{"id":45513,"date":"2023-07-02T05:58:45","date_gmt":"2023-12-02T03:34:40","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45513-2\/"},"modified":"2024-04-30T11:36:24","modified_gmt":"2024-04-30T03:36:24","slug":"45513-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45513-2\/","title":{"rendered":""},"content":{"rendered":"

\u30cf\u30a4\u30b5\u30a4\uff01\u30aa\u30fc\u30b9\u30c6\u30a3\u30f3\u3084\u3044\u3073\u30fc\u3093\u3002<\/p>\n

\u6982\u8981<\/h1>\n

WordPress\u306eWP_Query\u3092Rust\u3067\u5b9f\u88c5\u3057\u3066\u307f\u305f\u4f53\u9a13\u3092\u632f\u308a\u8fd4\u308a\u307e\u3059\u3002<\/p>\n

\u4e3b\u306bRust\u5b66\u7fd2\u306e\u305f\u3081\u306b\u3084\u3063\u3066\u307f\u305f\u306e\u3067\u3059\u304c\u3001\u3061\u3087\u3063\u3068\u9762\u767d\u304b\u3063\u305f\u306e\u3067\u5171\u6709\u3057\u305f\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n

\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/h2>\n

\u8a18\u4e8b\u3092\u8aad\u3093\u3067\u6c17\u306b\u306a\u3063\u305f\u65b9\u306f\u3001\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3054\u53c2\u8003\u307e\u3067\u306b\u307f\u3066\u3044\u305f\u3060\u3051\u308c\u3070\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

 <\/p>\n

Crate<\/h2>\n

\u4f7f\u3044\u305f\u304b\u3063\u305f\u3089\u3001Crate\u3082\u516c\u958b\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u3069\u3046\u305e\uff01<\/p>\n

 <\/p>\n

\u4f7f\u3044\u65b9<\/h1>\n

\u30af\u30ec\u30fc\u30c8\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u4f7f\u304a\u3046\u3068\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306aAPI\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

