在 Lua 中创建动态数组-解网

问：

我是使用 Lua 编程的新手，所以请原谅我的愚蠢。我正在尝试使用 Lua for QBcore （FiveM）创建一个动态数组，但是当我创建数组时，我总是以索引（？）结尾。

这使得游戏中的菜单不起作用（我认为..）。

我的代码是：

local mdtMenu = nil
RegisterNetEvent('qb-radialmenu:client:onRadialmenuOpen', function()
    if mdtMenu ~= nil then
        exports['qb-radialmenu']:RemoveOption(mdtMenu)
        mdtMenu = nil
    end
    
    local myData = QBCore.Functions.GetPlayerData()
    local myJob = myData.job
    local menuItems = createRadialJobExtrasMenu(myJob.onduty)
    
    if myJob.name == "ems" or myJob.name == "police" then
        mdtMenu = exports['qb-radialmenu']:AddOption({
            menuItems
        }, mdtMenu)
    end
    
    print(QBCore.Debug(mdtMenu))
    --print(mdtMenu)
end)

上面代码中使用的函数：

function createRadialJobExtrasMenu(onduty)
    local extra_menuItems = {}
    local mdtMenu = {
        id = 'job_extras',
        title = 'Job Extras',
        icon = "square-plus",
        items = {
            open_mdt = {
                title = 'Open MDT menu',
                icon = "tablet-screen-button",
                type = 'command',
                event = "mdt",
                shouldClose = true
            },
            my_data = {
                title = 'My Data',
                icon = "person",
                type = 'command',
                event = "myaddons-myinfo",
                shouldClose = true
            },
            mdt_signonoff = {},
        }
    }
    
    if onduty then
        mdt_signonoff = {
            title = 'Sign Off (Duty)',
            icon = "circle-xmark",
            type = 'command',
            event = 'myaddons-toggleduty',
            shouldClose = true
        }
    else
        mdt_signonoff = {
            title = 'Sign On (Duty)',
            icon = "check-to-slot",
            type = 'command',
            event = 'myaddons-toggleduty',
            shouldClose = true
        }
    end
    
    table.insert(mdtMenu.items.mdt_signonoff, mdt_signonoff)
    
    return mdtMenu
end

我期望值班时的菜单（注意第三个条目）：items:

local mdtMenu = nil
RegisterNetEvent('qb-radialmenu:client:onRadialmenuOpen', function()
    if mdtMenu ~= nil then
        exports['qb-radialmenu']:RemoveOption(mdtMenu)
        mdtMenu = nil
    end
    
    local myData = QBCore.Functions.GetPlayerData()
    local myJob = myData.job
    
    if myJob.name == "ems" or myJob.name == "police" then
            mdtMenu = exports['qb-radialmenu']:AddOption({
                id = 'job_extras',
                title = 'Job Extras',
                icon = "square-plus",
                items = {
                    {
                        id = 'open_mdt',
                        title = 'Open MDT menu',
                        icon = "tablet-screen-button",
                        type = 'command',
                        event = "mdt",
                        shouldClose = true
                    },
                    {
                        id = 'my_data',
                        title = 'My Data',
                        icon = "person",
                        type = 'command',
                        event = "myaddons-myinfo",
                        shouldClose = true
                    },
                    {
                        id = 'mdt_signoff',
                        title = 'Sign Off (Duty)',
                        icon = "circle-xmark",
                        type = 'command',
                        event = 'myaddons-toggleduty',
                        shouldClose = true
                    },
                }
            }, mdtMenu)
    end
end)

