Wiley-World.of.Warcraft.Programming.A.Guide.and.Reference.for.Creating.WoW.Addons

Chapter 27 ■ API Reference 819Arguments:index—Index of an entry in the trainer service listing (between 1 andGetNumTrainerServices()) (number)Returns:reqLevel—Level required to purchase the service, or nil if the service has nolevel requirement (number)GetTrainerServiceNumAbilityReqReturns the number of ability requirements for purchasing a trainer service.numRequirements = GetTrainerServiceNumAbilityReq(index)Ability requirements are often used for ranked class spells purchased from thetrainer: e.g. learning Blood Strike (Rank 3) requires having learned Blood Strike(Rank 2). See GetTrainerServiceAbilityReq() for information aboutspecific ability requirements.Arguments:index—Index of an entry in the trainer service listing (between 1 andGetNumTrainerServices()) (number)Returns:numRequirements—Number of different ability requirements for the trainerservice (number)Example:-- prints a list of trainer services with their ability requirementsfor index = 1, GetNumTrainerServices() dolocal name, rank, serviceType = GetTrainerServiceInfo(index)if serviceType ~= “header“ thenlocal numRequirements = GetTrainerServiceNumAbilityReq(index)if numRequirements > 0 thenprint(“Ability requirements for “ .. name .. i“ (“ .. rank .. “):“)for i=1,numRequirements dolocal ability, hasReq = iGetTrainerServiceAbilityReq(index, i)if hasReq thenprint(“ + “ .. ability)elseprint(“ - “ .. ability)endendendendendGetTrainerServiceSkillLineReturns the name of the skill line associated with a trainer service.skillLine = GetTrainerServiceSkillLine(index)