use<\/span> wp_query_rs<\/span>::{<\/span>ParamBuilder<\/span>,<\/span> WP_Query<\/span>};<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> bldr<\/span> =<\/span> ParamBuilder<\/span>::<\/span>new<\/span>()<\/span>\r\n        .author<\/span>(<\/span>1<\/span>)<\/span>\r\n        .order<\/span>(<\/span>wp_query_rs<\/span>::<\/span>SqlOrder<\/span>::<\/span>Desc<\/span>)<\/span>\r\n        .orderby<\/span>(<\/span>wp_query_rs<\/span>::<\/span>query<\/span>::<\/span>WpOrderBy<\/span>::<\/span>Date<\/span>)<\/span>\r\n        .posts_per_page<\/span>(<\/span>5<\/span>)<\/span>\r\n        .post_type<\/span>(<\/span>\"guide\"<\/span>.to_string<\/span>());<\/span>\r\n    let<\/span> wp_q<\/span> =<\/span> WP_Query<\/span>::<\/span>new<\/span>(<\/span>bldr<\/span>.params<\/span>())<\/span>.unwrap<\/span>();<\/span>\r\n\r\n    let<\/span> titles<\/span> =<\/span> wp_q<\/span>\r\n        .posts<\/span>\r\n        .iter<\/span>()<\/span>\r\n        .map<\/span>(|<\/span>p<\/span>|<\/span> p<\/span>.post_title<\/span>.clone<\/span>()<\/span> +<\/span> \", published: \"<\/span> +<\/span> &<\/span>p<\/span>.post_date<\/span>.to_string<\/span>());<\/span>\r\n\r\n    for<\/span> (<\/span>i<\/span>,<\/span> title<\/span>)<\/span> in<\/span> titles<\/span>.enumerate<\/span>()<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"Title {}: {}\"<\/span>,<\/span> i<\/span> +<\/span> 1<\/span>,<\/span> title<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092\u81ea\u8eab\u306eWP\u958b\u767a\u7528\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u5bfe\u3057\u3066\u5b9f\u884c\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n
Title 1: BroadCast test 4, published: 2023-08-09\r\nTitle 2: Casino de Espa\u00f1ol, published: 2023-08-01\r\nTitle 3: Casino un Vaso de Agua, published: 2023-07-27\r\nTitle 4: Casino Queso, published: 2023-07-27\r\nTitle 5: Casino Orange, published: 2023-07-25\r\n<\/code><\/pre>\n
\u57fa\u672c\u7684\u306bWP_Query\u306e\u4f7f\u3044\u65b9\u3092\u305d\u306e\u307e\u307eRust\u306b\u6301\u3063\u3066\u304d\u305f\u304b\u3063\u305f\u306e\u3067\u3001WP_Query\u306b\u5165\u3063\u3066\u3044\u308b\u307b\u3068\u3093\u3069\u306e\u6761\u4ef6\u3092\u4e0a\u8a18\u306bParamBuilder\u3067\u8ffd\u52a0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u4e0a\u8a18\u306e\u3088\u3046\u306a\u4f7f\u3044\u65b9\u3092\u3059\u308b\u306b\u306f\u4ee5\u4e0b\u306e\u74b0\u5883\u5909\u6570\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044\u3068\u3044\u3051\u307e\u305b\u3093\u3002WordPress\u306e\u516c\u5f0fDocker\u30a4\u30e1\u30fc\u30b8\u304c\u6307\u5b9a\u3059\u308b\u3082\u306e\u3068\u540c\u3058\u3067\u3059\u3002<\/p>\n
WORDPRESS_DB_HOST=localhost\r\nWORDPRESS_DB_USER=root\r\nWORDPRESS_DB_PASSWORD=password\r\nWORDPRESS_DB_NAME=wordpress\r\n<\/code><\/pre>\n
\u306a\u304a\u3001\u81ea\u8eab\u306emysql\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30d7\u30fc\u30eb\u3092\u7528\u610f\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u95a2\u6570\u3067\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u6e21\u305b\u3070\u3067\u304d\u307e\u3059\u3002<\/p>\n
let<\/span> wp_q<\/span> =<\/span> WP_Query<\/span>::<\/span>with_connection<\/span>(<\/span>&<\/span>mut<\/span> conn<\/span>,<\/span> bldr<\/span>.params<\/span>());<\/span>\r\n<\/code><\/pre>\n
