tokenURI

Contract: JBProjects​‌

Interface: IERC721Metadata​‌

Step by step

Returns the URI where the ERC-721 standard JSON of a project is hosted.

Definition

function tokenURI(uint256 _projectId) public view override returns (string memory) { ... }

• Arguments:
  • _projectId is the ID of the project to get a URI of.
• The view function can be accessed externally by anyone.
• The view function does not alter state on the blockchain.
• The function overrides a function definition from the IERC721Metadata interface.
• The function returns the token URI to use for the provided _projectId.

Body

1. Return an empty string if there is no URI resolver set.

   // If there's no resolver, there's no URI.
   if (tokenUriResolver == IJBTokenUriResolver(address(0))) return '';

   Internal references:

   • tokenUriResolver

2. Resolve the URI for the project.

   // Return the resolved URI.
   return tokenUriResolver.getUri(_projectId);

   External references:

   • getUri

Code

/**
  @notice
  Returns the URI where the ERC-721 standard JSON of a project is hosted.

  @param _projectId The ID of the project to get a URI of.

  @return The token URI to use for the provided `_projectId`.
*/
function tokenURI(uint256 _projectId) public view override returns (string memory) {
  // If there's no resolver, there's no URI.
  if (tokenUriResolver == IJBTokenUriResolver(address(0))) return '';

  // Return the resolved URI.
  return tokenUriResolver.getUri(_projectId);
}

Bug bounty

Category	Description	Reward
Optimization	Help make this operation more efficient.	0.5ETH
Low severity	Identify a vulnerability in this operation that could lead to an inconvenience for a user of the protocol or for a protocol developer.	1ETH
High severity	Identify a vulnerability in this operation that could lead to data corruption or loss of funds.	5+ETH