1 files changed, 69 insertions, 0 deletions
diff --git a/server/lemmy_db/src/category.rs b/server/lemmy_db/src/category.rs
new file mode 100644
index 00000000..ec2efc7b
--- /dev/null
+++ b/server/lemmy_db/src/category.rs
@@ -0,0 +1,69 @@
+use crate::{
+  schema::{category, category::dsl::*},
+  Crud,
+};
+use diesel::{dsl::*, result::Error, *};
+use serde::{Deserialize, Serialize};
+
+#[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
+#[table_name = "category"]
+pub struct Category {
+  pub id: i32,
+  pub name: String,
+}
+
+#[derive(Insertable, AsChangeset, Clone, Serialize, Deserialize)]
+#[table_name = "category"]
+pub struct CategoryForm {
+  pub name: String,
+}
+
+impl Crud<CategoryForm> for Category {
+  fn read(conn: &PgConnection, category_id: i32) -> Result<Self, Error> {
+    category.find(category_id).first::<Self>(conn)
+  }
+
+  fn delete(conn: &PgConnection, category_id: i32) -> Result<usize, Error> {
+    diesel::delete(category.find(category_id)).execute(conn)
+  }
+
+  fn create(conn: &PgConnection, new_category: &CategoryForm) -> Result<Self, Error> {
+    insert_into(category)
+      .values(new_category)
+      .get_result::<Self>(conn)
+  }
+
+  fn update(
+    conn: &PgConnection,
+    category_id: i32,
+    new_category: &CategoryForm,
+  ) -> Result<Self, Error> {
+    diesel::update(category.find(category_id))
+      .set(new_category)
+      .get_result::<Self>(conn)
+  }
+}
+
+impl Category {
+  pub fn list_all(conn: &PgConnection) -> Result<Vec<Self>, Error> {
+    category.load::<Self>(conn)
+  }
+}
+
+#[cfg(test)]
+mod tests {
+  use crate::{category::Category, tests::establish_unpooled_connection};
+
+  #[test]
+  fn test_crud() {
+    let conn = establish_unpooled_connection();
+
+    let categories = Category::list_all(&conn).unwrap();
+    let expected_first_category = Category {
+      id: 1,
+      name: "Discussion".into(),
+    };
+
+    assert_eq!(expected_first_category, categories[0]);
+  }
+}