\u5b9f\u88c5\u3067\u5927\u5909\u3060\u3063\u305f\u3053\u3068\u3001\u9762\u767d\u304b\u3063\u305f\u3053\u3068<\/h1>\n
\u5927\u5909\u3067\u3042\u308a\u306a\u304c\u3089\u3001\u305d\u308c\u304c\u6545\u306b\u89e3\u6c7a\u3057\u305f\u6642\u306e\u697d\u3057\u3055\u304c\u3042\u308b\u3002\u305d\u308c\u304c\u307e\u3055\u306b\u6211\u3005\u304c\u611b\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u918d\u9190\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f<\/p>\n
\u30ab\u30e9\u30e0\u6570\u304c\u591a\u304b\u3063\u305f<\/h2>\n
Rust\u306emysql\u30af\u30ec\u30fc\u30c8\u306b\u306f\u3001query_map\u3092\u4f7f\u3046\u3068\u81ea\u52d5\u7684\u306bSQL\u306e\u30d0\u30a4\u30ca\u30ea\u30fc\u3092Rust\u306e\u578b\u306b\u5909\u63db\u3057\u3066\u304f\u308c\u308b\u3068\u3044\u3046\u975e\u5e38\u306b\u3042\u308a\u304c\u305f\u3044\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
let<\/span> selected_payments<\/span> =<\/span> conn<\/span>\r\n        .query_map<\/span>(<\/span>\r\n            \"SELECT customer_id, amount, account_name from payment\"<\/span>,<\/span>\r\n            |(<\/span>customer_id<\/span>,<\/span> amount<\/span>,<\/span> account_name<\/span>)|<\/span> {<\/span>\r\n                Payment<\/span> {<\/span> customer_id<\/span>,<\/span> amount<\/span>,<\/span> account_name<\/span> }<\/span>\r\n            },<\/span>\r\n        )<\/span>?<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5f15\u7528\uff1a\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8 – https:\/\/docs.rs\/mysql\/latest\/mysql\/<\/p>\n
\u3057\u304b\u3057\u3001\u3053\u306e\u6a5f\u80fd\u306f12\u9805\u76ee\u307e\u3067\u3057\u304b\u4f7f\u3048\u305a\u300112\u9805\u76ee\u4ee5\u4e0a\u3060\u3068\u624b\u52d5\u3066\u5217\uff08Row\uff09\u3092\u958b\u68b1\u3057\u3066\u3044\u304b\u306a\u3044\u3068\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n
WordPress\u306ewp_posts\u30c6\u30fc\u30d6\u30eb\u306e\u7d61\u3080\u6570\u306f\u5341\u6570\u9805\u76ee\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u624b\u52d5\u958b\u68b1\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
pub<\/span> fn<\/span> unwrap_row<\/span>(<\/span>row<\/span>:<\/span> &<\/span>mut<\/span> Row<\/span>)<\/span> -><\/span> Result<\/span><<\/span>WP_Post<\/span>,<\/span> FromValueError<\/span>><\/span> {<\/span>\r\n    let<\/span> id<\/span>:<\/span> u64<\/span> =<\/span> row<\/span>.take_opt<\/span>(<\/span>0<\/span>)<\/span>.unwrap<\/span>()<\/span>?<\/span>;<\/span>\r\n    let<\/span> post_author<\/span>:<\/span> u64<\/span> =<\/span> row<\/span>.take_opt<\/span>(<\/span>1<\/span>)<\/span>.unwrap<\/span>()<\/span>?<\/span>;<\/span>\r\n    let<\/span> comment_count<\/span>:<\/span> u64<\/span> =<\/span> row<\/span>.take_opt<\/span>(<\/span>2<\/span>)<\/span>.unwrap<\/span>()<\/span>?<\/span>;<\/span>\r\n    let<\/span> post_parent<\/span>:<\/span> u64<\/span> =<\/span> row<\/span>.take_opt<\/span>(<\/span>3<\/span>)<\/span>.unwrap<\/span>()<\/span>?<\/span>;<\/span>\r\n...<\/span>\r\n    let<\/span> post_content_filtered<\/span>:<\/span> String<\/span> =<\/span> row<\/span>.take_opt<\/span>(<\/span>19<\/span>)<\/span>.unwrap<\/span>()<\/span>?<\/span>;<\/span>\r\n    let<\/span> guid<\/span>:<\/span> String<\/span> =<\/span> row<\/span>.take_opt<\/span>(<\/span>20<\/span>)<\/span>.unwrap<\/span>()<\/span>?