Steem.Js for dummies #6: Broadcasting several operations

In this example, we will try the broadcast.send function to perform two simultaneous operations : post a comment (actually it's a post, not a comment, but it is regarded as the same), and comment_options to set beneficiaries.

I will take a top-down approach this time and will give you the relevant code from my beneficiaries code on @steem-plus:

var operations = [
        ['comment',
            {
                parent_author: '',
                parent_permlink: tags[0],
                author: author,
                permlink: permlink,
                title: title,
                body: body,
                json_metadata : JSON.stringify({
                tags: tags,
                app: 'steemplus'
                })
            }
        ],
        ['comment_options', {
            author: author,
            permlink: permlink,
            max_accepted_payout: '100000.000 SBD',
            percent_steem_dollars: sbdpercent,
            allow_votes: true,
            allow_curation_rewards: true,
            extensions: [
                [0, {
                    beneficiaries: beneficiaries
                }]
            ]
        }]
    ];
    steem.broadcast.send(
        { operations: operations, extensions: [] },
        { posting: wif },
        function(e, r) {
       //TODO : Do something here
});

Now, let's break it into pieces. Ready?
As you can see in the code, we will broadcast two operations:

Comment

In the first object of our array of operations, you will need to fill the following parameters:

'comment',
            {
                parent_author: '',
                parent_permlink: tags[0],
                author: author,
                permlink: permlink,
                title: title,
                body: body,
                json_metadata : JSON.stringify({
                tags: tags,
                app: 'steemplus'
                })
            }

• parent_author : Who authored the post or comment you are replying to? Here we are not posting a comment but a blog, this field is thus null
• parent_permlink : Permlink of the parent if you are sending a comment, for an original blog, it corresponds to the first tag.
• author : really, you're going to make me write this? Put the name of the author there =p
• permlink : create the permlink from the title and put it in here, be careful, no space allowed.
• title and body : well...
• json_metadata is an object containing additional information on the operation. Here, I ve only put the tags and the name of the app broadcasting.

You could broadcast this comment already, but let's make it better and associate it with the second operation:

CommentOptions

Here is what it looks like:

comment_options', {
            author: author,
            permlink: permlink,
            max_accepted_payout: '100000.000 SBD',
            percent_steem_dollars: sbdpercent,
            allow_votes: true,
            allow_curation_rewards: true,
            extensions: [
                [0, {
                    beneficiaries: beneficiaries
                }]
            ]
        }

In this part of the we have to redundant variables : author and permlink, so just input the same in here.
As for the rest:

• max_accepted_payout is self-explanatory, put something big unless you want to decline part of the rewards
• percent_steem : 10000 (100.00%) means 50/50 SBD/SP post, 0 means 100% SP post.
• allow_votes: people can vote on your post, wouldn't really make sense to put false, right?
• allow_curation_rewards: allow voters to get curation rewards
• beneficiaries are under extensions. To create the object, follow my lead:

beneficiaries.push({
        account: 'steem-plus',
        weight: 100*STEEM_PLUS_FEED
    });

If STEEM_PLUS_FEED=5;, we will have a weight of 500 (5.00%). If that is the only beneficiary, by default, the author account will get the remaining 95% of the rewards. It has to be noted that all beneficiaries rewards are fully paid in SP regardless of percent_steem.

Finally send the broadcast

Now that everything is ready, you just need to send the broadcast:

 steem.broadcast.send(
        { operations: operations, extensions: [] },
        { posting: wif },
        function(e, r) {
       //TODO : Do something here
});

The only thing you need to do here is adding the PRIVATE posting WIF. Now, it should work ;)

Hope this helps!

@stoodkev

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Posted on Utopian.io - Rewarding Open Source Contributors

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