ChildBounties¶

Calls¶

accept_curator¶

Accept the curator role for the child-bounty.

The dispatch origin for this call must be the curator of this child-bounty.

A deposit will be reserved from the curator and refund upon successful payout or cancellation.

Fee for curator is deducted from curator fee of parent bounty.

Parent bounty must be in active state, for this child-bounty call to work.

Child-bounty must be in "CuratorProposed" state, for processing the call. And state of child-bounty is moved to "Active" on successful call completion.

parent_bounty_id: Index of parent bounty.
child_bounty_id: Index of child bounty.

Attributes¶

Name	Type
parent_bounty_id	`BountyIndex`
child_bounty_id	`BountyIndex`

Python¶

call = substrate.compose_call(
    'ChildBounties', 'accept_curator', {
    'child_bounty_id': 'u32',
    'parent_bounty_id': 'u32',
}
)

add_child_bounty¶

Add a new child-bounty.

The dispatch origin for this call must be the curator of parent bounty and the parent bounty must be in "active" state.

Child-bounty gets added successfully & fund gets transferred from parent bounty to child-bounty account, if parent bounty has enough funds, else the call fails.

Upper bound to maximum number of active child bounties that can be added are managed via runtime trait config [Config::MaxActiveChildBountyCount].

If the call is success, the status of child-bounty is updated to "Added".

parent_bounty_id: Index of parent bounty for which child-bounty is being added.
value: Value for executing the proposal.
description: Text description for the child-bounty.

Attributes¶

Name	Type
parent_bounty_id	`BountyIndex`
value	`BalanceOf<T>`
description	`Vec<u8>`

Python¶

call = substrate.compose_call(
    'ChildBounties', 'add_child_bounty', {
    'description': 'Bytes',
    'parent_bounty_id': 'u32',
    'value': 'u128',
}
)

award_child_bounty¶

Award child-bounty to a beneficiary.

The beneficiary will be able to claim the funds after a delay.

The dispatch origin for this call must be the parent curator or curator of this child-bounty.

Parent bounty must be in active state, for this child-bounty call to work.

Child-bounty must be in active state, for processing the call. And state of child-bounty is moved to "PendingPayout" on successful call completion.

parent_bounty_id: Index of parent bounty.
child_bounty_id: Index of child bounty.
beneficiary: Beneficiary account.

Attributes¶

Name	Type
parent_bounty_id	`BountyIndex`
child_bounty_id	`BountyIndex`
beneficiary	`AccountIdLookupOf<T>`

Python¶

call = substrate.compose_call(
    'ChildBounties', 'award_child_bounty', {
    'beneficiary': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'child_bounty_id': 'u32',
    'parent_bounty_id': 'u32',
}
)

claim_child_bounty¶

Claim the payout from an awarded child-bounty after payout delay.

The dispatch origin for this call may be any signed origin.

Call works independent of parent bounty state, No need for parent bounty to be in active state.

The Beneficiary is paid out with agreed bounty value. Curator fee is paid & curator deposit is unreserved.

Child-bounty must be in "PendingPayout" state, for processing the call. And instance of child-bounty is removed from the state on successful call completion.

parent_bounty_id: Index of parent bounty.
child_bounty_id: Index of child bounty.

Attributes¶

Name	Type
parent_bounty_id	`BountyIndex`
child_bounty_id	`BountyIndex`

Python¶

call = substrate.compose_call(
    'ChildBounties', 'claim_child_bounty', {
    'child_bounty_id': 'u32',
    'parent_bounty_id': 'u32',
}
)

close_child_bounty¶

Cancel a proposed or active child-bounty. Child-bounty account funds are transferred to parent bounty account. The child-bounty curator deposit may be unreserved if possible.

The dispatch origin for this call must be either parent curator or T::RejectOrigin.

If the state of child-bounty is Active, curator deposit is unreserved.

If the state of child-bounty is PendingPayout, call fails & returns PendingPayout error.

For the origin other than T::RejectOrigin, parent bounty must be in active state, for this child-bounty call to work. For origin T::RejectOrigin execution is forced.

Instance of child-bounty is removed from the state on successful call completion.

parent_bounty_id: Index of parent bounty.
child_bounty_id: Index of child bounty.

Attributes¶

Name	Type
parent_bounty_id	`BountyIndex`
child_bounty_id	`BountyIndex`

Python¶

call = substrate.compose_call(
    'ChildBounties', 'close_child_bounty', {
    'child_bounty_id': 'u32',
    'parent_bounty_id': 'u32',
}
)

propose_curator¶

Propose curator for funded child-bounty.

The dispatch origin for this call must be curator of parent bounty.

Parent bounty must be in active state, for this child-bounty call to work.

Child-bounty must be in "Added" state, for processing the call. And state of child-bounty is moved to "CuratorProposed" on successful call completion.

parent_bounty_id: Index of parent bounty.
child_bounty_id: Index of child bounty.
curator: Address of child-bounty curator.
fee: payment fee to child-bounty curator for execution.

