Eos: How can I call another contract in a contract?

[yekai1003]

I get this error

yekaideMacBook-Pro:pdjtask yk$ cleos set contract yekai ../pdjtask/
Reading WAST/WASM from ../pdjtask/pdjtask.wasm...
Using already assembled WASM...
Publishing contract...
1303654ms thread-0   main.cpp:2350                 main                 ] Failed with error: Assert Exception (10)
!"unresolvable": env._ZN8pdjtoken6createEyN5eosio5assetEhhh

pdjtask.hpp

#pragma once

#include <eosiolib/asset.hpp>
#include <eosiolib/eosio.hpp>
#include "pdjtoken.hpp"

#include <string>



using namespace eosio ;

using std::string;

uint64_t tk_id = 1001;

class pdjtask : public contract {
    public:
        pdjtask( account_name self ):  contract(self),ptoken(self){

        }
        /// @abi action
        //创建任务
        void createtatask( account_name creator, account_name worker, asset taskBonus, string memo );
        //提交任务
        void commit( uint64_t taskID, string memo );
        //验收任务
        void confirm( uint64_t taskID );

        private:
        /// @abi table tasks i64

        struct task {
            uint64_t taskID;
            account_name creator;
            account_name worker;
            asset    bonus;
            uint8_t  status = 0;
            string  remark;
            string  comment;
            uint64_t primary_key()const { return taskID; }
        };

        typedef eosio::multi_index<N(tasks), task> tasks;
    private:
        pdjtoken ptoken;
    private: 
        uint64_t getKeyID() {
            return tk_id++;
        }

};

pdjtask.cpp

#include "pdjtask.hpp"


void pdjtask::createtatask( account_name creator, account_name worker, asset taskBonus, string memo )
{
    //创建任务-指定作者-奖金数量-描述
    //检查creator 和 worker是否都存在
    require_auth(creator);
    require_auth(worker);

    auto sym = taskBonus.symbol;
    eosio_assert( sym.is_valid(), "invalid symbol name" );

    uint64_t id = getKeyID();

    tasks tk( _self, _self );
    asset airToken = taskBonus;
    airToken.amount = 100000000;
    ptoken.create( _self, airToken, 1, 1, 1 );
    tk.emplace(creator,[&](auto &t){
        t.creator = creator;
        t.worker  = worker;
        t.taskID  = id;
        t.bonus   = taskBonus;
        t.remark  = memo;
    });

}

void pdjtask::commit( uint64_t taskID, string memo )
{

}


EOSIO_ABI( pdjtask, (createtatask)(commit) )

pdjtoken is another contract

[chenlian2015]

void ocaskans::send_deferred_transferfrom_transaction(oct::transferfromact tf){
eosio::print("transferfromact:", tf.from, tf.to, tf.quantity);
eosio::asset fromBalance = oct::currency(tokenContract).get_balance(tf.from, tf.quantity.symbol.value);
eosio_assert(fromBalance.amount >= tf.quantity.amount,NOT_ENOUGH_OCT_TO_DO_IT);

uint64_t allowed = oct::currency(tokenContract).allowanceOf(tf.from, tf.to, tf.quantity.symbol.value);
eosio_assert(allowed>= tf.quantity.amount, NOT_ENOUGH_ALLOWED_OCT_TO_DO_IT);

using namespace eosio;
auto trx = eosio::transaction();

test_action_action<tokenContract, N(transferfrom)> transferfromcurrency;
copy_data((char*)&tf, sizeof(tf), transferfromcurrency.data);
trx.actions.emplace_back(vector<permission_level>{{currentAdmin, N(active)}},transferfromcurrency);
trx.delay_sec = 2;
trx.send( 0xffffffffffffffff, currentAdmin);

}

[chenlian2015]

@yekai1003

[wangyilin1987]

@chenlian2015 thank you

[dksuper]

@chenlian2015 Do you have more specific , exmaple about contract inheritance? , I just learning now , thank you!

[wangyilin1987]

eg:
ticdist.token.cpp

action(
permission_level{_self, N(active)},
eosio.token, N(transfer),
std::make_tuple(_self, unlocker, lockinf.quantity, memo)
).send();

this realized ticdist.token call eosio.token->transfer

permission_level{_self, N(active)} is check ticdist.token have authority eosio.code,like:
cleos set account permission ticdist.toke active '{"threshold": 1,"keys": [],"accounts": [{"permission":{"actor":"ticdist.toke","permission":"eosio.code"},"weight":1}]}' owner -p ticdist.toke@owner

std::make_tuple(_self, unlocker, lockinf.quantity, memo) is transfer interface parameters.

2018-08-21

wang_yi_lin

发件人： dksuper
发送时间： 2018-08-20 14:20:05
收件人： EOSIO/eos
抄送： wangyilin; Comment
主题： Re: [EOSIO/eos] How can I call another contract in a contract?(#3109)

@chenlian2015 Do you have more specific , exmaple about contract inheritance? , I just learning now , thank you!
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[dksuper]

@wangyilin1987
Thanks a lot!