I get msg.data as JSON. How can I parse it in my contract to create variables in my contract with given values?
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The answers to this two-year-old question might help: ethereum.stackexchange.com/questions/6121/… Also, here is a more recent article on this topic: steemit.com/json/@chrisdotn/a-json-parser-for-solidity– Ajoy BhatiaCommented May 29, 2018 at 19:21
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It would be less expensive to parse the JSON outside the EVM and send the extracted values as parameters to your contract, if that is at all feasible in your design.
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My exact problem is like this: I need a function to take variable number of arguments. Eg. in one call, it is { "name" : "xyz", "age" : 12 } and in other { "company_name" : "pqr", "address" : "some_address" } If I get the data via the msg.data then I need to parse it. Other option is to use
mappingbut seems it is not possible as function argument.– KumarCommented May 30, 2018 at 6:26 -
1Then, check out the JSON parser described in the Steemit article linked in my previous comment ( steemit.com/json/@chrisdotn/a-json-parser-for-solidity ). I have not used it but I read the article and it looks like what you need. Commented May 30, 2018 at 17:29