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</pre></div><pre class="rust"><code><span class="kw">use </span>serde::{Deserialize,Serialize,Deserializer};
<span class="comment">//use sqlx::{sqlite::SqlitePool, Row, Sqlite};
// use sqlx::{
// FromRow,
// decode::Decode,
// any::{AnyRow, AnyValueRef},
// database::{
// Database,
// HasValueRef,
// },
// Row,
// // Error,
// };
// use std::error::Error;
// use std::str::FromStr;
//use super::User;
// #[derive(sqlx::FromRow)][derive(sqlx::Type)]
//#[derive(sqlx::Type)]
//#[sqlx(type_name = &quot;userstatus_type&quot;)]
// #[derive(sqlx::FromRow)]
//#[sqlx(display_fromstr)]
</span><span class="attr">#[derive(Debug, Clone, PartialEq, PartialOrd, Serialize, Deserialize)]
</span><span class="kw">pub enum </span>UserStatus {
Created,
Active,
Pending,
Lock,
Unknown,
}
<span class="kw">impl </span>UserStatus {
<span class="attr">#[allow(dead_code)]
</span><span class="kw">pub fn </span>from_str(status: <span class="kw-2">&amp;</span>str) -&gt; <span class="self">Self </span>{
<span class="kw">match </span>status {
<span class="string">&quot;created&quot;</span>|<span class="string">&quot;Created&quot; </span>=&gt; UserStatus::Created,
<span class="string">&quot;active&quot;</span>|<span class="string">&quot;Active&quot; </span>=&gt; UserStatus::Active,
<span class="string">&quot;pending&quot;</span>|<span class="string">&quot;Pending&quot; </span>=&gt; UserStatus::Pending,
<span class="string">&quot;lock&quot;</span>|<span class="string">&quot;Lock&quot; </span>=&gt; UserStatus::Lock,
<span class="kw">_ </span>=&gt; UserStatus::Unknown,
}
}
}
<span class="kw">impl </span>std::fmt::Display <span class="kw">for </span>UserStatus {
<span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, f: <span class="kw-2">&amp;mut </span>std::fmt::Formatter&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; std::fmt::Result {
<span class="kw">match </span><span class="self">self </span>{
UserStatus::Created =&gt; <span class="macro">write!</span>(f,<span class="string">&quot;Created&quot;</span>),
UserStatus::Active =&gt; <span class="macro">write!</span>(f,<span class="string">&quot;Active&quot;</span>),
UserStatus::Pending =&gt; <span class="macro">write!</span>(f,<span class="string">&quot;Pending&quot;</span>),
UserStatus::Lock =&gt; <span class="macro">write!</span>(f,<span class="string">&quot;Lock&quot;</span>),
UserStatus::Unknown =&gt; <span class="macro">write!</span>(f,<span class="string">&quot;Unknown&quot;</span>),
}
}
}
<span class="kw">impl </span>Default <span class="kw">for </span>UserStatus {
<span class="kw">fn </span>default() -&gt; <span class="self">Self </span>{
UserStatus::Unknown
}
}
<span class="attr">#[allow(dead_code)]
</span><span class="kw">pub fn </span>deserialize_user_status&lt;<span class="lifetime">&#39;de</span>, D&gt;(deserializer: D) -&gt; <span class="prelude-ty">Result</span>&lt;UserStatus, D::Error&gt;
<span class="kw">where </span>D: Deserializer&lt;<span class="lifetime">&#39;de</span>&gt; {
<span class="kw">let </span>buf = String::deserialize(deserializer)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(UserStatus::from_str(<span class="kw-2">&amp;</span>buf))
}
<span class="comment">// impl sqlx::Type&lt;sqlx::Any&gt; for UserStatus {
// fn type_info() -&gt; sqlx::any::AnyTypeInfo {
// //let res: sqlx::any::AnyTypeInfo = String::type_info();
// let res = &lt;str as sqlx::Type&lt;sqlx::Any&gt;&gt;::type_info();
// // let res = sqlx::any::AnyTypeInfo::default(); // String::type_info();
// res
// // String::type_info()
// }
// // fn compatible(ty: &amp;&lt;sqlx::Any&gt;::AnyTypeInfo) -&gt; bool {
// // *ty == Self::type_info()
// // }
// }
/*
impl sqlx::Type&lt;sqlx::Sqlite&gt; for UserStatus {
fn type_info() -&gt; sqlx::sqlite::SqliteTypeInfo {
let t = String::type_info();
t
}
}
impl sqlx::Type&lt;sqlx::Mssql&gt; for UserStatus {
fn type_info() -&gt; sqlx::mssql::MssqlTypeInfo {
String::type_info()
}
}
impl sqlx::Type&lt;sqlx::MySql&gt; for UserStatus {
fn type_info() -&gt; sqlx::mysql::MySqlTypeInfo {
String::type_info()
}
}
impl sqlx::Type&lt;sqlx::Postgres&gt; for UserStatus {
fn type_info() -&gt; sqlx::postgres::PgTypeInfo {
String::type_info()
}
}
impl&lt;&#39;q&gt; sqlx::Encode&lt;&#39;q, sqlx::Any&gt; for UserStatus {
fn encode_by_ref(
&amp;self,
args: &amp;mut sqlx::any::AnyArgumentBuffer&lt;&#39;q&gt;,
) -&gt; sqlx::encode::IsNull {
self.encode_by_ref(args)
}
}
*/
/*
impl&lt;&#39;r&gt; sqlx::Decode&lt;&#39;r, sqlx::Any&gt; for UserStatus {
fn decode(
// value: &lt;DB as HasValueRef&lt;&#39;r&gt;&gt;::AnyValueRef,
value: sqlx::any::AnyValueRef&lt;&#39;r&gt;,
) -&gt; Result&lt;Self, sqlx::error::BoxDynError&gt; {
//let string = value. try_decode()?;
//let string = &lt;&amp;str as Decode&lt;AnyValueRef&gt;&gt;::decode(value)?;
let v = value.to_owned();
let string = value.parse()?;
let value = UserStatus::from_str(&amp;string);
Ok(value)
}
}
impl&lt;&#39;r, DB: Database&gt; Decode&lt;&#39;r, DB&gt; for UserStatus
where
// we want to delegate some of the work to string decoding so let&#39;s make sure strings
// are supported by the database
&amp;&#39;r str: Decode&lt;&#39;r, DB&gt;
{
fn decode(
value: &lt;DB as HasValueRef&lt;&#39;r&gt;&gt;::ValueRef,
) -&gt; Result&lt;UserStatus, Box&lt;dyn Error + &#39;static + Send + Sync&gt;&gt; {
// the interface of ValueRef is largely unstable at the moment
// so this is not directly implementable
// however, you can delegate to a type that matches the format of the type you want
// to decode (such as a UTF-8 string)
let val = &lt;&amp;str as Decode&lt;DB&gt;&gt;::decode(value)?;
// now you can parse this into your type (assuming there is a `FromStr`)
//Ok(value.parse()?)