<\/span>;<\/span>\r\n    let<\/span> post_type<\/span>:<\/span> String<\/span> =<\/span> row<\/span>.take_opt<\/span>(<\/span>21<\/span>)<\/span>.unwrap<\/span>()<\/span>?<\/span>;<\/span>\r\n    let<\/span> post_mime_type<\/span>:<\/span> String<\/span> =<\/span> row<\/span>.take_opt<\/span>(<\/span>22<\/span>)<\/span>.unwrap<\/span>()<\/span>?<\/span>;<\/span>\r\n\r\n    Ok<\/span>(<\/span>WP_Post<\/span> {<\/span>\r\n        ID<\/span>:<\/span> id<\/span>,<\/span>\r\n        post_author<\/span>,<\/span>\r\n        post_date<\/span>,<\/span>\r\n...<\/span>\r\n        menu_order<\/span>,<\/span>\r\n        post_type<\/span>,<\/span>\r\n        post_mime_type<\/span>,<\/span>\r\n        comment_count<\/span>,<\/span>\r\n    })<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
SQL\u30af\u30a8\u30ea\u306e\u5024\u306e\u9806\u756a\u3092\u9593\u9055\u3048\u306a\u3051\u308c\u3070\u3046\u307e\u304f\u3044\u304d\u307e\u3059\u304c\u3001\u3053\u306e\u89e3\u6c7a\u306b\u81f3\u308b\u307e\u3067\u82e6\u52b4\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n
mysql_common::ToValue\u306eTrait\u3092\u4f7f\u3048\u3070\u697d\u306b\u5024\u3092\u30d0\u30a4\u30ca\u30ea\u30fc\u306b\u5909\u63db\u3067\u304d\u308b<\/h2>\n
mysql_common\u3068\u3044\u3046\u30af\u30ec\u30fc\u30c8\u306b\u306fMySQL\u306ePrepared Statement\u30af\u30a8\u30ea\u30fc\u3067\u4f7f\u3048\u308b\u3088\u3046\u306b\u5024\u3092\u5909\u63db\u3059\u308bValue\u3068\u3044\u3046Enum\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u304c\u3068\u3066\u3082\u8208\u5473\u6df1\u3044\u4f5c\u308a\u3067\u3059\u3002<\/p>\n
\/\/\/ Client side representation of a value of MySql column.<\/span>\r\n\/\/\/<\/span>\r\n\/\/\/ The `Value` is also used as a parameter to a prepared statement.<\/span>\r\n#[derive(Clone,<\/span> PartialEq,<\/span> PartialOrd)]<\/span>\r\npub<\/span> enum<\/span> Value<\/span> {<\/span>\r\n    NULL<\/span>,<\/span>\r\n    Bytes<\/span>(<\/span>Vec<\/span><<\/span>u8<\/span>><\/span>),<\/span>\r\n    Int<\/span>(<\/span>i64<\/span>),<\/span>\r\n    UInt<\/span>(<\/span>u64<\/span>),<\/span>\r\n    Float<\/span>(<\/span>f32<\/span>),<\/span>\r\n    Double<\/span>(<\/span>f64<\/span>),<\/span>\r\n    \/\/\/ year, month, day, hour, minutes, seconds, micro seconds<\/span>\r\n    Date<\/span>(<\/span>u16<\/span>,<\/span> u8<\/span>,<\/span> u8<\/span>,<\/span> u8<\/span>,<\/span> u8<\/span>,<\/span> u8<\/span>,<\/span> u32<\/span>),<\/span>\r\n    \/\/\/ is negative, days, hours, minutes, seconds, micro seconds<\/span>\r\n    Time<\/span>(<\/span>bool<\/span>,<\/span> u32<\/span>,<\/span> u8<\/span>,<\/span> u8<\/span>,<\/span> u8<\/span>,<\/span> u32<\/span>),<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5f15\u7528: mysql_common – https:\/\/docs.rs\/mysql_common\/latest\/mysql_common\/<\/p>\n
\u3061\u306a\u307f\u306b\u3001\u6587\u5b57\u5217\u306fBytes\u306b\u306a\u308a\u307e\u3059\u3002Rust\u306eString\u306e\u8003\u3048\u65b9\u3068\u4f3c\u3066\u3044\u3066\u9762\u767d\u3044\u3068\u601d\u3044\u307e\u3057\u305f\u3002\u5143\u3092\u8a00\u3048\u3070UTF\uff18\u306e\u6587\u5b57\u5217\u3068\u306f\u305d\u3046\u3044\u3046\u3082\u306e\u306a\u306e\u3067\u3001JavaScript\u958b\u767a\u306e\u81ea\u5206\u3067\u306f\u6587\u5b57\u5217\u306b\u5341\u5206\u306b\u656c\u610f\u3092\u6255\u3063\u3066\u3044\u306a\u304b\u3063\u305f\u3068\u53cd\u7701\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u4e0a\u8a18\u306eEnum\u306e\u4ed6\u306b\u3001ToValue\u3068\u3044\u3046Trait\u304c\u3042\u308a\u3001\u3053\u308c\u3092\u6e80\u305f\u305b\u3070\u3001Value\u306e\u30d0\u30a4\u30ca\u30ea\u30fc\u306b\u5909\u63db\u3057\u3066\u304f\u308c\u308b\u306e\u3067\u3059\uff01<\/p>\n
