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Solidity Sample: Separation of Rules & Logic from Data Structure
contract ManagableAuthorization{
//Simplified in a way that all readers can read all data. In real case scenario you will have more complex logic.
mapping(address => bool) readers;
modifier canRead(){
//your logic for example:
require(readers[msg.sender]);
_;
}
//........ the rest of the class code.........
}
contract PeopleRepository is ManagableAuthorization{
struct Person {
bytes32 name;
uint birthDate;
}
mapping(address => Person) people;
function readPerson(address personAddress) public canRead returns(bytes32, uint) {
Person storage person = people[personAddress];
return(person.name, person.birthDate);
}
//........ the rest of the class code.........
}
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