Ok(UserStatus::from_str(&amp;val))
}
}
*/
/*
impl&lt;&#39;r&gt; Decode&lt;&#39;r, sqlx::Any&gt; for UserStatus {
fn decode(
value: sqlx::any::AnyValueRef&lt;&#39;r&gt;,
) -&gt; Result&lt;Self, sqlx::error::BoxDynError&gt; {
//let mut decoder = &lt;dyn sqlx::any::AnyDecode&gt;::new(value)?;
//let string = decoder.try_decode::&lt;String&gt;()?;
//let username = decoder.try_decode::&lt;String&gt;()?;
//let photo = decoder.try_decode::&lt;Option&lt;String&gt;&gt;()?;
let string = &lt;&amp;str as Decode&lt;sqlx::Any&gt;&gt;::decode(value)?;
let value = UserStatus::from_str(&amp;string);
Ok(value)
}
}
impl&lt;&#39;r&gt; Decode&lt;&#39;r, sqlx::Sqlite&gt; for UserStatus {
fn decode(
value: sqlx::sqlite::SqliteValueRef&lt;&#39;r&gt;,
) -&gt; Result&lt;Self, sqlx::error::BoxDynError&gt; {
let string = &lt;&amp;str as Decode&lt;sqlx::Sqlite&gt;&gt;::decode(value)?;
let value = UserStatus::from_str(string);
Ok(value)
}
}
// impl&lt;&#39;r&gt; Decode&lt;&#39;r, sqlx::Mssql&gt; for UserStatus {
// fn decode(
// value: sqlx::mssql::MssqlValueRef&lt;&#39;r&gt;,
// ) -&gt; Result&lt;UserStatus, Box&lt;dyn Error + &#39;static + Send + Sync&gt;&gt; {
// //) -&gt; Result&lt;Self, sqlx::error::BoxDynError&gt; {
// let string = &lt;&amp;str as Decode&lt;sqlx::Mssql&gt;&gt;::decode(value)?;
// let value = UserStatus::from_str(string);
// Ok(value)
// }
// }
impl&lt;&#39;r&gt; Decode&lt;&#39;r, sqlx::MySql&gt; for UserStatus {
fn decode(
value: sqlx::mysql::MySqlValueRef&lt;&#39;r&gt;,
) -&gt; Result&lt;Self, sqlx::error::BoxDynError&gt; {
let string = &lt;&amp;str as Decode&lt;sqlx::MySql&gt;&gt;::decode(value)?;
let value = UserStatus::from_str(string);
Ok(value)
}
}
impl&lt;&#39;r&gt; Decode&lt;&#39;r, sqlx::Postgres&gt; for UserStatus {
fn decode(
value: sqlx::postgres::PgValueRef&lt;&#39;r&gt;,
) -&gt; Result&lt;Self, sqlx::error::BoxDynError&gt; {
//let mut decoder = sqlx::postgres::types::PgRecordDecoder::new(value)?;
////let username = decoder.try_decode::&lt;String&gt;()?;
//let string = decoder.try_decode::&lt;String&gt;()?;
let string = &lt;&amp;str as Decode&lt;sqlx::Postgres&gt;&gt;::decode(value)?;
let value = UserStatus::from_str(string);
Ok(value)
}
}
impl FromRow&lt;&#39;_, AnyRow&gt; for UserStatus {
fn from_row(row: &amp;AnyRow) -&gt; sqlx::Result&lt;Self&gt; {
let v: String = row.try_get(&quot;status&quot;)?;
Ok(
UserStatus::from_str(&amp;v)
)
}
}
impl FromStr for UserStatus {
type Err = ();
fn from_str(s: &amp;str) -&gt; Result&lt;Self, Self::Err&gt; {
Ok(UserStatus::from_str(s))
}
}
*/</span></code></pre></div></section></main><script>
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