下班时（注意第三个条目）：items:

local mdtMenu = nil
RegisterNetEvent('qb-radialmenu:client:onRadialmenuOpen', function()
    if mdtMenu ~= nil then
        exports['qb-radialmenu']:RemoveOption(mdtMenu)
        mdtMenu = nil
    end
    
    local myData = QBCore.Functions.GetPlayerData()
    local myJob = myData.job
    
    if myJob.name == "ems" or myJob.name == "police" then
            mdtMenu = exports['qb-radialmenu']:AddOption({
                id = 'job_extras',
                title = 'Job Extras',
                icon = "square-plus",
                items = {
                    {
                        id = 'open_mdt',
                        title = 'Open MDT menu',
                        icon = "tablet-screen-button",
                        type = 'command',
                        event = "mdt",
                        shouldClose = true
                    },
                    {
                        id = 'my_data',
                        title = 'My Data',
                        icon = "person",
                        type = 'command',
                        event = "myaddons-myinfo",
                        shouldClose = true
                    },
                    {
                        id = 'mdt_signon',
                        title = 'Sign On (Duty)',
                        icon = "check-to-slot",
                        type = 'command',
                        event = 'myaddons-toggleduty',
                        shouldClose = true
                    },
                }
            }, mdtMenu)
    end
end)

我希望我的问题能引起任何意义。

编辑：更改了代码，因为我认为@Vlad意味着，但这仍然给我留下了 1 个索引（？）数字。

编辑2：唯一正确的结构如下所示：

local mdtMenu = nil
RegisterNetEvent('qb-radialmenu:client:onRadialmenuOpen', function()
    if mdtMenu ~= nil then
        exports['qb-radialmenu']:RemoveOption(mdtMenu)
        mdtMenu = nil
    end
    
    local myData = QBCore.Functions.GetPlayerData()
    local myJob = myData.job
    
    if myJob.name == "ems" or myJob.name == "police" then
        mdtMenu = exports['qb-radialmenu']:AddOption({
            id = 'job_extras',
            title = 'Job Extras',
            icon = "square-plus",
            items = {
                {
                    id = 'open_mdt',
                    title = 'Open MDT menu',
                    icon = "tablet-screen-button",
                    type = 'command',
                    event = "mdt",
                    shouldClose = true
                },
                {
                    id = 'my_data',
                    title = 'My Data',
                    icon = "person",
                    type = 'command',
                    event = "myaddons-myinfo",
                    shouldClose = true
                },
            }
        }, mdtMenu)
    end
end)

但是当我动态尝试添加带有以下代码的菜单项时，我收到错误。

if myJob.onduty then
        table.insert(mdtMenu.items, {id = 'mdt_signoff', title = 'Sign Off (Duty)', icon = "circle-xmark", type = 'command', event = 'myaddons-toggleduty', shouldClose = true})
    else
        table.insert(mdtMenu.items, {id = 'mdt_signon', title = 'Sign On (Duty)', icon = "check-to-slot", type = 'command', event = 'myaddons-toggleduty', shouldClose = true})
    end

完整的代码块：

local mdtMenu = nil
RegisterNetEvent('qb-radialmenu:client:onRadialmenuOpen', function()
    if mdtMenu ~= nil then
        exports['qb-radialmenu']:RemoveOption(mdtMenu)
        mdtMenu = nil
    end
    
    local myData = QBCore.Functions.GetPlayerData()
    local myJob = myData.job
    
    if myJob.name == "ems" or myJob.name == "police" then
        mdtMenu = exports['qb-radialmenu']:AddOption({
            id = 'job_extras',
            title = 'Job Extras',
            icon = "square-plus",
            items = {
                {
                    id = 'open_mdt',
                    title = 'Open MDT menu',
                    icon = "tablet-screen-button",
                    type = 'command',
                    event = "mdt",
                    shouldClose = true
                },
                {
                    id = 'my_data',
                    title = 'My Data',
                    icon = "person",
                    type = 'command',
                    event = "myaddons-myinfo",
                    shouldClose = true
                },
            }
        }, mdtMenu)
    end
    
    if myJob.onduty then
        table.insert(mdtMenu.items, {id = 'mdt_signoff', title = 'Sign Off (Duty)', icon = "circle-xmark", type = 'command', event = 'myaddons-toggleduty', shouldClose = true})
    else
        table.insert(mdtMenu.items, {id = 'mdt_signon', title = 'Sign On (Duty)', icon = "check-to-slot", type = 'command', event = 'myaddons-toggleduty', shouldClose = true})
    end
end)

