Elixir 如何组合变更集错误?
我正在尝试合并变更集错误 我有一个属于用户模式的机构模式。每个字段上都需要一些字段,但错误响应如下所示:Elixir 如何组合变更集错误?,elixir,phoenix-framework,Elixir,Phoenix Framework,我正在尝试合并变更集错误 我有一个属于用户模式的机构模式。每个字段上都需要一些字段,但错误响应如下所示: { "errors": { "user": { "password_confirmation": [ "The password confirmation does not match the password." ], "password": [
{
"errors": {
"user": {
"password_confirmation": [
"The password confirmation does not match the password."
],
"password": [
"This field is required."
],
"name": [
"This field is required."
]
},
"institution": {
"web_address": [
"is required."
]
},
}
}
user_changeset =
User.normal_user_changeset(%User{}, %{
:email => Map.get(attrs, "email"),
:password => Map.get(attrs, "password"),
:password_confirmation => Map.get(attrs, "password_confirmation"),
:name => Map.get(attrs, "name"),
:postcode => Map.get(attrs, "postcode"),
:dob => Map.get(attrs, "dob")
})
institution =
%Institution{}
|> Institution.changeset(%{
:web_address => Map.get(attrs, "web_address"),
:person_responsible => Map.get(attrs, "person_responsible"),
:annual_turnover => Map.get(attrs, "annual_turnover")
})
|> Ecto.Changeset.put_assoc(:user, user_changeset)
|> Repo.insert()
如何将这些错误对象合并为一个
我的插入看起来像:
{
"errors": {
"user": {
"password_confirmation": [
"The password confirmation does not match the password."
],
"password": [
"This field is required."
],
"name": [
"This field is required."
]
},
"institution": {
"web_address": [
"is required."
]
},
}
}
user_changeset =
User.normal_user_changeset(%User{}, %{
:email => Map.get(attrs, "email"),
:password => Map.get(attrs, "password"),
:password_confirmation => Map.get(attrs, "password_confirmation"),
:name => Map.get(attrs, "name"),
:postcode => Map.get(attrs, "postcode"),
:dob => Map.get(attrs, "dob")
})
institution =
%Institution{}
|> Institution.changeset(%{
:web_address => Map.get(attrs, "web_address"),
:person_responsible => Map.get(attrs, "person_responsible"),
:annual_turnover => Map.get(attrs, "annual_turnover")
})
|> Ecto.Changeset.put_assoc(:user, user_changeset)
|> Repo.insert()
我希望错误响应为:
{
"errors": {
"password_confirmation": [
"The password confirmation does not match the password."
],
"password": [
"This field is required."
],
"name": [
"This field is required."
]
"web_address": [
"is required."
]
}
}
我的回退控制器中有此功能(默认情况下):
errors
只是%exto.Changeset{}
结构中的值之一
也就是说,人们总是可以修改%exto.Changeset{}
来提供自定义错误
:
def fix_errors(%exto.Changeset{errors:errors}=ch)do
%转换集{ch| errors:errors++[:my_custom_error]}
结束
您需要的只是使用上述函数重新映射输入,并将结果嵌入变更集链中:
机构=
%机构{}
|> ...
|>外部变更集放置关联(:用户,用户变更集)
|>修复错误()
|>回购协议插入()
无论您是否为
错误前后提供了有效的长生不老药术语,我都可以演示如何执行转换本身。例如:
错误=%{
机构:%{web_地址:[“是必需的”]},
用户:%{
名称:[“是必需的。”],
密码:[“是必需的。”],
密码确认:[“不匹配”]
}
}
可能会扁平化为:
输入
|>映射(fn{,v}->v end)
|>枚举减少(&Map.merge/2)
#⇒ %{
#名称:[“是必需的。”],
#密码:[“是必需的。”],
#密码确认:[“不匹配”],
#网址:[“是必需的”]
# }
您可以获取错误
字段的值,并使用Enum.reduce/3将它们全部合并:
map = Jason.decode! """
{
"errors": {
"user": {
"password_confirmation": [
"The password confirmation does not match the password."
],
"password": [
"This field is required."
],
"name": [
"This field is required."
]
},
"institution": {
"web_address": [
"is required."
]
}
}
}
"""
Map.update!(map, "errors", fn errors ->
errors |> Map.values() |> Enum.reduce(%{}, &Map.merge/2)
end)
|> IO.inspect
输出:
%{
"errors" => %{
"name" => ["This field is required."],
"password" => ["This field is required."],
"password_confirmation" => ["The password confirmation does not match the password."],
"web_address" => ["is required."]
}
}
请澄清您想要得到什么(结果示例会很好。)这里的“合并”是什么意思?显示的错误输出需要什么输出?编辑问题FYI:您不需要手动获取attrs
映射中字符串键的值。您可以将其直接传递给cast,并且exto
将为您处理它:User.normal\u User\u变更集(%User{},attrs)