JS Contract

table

对象 Table

multi index table 对象

成员属性

name

table 名

类型：String

实例：

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exports.hi = v => {
    var players = db.players(action.account, action.account); 
    console.log(players.name);
};

code

指向合约发布者的名称

类型：String

实例：

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exports.hi = v => {
    var players = db.players(action.account, action.account); 
    console.log(players.code);
};

scope

table 中数据所属的 account_name

类型：String

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exports.hi = v => {
    var players = db.players(action.account, action.account); 
    console.log(players.scope);
};

indexes

查询当前索引，返回所有索引对象，每个索引是一个新的 Table 对象

类型：Object

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exports.hi = v => {
    var players = db.players(action.account, action.account); 
    console.log(players.indexes);
};

成员函数

emplace

向 table 存入新数据

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Table.emplace(payer,val);

调用参数:

实例：

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exports.hi = v => {
    var players = db.players(action.account, action.account);
    players.emplace(action.account, {
        title: "ceo",
        age: 48,
        nickname: "lion1",
        id: 123
    });
};

find

从 table 查找数据

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Table.find(id);

调用参数:

返回结果：

实例:

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exports.hi = v => {
    var players = db.players(action.account, action.account);
    console.log(players.find(v).data)
};

get_primary_key

生成自增主键

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Table.get_primary_key();

实例:

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exports.hi = v => {
    var players = db.players(action.account, action.account);
    console.log(players.get_primary_key())
};

lowerbound

从 table 查找小于参数结果

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Table.lowerbound(id);

调用参数:

返回结果：

实例:

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exports.hi1 = v => {
    var players = db.players1(action.account, action.account);
    var data = players.lowerbound(123);
    console.log(data.data, data1.data);
};

upperbound

从 table 查找大于参数结果

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Table.upperbound(id);

调用参数:

返回结果：

实例:

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exports.hi1 = v => {
    var players = db.players1(action.account, action.account);
    var data1 = players.upperbound(123);
    console.log(data.data, data1.data);
};

toString

返回对象的字符串表示，一般返回 “[Native Object]”，对象可以根据自己的特性重新实现

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Table.toString();

返回结果:

实例：

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exports.hi1 = v => {
    var players = db.players1(action.account, action.account);
    console.log(players.toString());
};

toJSON

返回对象的 JSON 格式表示，一般返回对象定义的可读属性集合

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Table.toJSON(key);

调用参数:

返回结果:

实例：

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exports.hi1 = key => {
    var players = db.players1(action.account, action.account);
    console.log(players.toJSON(key));
};