我们希望客户端能够发布到端点,例如:
[Route("Account", Name = "CreateAccount", Order = 1)]
[HttpPost]
public Account CreateAccount([FromBody] Account account)
{
var newAccount = _accountService.CreateAccountEntity(account);
return newAccount;
}
我们know可以做到这一点:
POST [Organization URI]/api/data/v8.2/accounts HTTP/1.1
Content-Type: application/json; charset=utf-8
OData-MaxVersion: 4.0
OData-Version: 4.0
Accept: application/json
{
"name": "Sample Account",
"creditonhold": false,
"address1_latitude": 47.639583,
"description": "This is the description of the sample account",
"revenue": 5000000,
"accountcategorycode": 1
}
我们如何向消费者展示每个帖子/帖子的要求?
用不同的词语来表达,如果我需要使用CRM 2016提供的Web API更新自定义或基本实体上的记录,我如何知道创建或更新实体需要哪些字段?
答案 0 :(得分:10)
您可以使用WebApi端点查询Dynamics 365元数据,如SDK所示。
例如,要检索account
实体的所有属性(包括需求级别):
GET [Organization URI]/api/data/v8.2/EntityDefinitions(LogicalName='account')/Attributes HTTP/1.1
OData-MaxVersion: 4.0
OData-Version: 4.0
Accept: application/json
Content-Type: application/json; charset=utf-8
答案 1 :(得分:6)
您可以使用RetrieveEntityRequest
获取实体的元数据。
在以下示例中,将检索实体Account的元数据:
var request = new RetrieveEntityRequest
{
EntityFilters = EntityFilters.Entity | EntityFilters.Attributes,
LogicalName = "account"
};
var response = (RetrieveEntityResponse)_serviceProxy.Execute(request);
响应对象包含EntityMetadata
属性。在其中,您可以找到如下属性的需求设置:
EntityMetadata metadata = reponse.EntityMetadata;
bool isRevenueRequired = metadata.Attributes
.First<AttributeMetadata>(a -> a.LogicalName == "revenue")
.RequiredLevel.Value == AttributeRequiredLevel.ApplicationRequired;
答案 2 :(得分:6)
为了使用SOAP端点获取实体的所有元数据,您可以使用RetrieveEntityRequest:
var request = new RetrieveEntityRequest
{
EntityFilters = Microsoft.Xrm.Sdk.Metadata.EntityFilters.All,
LogicalName = "account"
}
var response = (RetrieveEntityResponse)organizationService.Execute(request);
EntityFiters是一个枚举,允许您指定要获取的元数据:
[Flags]
public enum EntityFilters
{
//
// Summary:
// Use this to retrieve only entity information. Equivalent to EntityFilters.Default.
// Value = 1.
Entity = 1,
//
// Summary:
// Use this to retrieve only entity information. Equivalent to EntityFilters.Entity.
// Value = 1.
Default = 1,
//
// Summary:
// Use this to retrieve entity information plus attributes for the entity. Value
// = 2.
Attributes = 2,
//
// Summary:
// Use this to retrieve entity information plus privileges for the entity. Value
// = 4.
Privileges = 4,
//
// Summary:
// Use this to retrieve entity information plus entity relationships for the entity.
// Value = 8.
Relationships = 8,
//
// Summary:
// Use this to retrieve all data for an entity. Value = 15.
