I have been wanting to make a few tools that require pre-processing the custom_json fields. however the script gets exceptions from time to time due to the inconsistent format of the custom_json.
For example, sometimes, I see this format:
1 | {'required_auths': [], 'id': 'follow', 'required_posting_auths': ['steemit'], 'json': '["follow", {"follower":"steemit","following":"steem","what":["posts"]}]'} |
And sometimes this:
1 | {'required_auths': [], 'id': 'follow', 'required_posting_auths': ['steemit'], 'json': '{"follower":"steemit","following":"steem","what":["posts"]}'} |
I assume that it is up to the front-end to interpret if the format is correct. At this point, the steem blockchain is just a public immutable database, and it has no idea what the JSON data means.
And also, this is worse:
1 | {'required_auths': [], 'required_posting_auths': ['jpphoto'], 'id': 'follow', 'json': '"[\\"reblog\\",{\\"account\\":\\"jpphoto\\",\\"author\\":\\"photovisions\\",\\"permlink\\":\\"travel-norway-27-autumn-in-sylan-mountains-snow-and-reindeers\\"}]"'} |
First JSON decode gives a valid JSON string which needs to be decoded. It might be obvious for human to understand the data, but for computer programs, you would need to handle all these cases, at least, you would need to realise the incorrect format, discard it, and move on - instead of throwing exception and halt.
Life is hard.
Every little helps! I hope this helps!
Steem On!~
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