Add prefix

.changepacks/changepack_log_S-V1v7UFYiEf3XeW_9d1F.json

@@ -0,0 +1 @@
+{"changes":{"crates/vespertide-config/Cargo.toml":"Patch","crates/vespertide-query/Cargo.toml":"Patch","crates/vespertide-naming/Cargo.toml":"Patch","crates/vespertide-cli/Cargo.toml":"Patch","crates/vespertide/Cargo.toml":"Patch","crates/vespertide-exporter/Cargo.toml":"Patch","crates/vespertide-macro/Cargo.toml":"Patch","crates/vespertide-core/Cargo.toml":"Patch","crates/vespertide-loader/Cargo.toml":"Patch","crates/vespertide-planner/Cargo.toml":"Patch"},"note":"Add prefix option","date":"2026-01-21T09:42:55.945270800Z"}

.github/workflows/CI.yml

@@ -49,7 +49,7 @@ jobs:
           echo 'merge_derives = true' >> .rustfmt.toml
           echo 'use_small_heuristics = "Default"' >> .rustfmt.toml
           cargo fmt
-          cargo tarpaulin --out Lcov Stdout --workspace --exclude app
+          cargo tarpaulin --engine llvm --out Lcov Stdout --workspace --exclude app
       - name: Upload to codecov.io
         uses: codecov/codecov-action@v5
         with:

crates/vespertide-cli/src/commands/log.rs

@@ -15,18 +15,22 @@ pub fn cmd_log(backend: DatabaseBackend) -> Result<()> {
         return Ok(());
     }
 
+    // Apply prefix to all migration plans
+    let prefix = config.prefix();
+    let prefixed_plans: Vec<_> = plans.into_iter().map(|p| p.with_prefix(prefix)).collect();
+
     println!(
         "{} {} {}",
         "Migrations".bright_cyan().bold(),
         "(oldest -> newest):".bright_white(),
-        plans.len().to_string().bright_yellow().bold()
+        prefixed_plans.len().to_string().bright_yellow().bold()
     );
     println!();
 
     // Build baseline schema incrementally as we iterate through migrations
     let mut baseline_schema = Vec::new();
 
-    for plan in &plans {
+    for plan in &prefixed_plans {
         println!(
             "{} {}",
             "Version:".bright_cyan().bold(),

crates/vespertide-cli/src/commands/sql.rs

@@ -10,15 +10,24 @@ pub fn cmd_sql(backend: DatabaseBackend) -> Result<()> {
     let current_models = load_models(&config)?;
     let applied_plans = load_migrations(&config)?;
 
-    // Reconstruct the baseline schema from applied migrations
-    let baseline_schema = schema_from_plans(&applied_plans)
+    // Reconstruct the baseline schema from applied migrations (with prefix applied)
+    let prefix = config.prefix();
+    let prefixed_plans: Vec<_> = applied_plans
+        .into_iter()
+        .map(|p| p.with_prefix(prefix))
+        .collect();
+    let baseline_schema = schema_from_plans(&prefixed_plans)
         .map_err(|e| anyhow::anyhow!("failed to reconstruct schema: {}", e))?;
 
     // Plan next migration using the pre-computed baseline
-    let plan = plan_next_migration_with_baseline(&current_models, &applied_plans, &baseline_schema)
-        .map_err(|e| anyhow::anyhow!("planning error: {}", e))?;
+    let plan =
+        plan_next_migration_with_baseline(&current_models, &prefixed_plans, &baseline_schema)
+            .map_err(|e| anyhow::anyhow!("planning error: {}", e))?;
+
+    // Apply prefix to the new plan for SQL generation
+    let prefixed_plan = plan.with_prefix(prefix);
 
-    emit_sql(&plan, backend, &baseline_schema)
+    emit_sql(&prefixed_plan, backend, &baseline_schema)
 }
 
 fn emit_sql(

crates/vespertide-config/src/config.rs

@@ -83,6 +83,10 @@ pub struct VespertideConfig {
     /// SeaORM-specific export configuration.
     #[serde(default)]
     pub seaorm: SeaOrmConfig,
+    /// Prefix to add to all table names (including migration version table).
+    /// Default: "" (no prefix)
+    #[serde(default)]
+    pub prefix: String,
 }
 
 fn default_model_export_dir() -> PathBuf {
@@ -101,6 +105,7 @@ impl Default for VespertideConfig {
             migration_filename_pattern: default_migration_filename_pattern(),
             model_export_dir: default_model_export_dir(),
             seaorm: SeaOrmConfig::default(),
+            prefix: String::new(),
         }
     }
 }
@@ -150,6 +155,20 @@ impl VespertideConfig {
     pub fn seaorm(&self) -> &SeaOrmConfig {
         &self.seaorm
     }
+
+    /// Prefix to add to all table names.
+    pub fn prefix(&self) -> &str {
+        &self.prefix
+    }
+
+    /// Apply prefix to a table name.
+    pub fn apply_prefix(&self, table_name: &str) -> String {
+        if self.prefix.is_empty() {
+            table_name.to_string()
+        } else {
+            format!("{}{}", self.prefix, table_name)
+        }
+    }
 }
 
 #[cfg(test)]
@@ -173,5 +192,26 @@ mod tests {
             vec!["vespera::Schema".to_string()]
         );
         assert!(config.seaorm.extra_model_derives.is_empty());
+        assert_eq!(config.prefix, "");
+    }
+
+    #[test]
+    fn test_vespertide_config_prefix() {
+        let config = VespertideConfig {
+            prefix: "myapp_".to_string(),
+            ..Default::default()
+        };
+
+        assert_eq!(config.prefix(), "myapp_");
+        assert_eq!(config.apply_prefix("users"), "myapp_users");
+        assert_eq!(config.apply_prefix("posts"), "myapp_posts");
+    }
+
+    #[test]
+    fn test_vespertide_config_empty_prefix() {
+        let config = VespertideConfig::default();
+
+        assert_eq!(config.prefix(), "");
+        assert_eq!(config.apply_prefix("users"), "users");
     }
 }