All = 15
}
这是一个标志枚举,所以你可以像这样使用它:
var request = new RetrieveEntityRequest
{
EntityFilters = EntityFilters.Privileges | EntityFilters.Entity,
LogicalName = "account"
}
或者只是使用All
值来获取所有必需的元数据。在您的尝试中,您无法检索元数据,因为您只询问了实体元数据,并且您对属性元数据感兴趣。
因此,以您的代码片段为基础,我将以下列方式使用它:
[Route("Account", Name = "CreateAccount", Order = 1)]
[HttpPost]
public Account CreateAccount([FromBody] Account account)
{
VerifyRequiredFields(account);
var newAccount = _accountService.CreateAccountEntity(account);
return newAccount;
}
private void VerifyRequiredFields(Account account)
{
var response = GetEntityMetadata(account);
var requiredAttributes = response.EntityMetadata.Attributes.Where(a => a.RequiredLevel?.Value == AttributeRequiredLevel.SystemRequired);
foreach(var requiredAttribute in requiredAttributes)
{
if(CheckIfValueIsProvided(requiredAttribute.LogicalName, account))
{
throw new HttpResponseException(Request.CreateErrorResponse(HttpStatusCode.BadRequest, $"You are missing required value {requiredAttribute.LogicalName}"));
}
}
}
方法GetEntityMetadata
只是执行上一个示例中的操作,因此调用RetrieveEntityRequest
并返回RetrieveEntityResponse
。
当然,方法CheckIfValueIsProvided
的实现取决于您的Account模型类的定义方式,但您可能需要在模型和CRM实体模型之间进行某种映射(以了解如何映射例如字段“accountnumber”到模型中的某个字段)。这远远超出了这个问题的范围,但我相信你已经足够了解这个问题了。
请记住,这只是一个例子。您不应该将此逻辑保留在控制器类中,您应该将其移动到某个实用程序类,您可以在不同的控制器中重用它。元数据不会经常更改(并且您可能已经控制了这些更改),因此您可能还希望在Web应用程序中的某处缓存元数据等。我希望您已经知道可以做什么,但整个设计如果逻辑是另一个故事。
如果你想从JavaScript做到这一点,你应该坚持使用webAPI:
http://CRMADDRESS/api/data/v8.2/EntityDefinitions(LogicalName='account')/Attributes?$select=LogicalName,RequiredLevel
将获得您想要的(属性名称及其所需级别)。它看起来像这样:
{
"LogicalName":"preferredcontactmethodcodename","RequiredLevel":{
"Value":"None","CanBeChanged":false,"ManagedPropertyLogicalName":"canmodifyrequirementlevelsettings"
},"MetadataId":"8663b910-af86-4dea-826e-8222706372f4"
},{
"@odata.type":"#Microsoft.Dynamics.CRM.StringAttributeMetadata","LogicalName":"emailaddress3","RequiredLevel":{
"Value":"None","CanBeChanged":true,"ManagedPropertyLogicalName":"canmodifyrequirementlevelsettings"
},"MetadataId":"97fb4aae-ea5d-427f-9b2b-9a6b9754286e"
},{
"@odata.type":"#Microsoft.Dynamics.CRM.StringAttributeMetadata","LogicalName":"emailaddress2","RequiredLevel":{
"Value":"None","CanBeChanged":true,"ManagedPropertyLogicalName":"canmodifyrequirementlevelsettings"
},"MetadataId":"98b09426-95ab-4f21-87a0-f6775f2b4210"
},{
"@odata.type":"#Microsoft.Dynamics.CRM.StringAttributeMetadata","LogicalName":"emailaddress1","RequiredLevel":{
"Value":"None","CanBeChanged":true,"ManagedPropertyLogicalName":"canmodifyrequirementlevelsettings"
},"MetadataId":"b254ab69-de5a-4edb-8059-bdeb6863c544"
},{
"@odata.type":"#Microsoft.Dynamics.CRM.StringAttributeMetadata","LogicalName":"masteraccountidyominame","RequiredLevel":{
"Value":"None","CanBeChanged":false,"ManagedPropertyLogicalName":"canmodifyrequirementlevelsettings"
},"MetadataId":"a15dedfc-9382-43ac-8d10-7773aa3eefeb"
},{
"@odata.type":"#Microsoft.Dynamics.CRM.StringAttributeMetadata","LogicalName":"address1_city","RequiredLevel":{
"Value":"None","CanBeChanged":true,"ManagedPropertyLogicalName":"canmodifyrequirementlevelsettings"
},"MetadataId":"ca8d0a94-8569-4154-b511-718e11635449"
},{
"@odata.type":"#Microsoft.Dynamics.CRM.LookupAttributeMetadata","LogicalName":"slaid","RequiredLevel":{
"Value":"None","CanBeChanged":true,"ManagedPropertyLogicalName":"canmodifyrequirementlevelsettings"
},"MetadataId":"6bdcd7f1-5865-4fef-91b0-676824b18641"
}
您可以使用此方法在客户端验证请求,以便在向服务器发送请求之前向用户提示他缺少重要数据。