ruby submit_a_new_post.rb

Example Output

{
  "jsonrpc": "2.0",
  "result": {
    "id": "768f7f64cee94413da0017ef79f592bb4da86baf",
    "block_num": 22867626,
    "trx_num": 43,
    "expired": false
  },
  "id": 1
}

The response we get after broadcasting the transaction gives us the transaction id (768f7f6...), block number (22867626), and the transaction number of that block (43).

Error Handling

We're checking the result for error in case the remote node has an issue to raise. Normally, it will be nil, but if it's populated, output error.message and exit.