modql/filter/list_options/
mod.rs

1mod order_by;
2
3pub use order_by::*;
4use serde::Deserialize;
5
6#[derive(Default, Debug, Clone, Deserialize)]
7pub struct ListOptions {
8	pub limit: Option<i64>,
9	pub offset: Option<i64>,
10	pub order_bys: Option<OrderBys>,
11}
12
13// region:    --- Constructors
14
15impl ListOptions {
16	pub fn from_limit(limit: i64) -> Self {
17		Self {
18			limit: Some(limit),
19			..Default::default()
20		}
21	}
22
23	pub fn from_offset_limit(offset: i64, limit: i64) -> Self {
24		Self {
25			limit: Some(limit),
26			offset: Some(offset),
27			..Default::default()
28		}
29	}
30
31	pub fn from_order_bys(order_bys: impl Into<OrderBys>) -> Self {
32		Self {
33			order_bys: Some(order_bys.into()),
34			..Default::default()
35		}
36	}
37}
38
39// endregion: --- Constructors
40
41// region:    --- Froms
42
43impl From<OrderBys> for ListOptions {
44	fn from(val: OrderBys) -> Self {
45		Self {
46			order_bys: Some(val),
47			..Default::default()
48		}
49	}
50}
51
52impl From<OrderBys> for Option<ListOptions> {
53	fn from(val: OrderBys) -> Self {
54		Some(ListOptions {
55			order_bys: Some(val),
56			..Default::default()
57		})
58	}
59}
60
61impl From<OrderBy> for ListOptions {
62	fn from(val: OrderBy) -> Self {
63		Self {
64			order_bys: Some(OrderBys::from(val)),
65			..Default::default()
66		}
67	}
68}
69
70impl From<OrderBy> for Option<ListOptions> {
71	fn from(val: OrderBy) -> Self {
72		Some(ListOptions {
73			order_bys: Some(OrderBys::from(val)),
74			..Default::default()
75		})
76	}
77}
78
79// endregion: --- Froms
80
81// region:    --- with-sea-query
82#[cfg(feature = "with-sea-query")]
83mod with_sea_query {
84	use super::*;
85	use sea_query::SelectStatement;
86
87	impl ListOptions {
88		pub fn apply_to_sea_query(self, select_query: &mut SelectStatement) {
89			fn as_positive_u64(num: i64) -> u64 {
90				if num < 0 {
91					0
92				} else {
93					num as u64
94				}
95			}
96			if let Some(limit) = self.limit {
97				select_query.limit(as_positive_u64(limit)); // Note: Negative == 0
98			}
99
100			if let Some(offset) = self.offset {
101				select_query.offset(as_positive_u64(offset)); // Note: Negative == 0
102			}
103
104			if let Some(order_bys) = self.order_bys {
105				for (col, order) in order_bys.into_sea_col_order_iter() {
106					select_query.order_by(col, order);
107				}
108			}
109		}
110	}
111}
112// endregion: --- with-sea-query
modql/filter/list_options/mod.rs

modql/filter/list_options/
mod.rs
