Template context (IR) · Docs — DomainCraft

Bridge templates receive a RenderContext:

• .Project (IRProject) — name, description, database, auth, apiStyle, platform, enums, entities, cache, cors, deploy. Methods: .HasAuth(), .Addons / .HasAddon("dapr"), .Infrastructure (.Queue/.Cache/.Secrets/.Storage), .AllFilterOperators().
• .Entity (IREntity) — name, namePlural, fields, relationsOut, relationsIn, indexes, seed, permissions, features. Methods: .HasFeature("audit"), .HasAudit(), .HasAuditLog(), .HasSoftDelete(), .HasOptimisticLock(), .NonRelationFields(), .RelationFields(), .HasEventSourced(), .HasCacheable(), .OldName.
• .Bridge (BridgeConfig) — bridge configuration (name, description, outputDir, helpers, delimiters, extends, …).
• .Packages (map[string]string) — resolved package versions from the registry.

RenderContext convenience methods

Name(), NamePlural(), HasAudit(), HasAuditLog(), HasSoftDelete(), HasOptimisticLock(), Permissions(), Seed(), PrimaryKey(), HasFeature(name), SearchableFields(), SortableFields(), FilterableFields().

Queryability & filtering

• IREntity.QuerySchema() — the single entry point bundling the whole list-query surface into one { Searchable, Sortable, Filterable } object; search, sort and filter are peers of the same query (not a filter-first API).
• IREntity.SearchableFields() — scalar text columns eligible for free-text search.
• IREntity.SortableFields() — scalar columns a list endpoint may order by (field / -field).
• IREntity.FilterableFields() — scalar columns filterable by value; each field exposes IRField.FilterOperators() (the operators its type supports).
• IREntity.FilterablePaths() — the full filter path schema for a bridge’s runtime validator: scalar fields, one-hop to-one relation paths (category.name) and JSON roots (meta, open-ended keys), each with its allowed operators. The core emits the schema; the bridge parses and validates the path:op:value strings at runtime (see the Query language reference for the grammar).
• IRProject.AllFilterOperators() — the fixed filter-operator vocabulary (eq | ne | gt | gte | lt | lte | in | contains | startsWith | endsWith) in deterministic order; iterate it to generate a bridge’s runtime operator enum (member names via pascalcase) instead of hand-writing a parallel list.
• IREntity.EagerLoadRelations() — the relations to eager-load on a full-graph fetch; each relation exposes IRRelation.EagerLoadNavigation() for the property to Include (collection for [many], navigation for single FKs; casing is applied by the bridge). List endpoints accept ?include= (comma-separated relation field names) to restrict which [many] collections are loaded.
• IREntity.CursorField() — the keyset-pagination cursor: the primary key when it is a monotonic integer (int/bigint), nil otherwise. A bridge renders ?cursor= keyset paging only for entities where this is non-nil (others fall back to offset).

IRField methods

.IsArray(), .ArrayElementType(), .IsEnum(), .EnumTypeName(), .IsFeatureField(), .IsSensitive(), .IsPatchable(), .IsUuid(), .IsText(), .IsString(), .IsInteger(), .IsBigInt(), .IsFloat(), .IsDecimal(), .IsNumeric(), .IsBoolean(), .IsDate(), .IsDateTime(), .IsJson(), .IsJsonB(), .HasValidation(name), .ValidationValue(name), .ValidationRules().

Key IRField fields: name, databaseType, navigationName, isPrimary, isNullable, isUnique, isHidden, isRelation, isMany, relationTarget, defaultValue, defaultIsFunc, validations.

IRRelation fields: fieldName, targetEntity, navigationName, inverseNavName, onDeleteBehavior, isNullable, isMany, relationType, pairFieldName, pairNavigationName.

IRAuthConfig: type, entity, roles, endpoints (HasLogin, HasRegister, HasMe, HasSetup — boolean fields; templates gate auth templates per endpoint with them).

Validation rules & errors

IRField.ValidationRules() returns normalized, ordered IRValidationRules:

• .Kind — semantic kind (required, email, url, ipv4, regex, min_length, max_length, min_value, max_value).
• .Code — stable wire code (REQUIRED, EMAIL, URL, IPV4, REGEX, MIN_LENGTH, MAX_LENGTH, MIN_VALUE, MAX_VALUE).
• .Value — the rule parameter ("" for flag rules).
• .Exclusive — true when a numeric bound is strict (gt/lt).
• .Message — stable default message, value already interpolated (e.g. must be greater than or equal to 0.01).

Bridges map each rule to their framework’s validator: DataAnnotations uses .Message for ErrorMessage; FluentValidation/class-validator use .Code (.WithErrorCode) + .Message.

Non-validation operation errors use a stable {code, message} envelope (INVALID_FILTER, INVALID_PATCH, CONCURRENCY_CONFLICT); validation failures use the framework’s native validation response.

Core template functions

• String transforms: pluralize, pascalcase, camelcase, lowercase, uppercase, humanize.
• jsonValue, fkName, seedKind.
• IR helpers not covered above: IREntity.PrimaryKey(), IREntity.TableName(), IREntity.FieldByName(name), IREntity.AllIndexes(), IREntity.Endpoints(), IREntity.PermissionPlan(op), IREntity.SearchableFields(), IREntity.SortableFields(), IREntity.FilterableFields(), IRRelation.EagerLoadNavigation(), IRRelation.ForeignKeyColumnName(), IRField.ColumnName(), IRField.FilterOperators(), IRProject.AuthEntity(), IRProject.AuthEndpoints(), IRProject.EnumValues(name) (→ []IREnumValue{ Name, WireValue, Ordinal }), IRIndex.DatabaseName(), IREndpoint.AuthPolicy(), IRPermissions.HasOwnerToken(), IRPermissions.IsPublic(op), SeedValue.Kind(), SeedValue.ElementType().
• The templatefuncs set (internal/templatefuncs, stdlib-backed): add, any, append, atoi, base, contains, default, dict, hasPrefix, join, kindIs, kindOf, list, lower, now, set, splitList, title, toString, upper, plus the textutil-backed pluralize, pascalcase, camelcase, lowercase, uppercase, humanize, fkName, snakecase, kebabcase.

Column/table/enum-wire/index names are core-owned. Print IREntity.TableName(), IRField.DatabaseColumnName / IRField.ColumnName(), IRRelation.ForeignKeyColumnName(), IREnumValue.WireValue and IRIndex.DatabaseName() — never re-derive them with the template snakecase, which diverges from textutil.ToDatabaseColumnName on acronyms (e.g. IPv4Address).

Bridge functions (from type_mappings.yaml)

• languageType — IR database type → language type (uuid → Guid).
• isValueType — is the mapped type a value type (needs ? when nullable).
• deleteBehaviorName — delete behavior → language enum (set_null → SetNull).
• inputType — IR database type → UI input component (admin bridges).
• literalValue — scalar value/default → literal or parse expression (Guid.Parse(...), 99.99m).
• literalDefault — value-less default (Guid.NewGuid(), 0L, new List<T>()).
• literalMember — enum default → compile-time member (OrderStatus.Draft).
• arrayLiteralOpen / arrayLiteralClose — array literal delimiters.
• columnSize — declared default column size per IR type (column_sizes: in type_mappings.yaml, e.g. appwrite string → 255, uuid → 36).