pub<\/span> struct<\/span> DateQuery<\/span> {<\/span>\r\n    pub<\/span> year<\/span>:<\/span> Option<\/span><<\/span>u16<\/span>><\/span>,<\/span>\r\n    pub<\/span> month<\/span>:<\/span> Option<\/span><<\/span>u8<\/span>><\/span>,<\/span>\r\n    pub<\/span> day<\/span>:<\/span> Option<\/span><<\/span>u8<\/span>><\/span>,<\/span>    \/\/Day of the month (from 1 to 31).<\/span>\r\n    pub<\/span> hour<\/span>:<\/span> Option<\/span><<\/span>u8<\/span>><\/span>,<\/span>   \/\/ Hour (from 0 to 23).<\/span>\r\n    pub<\/span> minute<\/span>:<\/span> Option<\/span><<\/span>u8<\/span>><\/span>,<\/span> \/\/ Minute (from 0 to 59).<\/span>\r\n    pub<\/span> second<\/span>:<\/span> Option<\/span><<\/span>u8<\/span>><\/span>,<\/span>\r\n    pub<\/span> after<\/span>:<\/span> Option<\/span><<\/span>DateQueryAfterBefore<\/span>><\/span>,<\/span>\r\n    pub<\/span> before<\/span>:<\/span> Option<\/span><<\/span>DateQueryAfterBefore<\/span>><\/span>,<\/span>\r\n    pub<\/span> inclusive<\/span>:<\/span> bool<\/span>,<\/span>\r\n    pub<\/span> column<\/span>:<\/span> DateColumn<\/span>,<\/span>\r\n    pub<\/span> relation<\/span>:<\/span> SqlConditionOperator<\/span>,<\/span>\r\n}<\/span>\r\n\r\nimpl<\/span> ToValue<\/span> for<\/span> DateQuery<\/span> {<\/span>\r\n    fn<\/span> to_value<\/span>(<\/span>&<\/span>self<\/span>)<\/span> -><\/span> mysql_common<\/span>::<\/span>Value<\/span> {<\/span>\r\n        mysql_common<\/span>::<\/span>Value<\/span>::<\/span>Date<\/span>(<\/span>\r\n            self<\/span>.year<\/span>.unwrap_or<\/span>(<\/span>2023<\/span>),<\/span>\r\n            self<\/span>.month<\/span>.unwrap_or<\/span>(<\/span>1<\/span>),<\/span>\r\n            self<\/span>.day<\/span>.unwrap_or<\/span>(<\/span>1<\/span>),<\/span>\r\n            self<\/span>.hour<\/span>.unwrap_or<\/span>(<\/span>0<\/span>),<\/span>\r\n            self<\/span>.minute<\/span>.unwrap_or<\/span>(<\/span>0<\/span>),<\/span>\r\n            self<\/span>.second<\/span>.unwrap_or<\/span>(<\/span>0<\/span>),<\/span>\r\n            0u32<\/span>,<\/span>\r\n        )<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4e0a\u8a18\u306e\u3088\u3046\u306b\u3001\u81ea\u5206\u306e\u5834\u5408\u306f\u3001after\u7b49\u306f\u30af\u30a8\u30ea\u306b\u7121\u95a2\u4fc2\uff08\u5225\u306e\u3068\u3053\u308d\u3067\u4f7f\u3046\uff09\u306e\u3067\u3001ToValue\u3067\u6642\u523b\u306b\u95a2\u4fc2\u3059\u308b\u5024\u3060\u3051\u3092\u3068\u3063\u3066\u304a\u304f\u3088\u3046\u306b\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n
let<\/span> date_query<\/span> =<\/span> DateQuery<\/span>::<\/span>new<\/span>();<\/span>\r\ndate_query<\/span>.to_value<\/span>()<\/span> \/\/ mysql\u304c\u4f7f\u3048\u308bValue\u578b\u306b\u5909\u63db\u3055\u308c\u307e\u3059\uff01<\/span>\r\n<\/code><\/pre>\n
\u3068\u3066\u3082\u9762\u767d\u304b\u3063\u305f\u306e\u3067\u3059\u3002<\/p>\n
\u307e\u3068\u3081<\/h1>\n
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