我收到的错误：

它正在使用以下代码，但这意味着我必须为每个动态菜单项重新创建完整的菜单，使菜单不那么动态：

local mdtMenu = nil
RegisterNetEvent('qb-radialmenu:client:onRadialmenuOpen', function()
    if mdtMenu ~= nil then
        exports['qb-radialmenu']:RemoveOption(mdtMenu)
        mdtMenu = nil
    end
    
    local myData = QBCore.Functions.GetPlayerData()
    local myJob = myData.job
    
    if myJob.name == "ems" or myJob.name == "police" then
        if myJob.onduty then
            mdtMenu = exports['qb-radialmenu']:AddOption({
                id = 'job_extras',
                title = 'Job Extras',
                icon = "square-plus",
                items = {
                    {
                        id = 'open_mdt',
                        title = 'Open MDT menu',
                        icon = "tablet-screen-button",
                        type = 'command',
                        event = "mdt",
                        shouldClose = true
                    },
                    {
                        id = 'my_data',
                        title = 'My Data',
                        icon = "person",
                        type = 'command',
                        event = "myaddons-myinfo",
                        shouldClose = true
                    },
                    {
                        id = 'mdt_signoff',
                        title = 'Sign Off (Duty)',
                        icon = "circle-xmark",
                        type = 'command',
                        event = 'myaddons-toggleduty',
                        shouldClose = true
                    },
                }
            }, mdtMenu)
        else
            mdtMenu = exports['qb-radialmenu']:AddOption({
                id = 'job_extras',
                title = 'Job Extras',
                icon = "square-plus",
                items = {
                    {
                        id = 'open_mdt',
                        title = 'Open MDT menu',
                        icon = "tablet-screen-button",
                        type = 'command',
                        event = "mdt",
                        shouldClose = true
                    },
                    {
                        id = 'my_data',
                        title = 'My Data',
                        icon = "person",
                        type = 'command',
                        event = "myaddons-myinfo",
                        shouldClose = true
                    },
                    {
                        id = 'mdt_signon',
                        title = 'Sign On (Duty)',
                        icon = "check-to-slot",
                        type = 'command',
                        event = 'myaddons-toggleduty',
                        shouldClose = true
                    },
                }
            }, mdtMenu)
        end
    end
end)

编辑3：下面的代码似乎可以工作（感谢@dt192！！）：

local mdtMenu = nil
RegisterNetEvent('qb-radialmenu:client:onRadialmenuOpen', function()
    if mdtMenu ~= nil then
        exports['qb-radialmenu']:RemoveOption(mdtMenu)
        mdtMenu = nil
    end
    
    local myData = QBCore.Functions.GetPlayerData()
    local myJob = myData.job
    
    if myJob.name == "ems" or myJob.name == "police" then
        local myTable = createRadialJobExtrasMenu(myJob.onduty)
        
        mdtMenu = exports['qb-radialmenu']:AddOption(myTable, mdtMenu)
    end
end)

AddEventHandler('onResourceStop', function(resource)
    if mdtMenu ~= nil then
        exports['qb-radialmenu']:RemoveOption(mdtMenu)
        mdtMenu = nil
    end
end)

使用以下功能：

function createRadialJobExtrasMenu(onduty)
    local tbl = {
        id = 'job_extras',
        title = 'Job Extras',
        icon = "square-plus",
        items = {
            {
                id = 'open_mdt',
                title = 'Open MDT menu',
                icon = "tablet-screen-button",
                type = 'command',
                event = "mdt",
                shouldClose = true
            },
            {
                id = 'my_data',
                title = 'My Data',
                icon = "person",
                type = 'command',
                event = "myaddons-myinfo",
                shouldClose = true
            },
            {
                id = 'mdt_signon',
                title = 'Sign On (Duty)',
                icon = "check-to-slot",
                type = 'command',
                event = 'myaddons-toggleduty',
                shouldClose = true
            },
        }
    }

    if onduty then
        tbl.items[3].id = 'mdt_signoff'
        tbl.items[3].title = 'Sign Off (Duty)'
        tbl.items[3].icon = 'circle-xmark'
    end
    
    return tbl
end

lua lua-table

0赞 dt192 8/12/2023

似乎你应该这样做而不是mdtMenu.items.mdt_signonoff = mdt_signonofftable.insert(mdtMenu.items.mdt_signonoff, mdt_signonoff)

