add missing form() with default value

jooby/src/main/java/io/jooby/Context.java

@@ -817,6 +817,19 @@ default Locale locale() {
    */
   Value form(@NonNull String name);
 
+  /**
+   * Get a form field that matches the given name.
+   *
+   * <p>File upload retrieval is available using {@link Context#file(String)}.
+   *
+   * <p>Only for <code>multipart/form-data</code> request.
+   *
+   * @param name Field name.
+   * @param defaultValue Default value.
+   * @return Multipart value.
+   */
+  Value form(@NonNull String name, @NonNull String defaultValue);
+
   /**
    * Convert form data to the given type.
    *

jooby/src/main/java/io/jooby/DefaultContext.java

@@ -452,6 +452,11 @@ default Value form(@NonNull String name) {
     return form().get(name);
   }
 
+  @Override
+  default Value form(@NonNull String name, @NonNull String defaultValue) {
+    return form().getOrDefault(name, defaultValue);
+  }
+
   @Override
   default <T> T form(@NonNull Class<T> type) {
     return form().to(type);

jooby/src/main/java/io/jooby/ForwardingContext.java

@@ -1001,6 +1001,11 @@ public Value form(@NonNull String name) {
     return ctx.form(name);
   }
 
+  @Override
+  public Value form(@NonNull String name, @NonNull String defaultValue) {
+    return ctx.form(name, defaultValue);
+  }
+
   @Override
   public <T> T form(@NonNull Class<T> type) {
     return ctx.form(type);

modules/jooby-apt/src/test/java/tests/i3761/C3761.java

@@ -5,6 +5,7 @@
  */
 package tests.i3761;
 
+import io.jooby.annotation.FormParam;
 import io.jooby.annotation.GET;
 import io.jooby.annotation.Path;
 import io.jooby.annotation.QueryParam;
@@ -31,4 +32,9 @@ public String emptySet(@QueryParam("") String emptySet) {
   public String string(@QueryParam("Hello") String stringVal) {
     return stringVal;
   }
+
+  @GET("/boolVal")
+  public boolean bool(@FormParam("false") boolean boolVal) {
+    return boolVal;
+  }
 }

modules/jooby-apt/src/test/java/tests/i3761/C3761Jakarta.java

@@ -9,6 +9,7 @@
 import io.jooby.annotation.Path;
 import jakarta.ws.rs.DefaultValue;
 import jakarta.ws.rs.QueryParam;
+import jakarta.ws.rs.FormParam;
 
 @Path("/3761")
 public class C3761Jakarta {
@@ -32,4 +33,9 @@ public String emptySet(@QueryParam("emptySet") @DefaultValue("") String emptySet
   public String string(@QueryParam("stringVal") @DefaultValue("Hello") String stringVal) {
     return stringVal;
   }
+
+  @GET("/boolVal")
+  public boolean bool(@FormParam("boolVal") @DefaultValue("false") boolean boolVal) {
+    return boolVal;
+  }
 }

modules/jooby-apt/src/test/java/tests/i3761/Issue3761.java

@@ -30,5 +30,7 @@ private static void assertSourceCodeRespectDefaultValues(String source) {
         source.contains("return c.emptySet(ctx.query(\"emptySet\", \"\").value());"));
     assertTrue(
         source.contains("return c.string(ctx.query(\"stringVal\", \"Hello\").value());"));
+    assertTrue(
+        source.contains("return c.bool(ctx.form(\"boolVal\", \"false\").booleanValue());"));
   }
 }