Attributes¶

Name	Type
parent_bounty_id	`BountyIndex`
child_bounty_id	`BountyIndex`
curator	`AccountIdLookupOf<T>`
fee	`BalanceOf<T>`

Python¶

call = substrate.compose_call(
    'ChildBounties', 'propose_curator', {
    'child_bounty_id': 'u32',
    'curator': {
        'Address20': '[u8; 20]',
        'Address32': '[u8; 32]',
        'Id': 'AccountId',
        'Index': (),
        'Raw': 'Bytes',
    },
    'fee': 'u128',
    'parent_bounty_id': 'u32',
}
)

unassign_curator¶

Unassign curator from a child-bounty.

The dispatch origin for this call can be either RejectOrigin, or the curator of the parent bounty, or any signed origin.

For the origin other than T::RejectOrigin and the child-bounty curator, parent bounty must be in active state, for this call to work. We allow child-bounty curator and T::RejectOrigin to execute this call irrespective of the parent bounty state.

If this function is called by the RejectOrigin or the parent bounty curator, we assume that the child-bounty curator is malicious or inactive. As a result, child-bounty curator deposit is slashed.

If the origin is the child-bounty curator, we take this as a sign that they are unable to do their job, and are willingly giving up. We could slash the deposit, but for now we allow them to unreserve their deposit and exit without issue. (We may want to change this if it is abused.)

Finally, the origin can be anyone iff the child-bounty curator is "inactive". Expiry update due of parent bounty is used to estimate inactive state of child-bounty curator.

This allows anyone in the community to call out that a child-bounty curator is not doing their due diligence, and we should pick a new one. In this case the child-bounty curator deposit is slashed.

State of child-bounty is moved to Added state on successful call completion.

parent_bounty_id: Index of parent bounty.
child_bounty_id: Index of child bounty.

Attributes¶

Name	Type
parent_bounty_id	`BountyIndex`
child_bounty_id	`BountyIndex`

Python¶

call = substrate.compose_call(
    'ChildBounties', 'unassign_curator', {
    'child_bounty_id': 'u32',
    'parent_bounty_id': 'u32',
}
)

Events¶

Added¶

A child-bounty is added.

Attributes¶

Name	Type	Composition
index	`BountyIndex`	`u32`
child_index	`BountyIndex`	`u32`

Awarded¶

A child-bounty is awarded to a beneficiary.

Attributes¶

Name	Type	Composition
index	`BountyIndex`	`u32`
child_index	`BountyIndex`	`u32`
beneficiary	`T::AccountId`	`AccountId`

Canceled¶

A child-bounty is cancelled.

Attributes¶

Name	Type	Composition
index	`BountyIndex`	`u32`
child_index	`BountyIndex`	`u32`

Claimed¶

A child-bounty is claimed by beneficiary.

Attributes¶

Name	Type	Composition
index	`BountyIndex`	`u32`
child_index	`BountyIndex`	`u32`
payout	`BalanceOf<T>`	`u128`
beneficiary	`T::AccountId`	`AccountId`

Storage functions¶

ChildBounties¶

Child bounties that have been added.

Python¶

result = substrate.query(
    'ChildBounties', 'ChildBounties', ['u32', 'u32']
)

Return value¶

{
    'curator_deposit': 'u128',
    'fee': 'u128',
    'parent_bounty': 'u32',
    'status': {
        'Active': {'curator': 'AccountId'},
        'Added': None,
        'CuratorProposed': {'curator': 'AccountId'},
        'PendingPayout': {
            'beneficiary': 'AccountId',
            'curator': 'AccountId',
            'unlock_at': 'u32',
        },
    },
    'value': 'u128',
}

ChildBountyCount¶

Number of total child bounties.

Python¶

result = substrate.query(
    'ChildBounties', 'ChildBountyCount', []
)

Return value¶

'u32'

ChildBountyDescriptions¶

The description of each child-bounty.

Python¶

result = substrate.query(
    'ChildBounties', 'ChildBountyDescriptions', ['u32']
)

Return value¶

'Bytes'

ChildrenCuratorFees¶

The cumulative child-bounty curator fee for each parent bounty.

Python¶

result = substrate.query(
    'ChildBounties', 'ChildrenCuratorFees', ['u32']
)

Return value¶

'u128'

ParentChildBounties¶

Number of child bounties per parent bounty. Map of parent bounty index to number of child bounties.

Python¶

result = substrate.query(
    'ChildBounties', 'ParentChildBounties', ['u32']
)

Return value¶

'u32'

Constants¶

ChildBountyValueMinimum¶

Minimum value for a child-bounty.

Value¶

1000000000000

Python¶

constant = substrate.get_constant('ChildBounties', 'ChildBountyValueMinimum')

MaxActiveChildBountyCount¶

Maximum number of child bounties that can be added to a parent bounty.

Value¶

Python¶

constant = substrate.get_constant('ChildBounties', 'MaxActiveChildBountyCount')

Errors¶

InsufficientBountyBalance¶

The bounty balance is not enough to add new child-bounty.

ParentBountyNotActive¶

The parent bounty is not in active state.

TooManyChildBounties¶

Number of child bounties exceeds limit MaxActiveChildBountyCount.