Questions tagged [action]

Actions specify and implement the behaviour for smart contracts and operate primarily in a message-based communication model. Questions may relate to sending, receiving, analysing, interpreting, and implementing actions; action specification and rules, and others.

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4 votes
2 answers
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Account of caller of action

Is there a way to get the account of the caller within an action? If not, I would need to add an extra parameter to the action containing the action name and then do some verification. It would be ...
friedger's user avatar
  • 833
11 votes
2 answers
3k views

How to do something when your contract is an action notification recipient (like when it receives funds)?

The EOSIO_ABI macro seems to only forward actions meant for our contract. How do you also listen to all other contract actions (like the very common transfer action for the account "eosio.token")? I ...
PunchPlump's user avatar
6 votes
4 answers
2k views

List of available datatypes for action parameter

I am wondering where I can find a list of supported datatypes that can be used in an actions parameters. Edit: Should have specified this better. I am writing some actions such as: /// @abi action ...
eclipse's user avatar
  • 213
11 votes
1 answer
975 views

What are naming rules for actions, tables and contracts?

Since strings internally are converted to uint64 for space efficiency on the eos.io blockchain what are the restrictions that need to be followed for: actions tables index identifiers (within ...
Dallas Johnson's user avatar
3 votes
1 answer
446 views

How to push a vector to an action

I'm troubled with a problem about how I can use command line cleos push action to push a vector to an already existing action, such as: void vectortest(const std::vector &vec) ; Anyone who can ...
fen chen's user avatar
  • 163
3 votes
1 answer
3k views

Reading table rows with EOSJS

Is there a way to receive the return output of an action with EOSJS? Say for example I have an action that reads columns from a table, sums a row and returns the result. How would I structure the ...
Mitch Pierias's user avatar
2 votes
1 answer
99 views

Is it possible to create new contract from another?

Ethereum has a opportunity to create new contract from another. Does eosio has the same? I found a code with new account creation, but I didn't find nothing about setting code and abi from contract.
harriton's user avatar
0 votes
2 answers
2k views

Transfer EOS tokens inside a smart contract from an account to another

I want to implement, in my smart contract(C++), a function that forwards EOS token to another account. This is actually a basic question, but is that possible actually? Please, could you share the ...
Riccardo Persiani's user avatar
12 votes
1 answer
2k views

What is the purpose of `require_recipient`?

I saw the description of the function require_recipient and it says: Add the specified account to set of accounts to be notified I would like to understand what's the purpose of receive this ...
Leo Ribeiro's user avatar
  • 3,023
7 votes
3 answers
1k views

Why the first time I execute an action I get "Error 3080006: transaction took too long"?

WHAT I WANT Call an action and see it succeed at the first execution. WHAT IS NOT WORKING The function, which I am executing, the first time fails with error: Error 3080006: Transaction took too long ...
Riccardo Persiani's user avatar
5 votes
1 answer
337 views

What's the symbol that makes one action unique?

When I use the command cleos get actions <account_name> -j,I got three actions which have different receivers, but belong to the same transfer. I know that the three actions are for accounts who ...
guaiguaihw's user avatar
4 votes
3 answers
3k views

How to get operations history of account?

Should I analyze all the blocks or are there some methods in the eosjs library?
 Captain's user avatar
3 votes
1 answer
465 views

Transaction took too long

I occurred this Error 3080006: transaction took too long when push my own contract action. the push action cmd had no setting '-X'. It's weird because I pushed the same action with two different ...
luffy's user avatar
  • 31
3 votes
2 answers
2k views

How to send an action from one contract to another?

From contract A, I want to send an action to contract B. How to do that? There is SEND_INLINE_ACTION but that seems to need a pointer to the contract (usually *this), correct? Solution Using action....
friedger's user avatar
  • 833
3 votes
1 answer
731 views

Can actions have return types?

I've been looking at most of the example contracts and every action seems to return void. Does this mean that you can not have a return type for your actions? Instead, would you have to send a ...
Magic Man Xpress's user avatar
2 votes
1 answer
240 views

Deferred action failure handling

Is there some kind of trigger that notifies if a deferred action failed to execute; being the failure either by lack of resources for running the action in the paying account, or a non satisfied ...
Ariel Scarpinelli's user avatar
2 votes
2 answers
696 views

Make a transfer inline

I would like to send SYS token owned by the smart contract account to a third party account when anyone call a specific action. I have tried the following code but I am getting an error: [[eosio::...
poiuytrez's user avatar
  • 165
2 votes
1 answer
102 views

How do you stream data from an input file when writing contracts on EOS?

I emulated the tic.tac.toe tutorial code and made a simple contract that allows me to add and remove car information. However, I can only push action one at a time and this only allows me to add/...
Tim Zhang's user avatar
  • 103
1 vote
1 answer
454 views

Transfer tokens inside a smart contract from an account to another account

I need to write a simple function that would send tokens using a different account action. Exactly the same situation as in these questions: one and two But I have to use not eosio.token contract but ...
Dim's user avatar
  • 21
1 vote
2 answers
170 views

Passing a string to an action?

I have an action that needs to operate on a string: void token::MyAction(std::string key); so I would expect I can make the call like this: cleos push action MyAccount MyAction '["burn"]' -p ...
ekkis's user avatar
  • 515