0赞 C Kolkman 8/12/2023

@dt192 我似乎对这个评论越来越近了（例如，数字现在不再显示），但数组的结构似乎不正确，因为菜单没有显示在游戏中。在我问题的底部，您会看到 2 个正确的结构（值班和非值班代码）。

答：

0赞 Vlad 8/12/2023 #1

您正在创建数组数组。但是，在将保存集合值的数组存储在保存所有集合的顶级数组中时，您没有提供键值。您刚刚将密钥存储为集合本身中的项。

它应该是什么样子：

items = {
  open_mdt = {
    collection1
  },
  my_data = {
    collection2
  }
}

此格式仅适用于没有空格的字符串，处理数字和任意字符串的一般语法为：

items = {
  ["open mdt with spaces"] = {
    collection1
  },
  [37] = {
    collection2
  }
}

0赞 C Kolkman 8/12/2023

您好弗拉德，感谢您的快速回复！对不起，我仍然不完全理解。您能否使用我需要的代码给出一个完整的示例？

1赞 dt192 8/12/2023 #2

你可能会做这样的事情

    local tbl = {
        id = 'job_extras',
        title = 'Job Extras',
        icon = "square-plus",
        items = {
            {
                id = 'open_mdt',
                title = 'Open MDT menu',
                icon = "tablet-screen-button",
                type = 'command',
                event = "mdt",
                shouldClose = true
            },
            {
                id = 'my_data',
                title = 'My Data',
                icon = "person",
                type = 'command',
                event = "myaddons-myinfo",
                shouldClose = true
            },
            {
                id = 'mdt_signon',
                title = 'Sign On (Duty)',
                icon = "check-to-slot",
                type = 'command',
                event = 'myaddons-toggleduty',
                shouldClose = true
            },
        }
    }

    if myJob.onduty then
        tbl.items[3].id = 'mdt_signoff'
        tbl.items[3].title = 'Sign Off (Duty)'
        tbl.items[3].icon = 'circle-xmark'
    end

    mdtMenu = exports['qb-radialmenu']:AddOption(tbl, mdtMenu)

您也可以像这样内联检查

    mdtMenu = exports['qb-radialmenu']:AddOption({
        id = 'job_extras',
        title = 'Job Extras',
        icon = "square-plus",
        items = {
            {
                id = 'open_mdt',
                title = 'Open MDT menu',
                icon = "tablet-screen-button",
                type = 'command',
                event = "mdt",
                shouldClose = true
            },
            {
                id = 'my_data',
                title = 'My Data',
                icon = "person",
                type = 'command',
                event = "myaddons-myinfo",
                shouldClose = true
            },
            {
                id = myJob.onduty and 'mdt_signoff' or 'mdt_signon',
                title = myJob.onduty and 'Sign Off (Duty)' or 'Sign On (Duty)',
                icon = myJob.onduty and 'circle-xmark' or 'check-to-slot',
                type = 'command',
                event = 'myaddons-toggleduty',
                shouldClose = true
            },
        }
    }, mdtMenu)

或（不确定此时使用的是哪个版本）

        mdtMenu.item.mdt_signonoff = {
            title = myJob.onduty and 'Sign Off (Duty)' or 'Sign On (Duty)',
            icon = myJob.onduty and 'circle-xmark' or 'check-to-slot',
            type = 'command',
            event = 'myaddons-toggleduty',
            shouldClose = true
        }

0赞 C Kolkman 8/12/2023

你是天才！这似乎工作正常！我已将其标记为答案，并在我的原始帖子中添加了我的新代码！Edit3

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