Avoid hardcode of field list in EdgeDB query

Cargo.toml

@@ -28,6 +28,7 @@ edgedb-derive = "0.5.1"
 edgedb-errors = { version = "0.4.1", features = ["miette"] }
 edgedb-protocol = { version = "0.6.0", features = ["all-types"] }
 edgedb-tokio = { version = "0.5.0", features = ["serde_json", "miette-errors"] }
+field_names = "0.2.0"
 fluent-bundle = "0.15.2"
 fluent-templates = "0.8.0"
 fred = { version = "6.3.0", features = ["serde-json", "partial-tracing"] }

src/models/blogs.rs

@@ -9,10 +9,12 @@ use serde_json::Value as JValue;
 use strum_macros::{Display, EnumString, IntoStaticStr};
 use uuid::Uuid;
 use atom_syndication::{Entry as AtomEntry, EntryBuilder, LinkBuilder, Category as AtomCategory, CategoryBuilder, Text, Person};
+use field_names::FieldNames;
 
 use crate::types::conversions::{
     serialize_edge_datetime, serialize_optional_edge_datetime,
 };
+use crate::types::EdgeSelectable;
 use super::users::MiniUser;
 use super::feeds::{JsonAuthor, JsonItem};
 use crate::utils::html::strip_tags;
@@ -173,13 +175,20 @@ impl From<MediumBlogPost> for JsonItem {
     }
 }
 
-#[derive(Debug, Default, Clone, Serialize, Deserialize, Queryable)]
+#[derive(Debug, Default, Clone, Serialize, Deserialize, Queryable, FieldNames)]
 pub struct BlogCategory {
     pub id: Uuid,
     pub title: String,
     pub slug: String,
 }
 
+impl EdgeSelectable for BlogCategory {
+    fn fields_as_shape() -> String {
+        let fields = Self::FIELDS.join(", ");
+        format!("{{ {fields} }}")
+    }
+}
+
 impl From<BlogCategory> for AtomCategory {
     fn from(value: BlogCategory) -> Self {
         let BlogCategory { title, slug, .. } = value;
@@ -246,7 +255,7 @@ impl Default for DetailedBlogPost {
 }
 
 // Struct to represent a BlogPost in the database, with just a few fields enough to build links.
-#[derive(Debug, Serialize, Queryable)]
+#[derive(Debug, Clone, Serialize, Queryable, FieldNames)]
 pub struct MiniBlogPost {
     pub id: Uuid,
     pub title: String,
@@ -256,3 +265,10 @@ pub struct MiniBlogPost {
     #[serde(serialize_with = "serialize_optional_edge_datetime")]
     pub updated_at: Option<EDatetime>,
 }
+
+impl EdgeSelectable for MiniBlogPost {
+    fn fields_as_shape() -> String {
+        let fields = Self::FIELDS.join(", ");
+        format!("{{ {fields} }}")
+    }
+}