Question

我将后端api服务器的Loopback用于我的数据库，而Meteor用于前端。在Meteor中，我使用Axios来调用api。

我想使用Meteor.call，以便我可以在同一文件中管理所有相关的api调用函数，以便于管理，例如发票在发票文件中获取，添加，编辑，删除等等。

如果我要调用Axios直接在表单提交上发布到API，我的数据库中的记录只显示插入的一个记录（这是预期的）。但是如果我要在Meteor.call中调用Axios，它将导致数据库具有相同上下文的双重条目。

我不太明白双重录入的原因或来源。有人可以解释一下吗？

感谢。

我的Meteor方法调用api来插入一个新的textContext：

Meteor.methods({
    'textContext.insert': function(myText, token) {
        new SimpleSchema({
            myText: {
                type: String,
                min: 1
            },
            token: {
                type: String,
                label: 'Authorization',
                min: 1
            }
        }).validate({myText, token});

        const jsonToken = JSON.parse(token);
        const url = `http://localhost:3001/v1/users/${jsonToken.userId}/textContexts`;
        const data = {
            text_context: myText,
            user_id: jsonToken.userId
        };

        return axios({
            method: 'post',
            url,
            headers: {'Authorization': jsonToken.token},
            data
        })
        .then(res => {
            console.log(res.data);
            return res.data;
        })
        .catch((err) => {
            if (err instanceof Error) {
                console.log('Error:', err.message);
            }
        });
    }
});

Loopback中的TextContext模型，text-context.json，从textContextBasic扩展而来，只包含created_at：

{
  "name": "textContext",
  "base": "textContextBasic",
  "idInjection": true,
  "options": {
    "validateUpsert": true
  },
  "properties": {
    "text_context": {
      "type": "string"
    }
  },
  "validations": [],
  "relations": {
    "user": {
      "type": "belongsTo",
      "model": "user",
      "foreignKey": "user_id"
    }
  },
  "acls": [
    {
      "principalType": "ROLE",
      "principalId": "$everyone",
      "permission": "DENY"
    },
    {
      "accessType": "EXECUTE",
      "principalType": "ROLE",
      "principalId": "$authenticated",
      "permission": "ALLOW",
      "property": "create"
    },
    {
      "accessType": "EXECUTE",
      "principalType": "ROLE",
      "principalId": "$authenticated",
      "permission": "ALLOW",
      "property": "createOrReplace"
    },
    {
      "accessType": "EXECUTE",
      "principalType": "ROLE",
      "principalId": "$owner",
      "permission": "ALLOW",
      "property": "findById"
    },
    {
      "accessType": "READ",
      "principalType": "ROLE",
      "principalId": "$owner",
      "permission": "ALLOW",
      "property": "findOne"
    },
    {
      "accessType": "EXECUTE",
      "principalType": "ROLE",
      "principalId": "$owner",
      "permission": "ALLOW",
      "property": "find"
    }
  ],
  "methods": {}
}

Loopback中的User.json模型：

{
  "name": "user",
  "base": "User",
  "idInjection": true,
  "options": {
    "validateUpsert": true
  },
  "properties": {
    "created_at": {
      "type": "date",
      "required": true,
      "default": "$now"
    },
    "updated_at": {
      "type": "date",
      "required": true,
      "default": "$now"
    }
  },
  "validations": [],
  "relations": {
    "textContexts": {
      "type": "hasMany",
      "model": "textContext",
      "foreignKey": "user_id"
    }
  },
  "acls": [
    {
      "accessType": "*",
      "principalType": "ROLE",
      "principalId": "$everyone",
      "permission": "DENY"
    },
    {
      "accessType": "*",
      "principalType": "ROLE",
      "principalId": "admin",
      "permission": "ALLOW"
    },
    {
      "principalType": "ROLE",
      "principalId": "$owner",
      "permission": "ALLOW",
      "property": "__get__textContext"
    },
    {
      "principalType": "ROLE",
      "principalId": "$owner",
      "permission": "ALLOW",
      "property": "__create__textContext"
    },
    {
      "principalType": "ROLE",
      "principalId": "$owner",
      "permission": "ALLOW",
      "property": "__findById__textContext"
    },
    {
      "principalType": "ROLE",
      "principalId": "$owner",
      "permission": "ALLOW",
      "property": "__updateById__textContext"
    }
  ],
  "methods": {}
}

Answer 1

最后找到问题的根源，它需要包含在(Meteor.isServer)中，因为它在客户端。

对api的流星调用导致双重条目

1 个答案: