codegen: make modelSQLFields const use camel case instead of lowercase

.gitea/workflows/CI.yaml

@@ -1,6 +1,6 @@
 name: CI
 
-on: [push]
+on: [push, workflow_dispatch]
 
 jobs:
   # These steps build the `gas` docker image.

pkg/codegen/modelgenerate/generate_model.go

@@ -23,7 +23,7 @@ var (
 )
 
 func SQLFieldsConstIdent(tbl schema.Table) *ast.Ident {
-	return ast.NewIdent(strings.ToLower(tbl.GoTypeName) + "SQLFields")
+	return ast.NewIdent(strings.ToLower(tbl.GoTypeName[:1]) + tbl.GoTypeName[1:] + "SQLFields")
 }
 
 // GoTypeForColumn returns a type expression for this column.
@@ -161,9 +161,21 @@ func buildFKCheckLambda(tbl schema.Table) (*ast.AssignStmt, bool) {
 							structFieldName := col.GoFieldName()
 							structField := &ast.SelectorExpr{X: ast.NewIdent(tbl.VarName), Sel: ast.NewIdent(structFieldName)}
 
+							ret = append(ret, func() ast.Stmt {
+								// Wrap nullable FKs in "if a.val != 0 { ... }"
+								wrap := func(input ast.Stmt) ast.Stmt {
+									if col.IsNullableForeignKey() {
+										return &ast.IfStmt{
+											Cond: &ast.BinaryExpr{X: structField, Op: token.NEQ, Y: &ast.BasicLit{Kind: token.INT, Value: "0"}},
+											Body: &ast.BlockStmt{List: []ast.Stmt{input}},
+										}
+									} else {
+										return input
+									}
+								}
 								if col.IsNonCodeTableForeignKey() {
 									// Real foreign key; look up referent by ID to see if it exists
-								ret = append(ret, &ast.IfStmt{
+									return wrap(&ast.IfStmt{
 										Init: &ast.AssignStmt{
 											Lhs: []ast.Expr{ast.NewIdent("_"), ast.NewIdent("err")},
 											Tok: token.DEFINE,
@@ -197,10 +209,10 @@ func buildFKCheckLambda(tbl schema.Table) (*ast.AssignStmt, bool) {
 									})
 								} else {
 									// Code table value.  Query the table to see if it exists
-								ret = append(ret, &ast.IfStmt{
+									return wrap(&ast.IfStmt{
 										Init: &ast.AssignStmt{
 											Lhs: []ast.Expr{ast.NewIdent("err")},
-										Tok: token.ASSIGN,
+											Tok: token.DEFINE,
 											Rhs: []ast.Expr{
 												&ast.CallExpr{
 													Fun: &ast.SelectorExpr{X: dbDB, Sel: ast.NewIdent("Get")},
@@ -234,6 +246,7 @@ func buildFKCheckLambda(tbl schema.Table) (*ast.AssignStmt, bool) {
 										},
 									})
 								}
+							}())
 						}
 						// final return nil
 						ret = append(ret, &ast.ReturnStmt{Results: []ast.Expr{ast.NewIdent("nil")}})
@@ -386,6 +399,24 @@ func GenerateSaveItemFunc(tbl schema.Table) *ast.FuncDecl {
 			}
 
 			if tbl.IsWithoutRowid {
+				if hasCreatedAt {
+					// Auto-timestamps: created_at.  Don't overwrite existing timestamps (e.g., data import / migrations)
+					ret = append(ret, &ast.IfStmt{
+						Cond: &ast.CallExpr{Fun: &ast.SelectorExpr{
+							X:   &ast.SelectorExpr{X: ast.NewIdent(tbl.VarName), Sel: ast.NewIdent("CreatedAt")},
+							Sel: ast.NewIdent("IsZero"),
+						}},
+						Body: &ast.BlockStmt{
+							List: []ast.Stmt{
+								&ast.AssignStmt{
+									Lhs: []ast.Expr{&ast.SelectorExpr{X: ast.NewIdent(tbl.VarName), Sel: ast.NewIdent("CreatedAt")}},
+									Tok: token.ASSIGN,
+									Rhs: []ast.Expr{&ast.CallExpr{Fun: ast.NewIdent("TimestampNow"), Args: []ast.Expr{}}},
+								},
+							},
+						},
+					})
+				}
 				ret = append(ret, namedExecStmt(upsertStmt)...)
 				ret = append(ret, PanicIfRowsAffected(tbl))
 			} else {
@@ -403,10 +434,21 @@ func GenerateSaveItemFunc(tbl schema.Table) *ast.FuncDecl {
 								ret1 := []ast.Stmt{Comment("Do create")}
 								if hasCreatedAt {
 									// Auto-timestamps: created_at
-									ret1 = append(ret1, &ast.AssignStmt{
+									ret1 = append(ret1, &ast.IfStmt{
+										// Don't overwrite existing timestamps.  This is useful for various reasons, e.g., data import / migrations
+										Cond: &ast.CallExpr{Fun: &ast.SelectorExpr{
+											X:   &ast.SelectorExpr{X: ast.NewIdent(tbl.VarName), Sel: ast.NewIdent("CreatedAt")},
+											Sel: ast.NewIdent("IsZero"),
+										}},
+										Body: &ast.BlockStmt{
+											List: []ast.Stmt{
+												&ast.AssignStmt{
 													Lhs: []ast.Expr{&ast.SelectorExpr{X: ast.NewIdent(tbl.VarName), Sel: ast.NewIdent("CreatedAt")}},
 													Tok: token.ASSIGN,
 													Rhs: []ast.Expr{&ast.CallExpr{Fun: ast.NewIdent("TimestampNow"), Args: []ast.Expr{}}},
+												},
+											},
+										},
 									})
 								}
 								return append(ret1, namedExecStmt(insertStmt)...)
@@ -477,7 +519,7 @@ func GenerateGetItemBy(tbl schema.Table, cols []schema.Column) *ast.FuncDecl {
 	for _, col := range cols {
 		funcParam := ast.NewIdent(col.LongGoVarName())
 		funcParams.List = append(funcParams.List, &ast.Field{Names: []*ast.Ident{funcParam}, Type: GoTypeForColumn(col)})
-		colNames = append(colNames, fmt.Sprintf("%s = :%s", col.Name, col.Name))
+		colNames = append(colNames, fmt.Sprintf("%s = ?", col.Name))
 		funcNameSuffix = append(funcNameSuffix, col.GoFieldName())
 		sqlParams = append(sqlParams, funcParam)
 	}
@@ -489,7 +531,7 @@ func GenerateGetItemBy(tbl schema.Table, cols []schema.Column) *ast.FuncDecl {
 			Y:  SQLFieldsConstIdent(tbl),
 		},
 		Op: token.ADD,
-		Y:  &ast.BasicLit{Kind: token.STRING, Value: fmt.Sprintf("`\n\t      from %s\n\t     where %s = ?\n\t`", tbl.TableName, strings.Join(colNames, " and "))},
+		Y:  &ast.BasicLit{Kind: token.STRING, Value: fmt.Sprintf("`\n\t      from %s\n\t     where %s\n\t`", tbl.TableName, strings.Join(colNames, " and "))},
 	}
 
 	return &ast.FuncDecl{
@@ -515,7 +557,8 @@ func GenerateGetItemBy(tbl schema.Table, cols []schema.Column) *ast.FuncDecl {
 				&ast.IfStmt{
 					Cond: &ast.CallExpr{
 						Fun:  &ast.SelectorExpr{X: ast.NewIdent("errors"), Sel: ast.NewIdent("Is")},
-						Args: []ast.Expr{ast.NewIdent("err"), &ast.SelectorExpr{X: ast.NewIdent("sql"), Sel: ast.NewIdent("ErrNoRows")}}},
+						Args: []ast.Expr{ast.NewIdent("err"), &ast.SelectorExpr{X: ast.NewIdent("sql"), Sel: ast.NewIdent("ErrNoRows")}},
+					},
 					Body: &ast.BlockStmt{List: []ast.Stmt{&ast.ReturnStmt{Results: []ast.Expr{&ast.CompositeLit{Type: ast.NewIdent(tbl.GoTypeName)}, ast.NewIdent("ErrNotInDB")}}}},
 				},
 				&ast.ReturnStmt{},

pkg/codegen/modelgenerate/generate_testfile.go

@@ -8,6 +8,7 @@ import (
 	"github.com/jinzhu/inflection"
 
 	pkgschema "git.offline-twitter.com/offline-labs/gas-stack/pkg/schema"
+	"git.offline-twitter.com/offline-labs/gas-stack/pkg/textutils"
 )
 
 // GenerateModelTestAST produces an AST for a starter test file for a given model.
@@ -15,9 +16,11 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 	packageName := "db"
 	testpackageName := packageName + "_test"
 
+	makeHelperName := ast.NewIdent("Make" + tbl.GoTypeName)
+
 	// func MakeItem() Item { return Item{} }
 	makeItemFunc := &ast.FuncDecl{
-		Name: ast.NewIdent("Make" + tbl.GoTypeName),
+		Name: makeHelperName,
 		Type: &ast.FuncType{
 			Params: &ast.FieldList{},
 			Results: &ast.FieldList{
@@ -57,15 +60,55 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 		},
 	}
 
-	testObj := ast.NewIdent("item")
-	testObj2 := ast.NewIdent("item2")
+	testObj := ast.NewIdent(textutils.CamelToPascal(tbl.GoTypeName))
+	testObj2 := ast.NewIdent(textutils.CamelToPascal(tbl.GoTypeName) + "2")
 	fieldName := ast.NewIdent("Description") // TODO
-	description1 := `"an item"`
-	description2 := `"a big item"`
+	description1 := "an item"
+	description2 := "a big item"
 	testDB := ast.NewIdent("TestDB")
 
 	hasCreatedAt, hasUpdatedAt := tbl.HasAutoTimestamps()
 
+	makeDeepEqual := func(obj1 *ast.Ident, obj2 *ast.Ident) *ast.IfStmt {
+		return &ast.IfStmt{
+			Init: &ast.AssignStmt{
+				Lhs: []ast.Expr{
+					&ast.Ident{Name: "diff"},
+				},
+				Tok: token.DEFINE,
+				Rhs: []ast.Expr{
+					&ast.CallExpr{
+						Fun: &ast.SelectorExpr{
+							X:   &ast.Ident{Name: "deep"},
+							Sel: &ast.Ident{Name: "Equal"},
+						},
+						Args: []ast.Expr{obj1, obj2},
+					},
+				},
+			},
+			Cond: &ast.BinaryExpr{
+				X:  &ast.Ident{Name: "diff"},
+				Op: token.NEQ,
+				Y:  &ast.Ident{Name: "nil"},
+			},
+			Body: &ast.BlockStmt{
+				List: []ast.Stmt{
+					&ast.ExprStmt{
+						X: &ast.CallExpr{
+							Fun: &ast.SelectorExpr{
+								X:   &ast.Ident{Name: "t"},
+								Sel: &ast.Ident{Name: "Error"},
+							},
+							Args: []ast.Expr{
+								&ast.Ident{Name: "diff"},
+							},
+						},
+					},
+				},
+			},
+		}
+	}
+
 	testFuncType := &ast.FuncType{
 		Params: &ast.FieldList{
 			List: []*ast.Field{{
@@ -75,6 +118,103 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 		},
 	}
 
+	// Generate FK Check test func first, because it also detects whether there are foreign keys
+	shouldIncludeTestFkCheck := false
+	testFkChecking := &ast.FuncDecl{
+		Name: ast.NewIdent("Test" + tbl.GoTypeName + "FkChecking"),
+		Type: testFuncType,
+		Body: &ast.BlockStmt{
+			List: func() (stmts []ast.Stmt) {
+				isFirst := true
+				for _, col := range tbl.Columns {
+					if !col.IsForeignKey {
+						continue
+					}
+					shouldIncludeTestFkCheck = true
+
+					// post := MakePost()
+					if !isFirst {
+						stmts = append(stmts, BlankLine())
+					}
+
+					stmts = append(stmts, []ast.Stmt{
+						// Comment header
+						Comment(fmt.Sprintf("Invalid %s", col.GoFieldName())),
+
+						// `Invalid
+						&ast.AssignStmt{
+							Lhs: []ast.Expr{ast.NewIdent(tbl.VarName)},
+							Tok: map[bool]token.Token{true: token.DEFINE, false: token.ASSIGN}[isFirst],
+							Rhs: []ast.Expr{
+								&ast.CallExpr{
+									Fun: ast.NewIdent("Make" + tbl.GoTypeName),
+								},
+							},
+						},
+
+						// `post.QuotedPostID = 94354538969386985`
+						&ast.AssignStmt{
+							Lhs: []ast.Expr{
+								&ast.SelectorExpr{
+									X:   ast.NewIdent(tbl.VarName),
+									Sel: ast.NewIdent(col.GoFieldName()),
+								},
+							},
+							Tok: token.ASSIGN,
+							Rhs: []ast.Expr{
+								&ast.BasicLit{
+									Kind:  token.INT,
+									Value: "94354538969386985",
+								},
+							},
+						},
+
+						// `err := db.SavePost(&post)`
+						&ast.AssignStmt{
+							Lhs: []ast.Expr{ast.NewIdent("err")},
+							Tok: map[bool]token.Token{true: token.DEFINE, false: token.ASSIGN}[isFirst],
+							Rhs: []ast.Expr{
+								&ast.CallExpr{
+									Fun: &ast.SelectorExpr{
+										X:   testDB,
+										Sel: ast.NewIdent("Save" + tbl.GoTypeName),
+									},
+									Args: []ast.Expr{
+										&ast.UnaryExpr{
+											Op: token.AND,
+											X:  ast.NewIdent(tbl.VarName),
+										},
+									},
+								},
+							},
+						},
+
+						// `assertForeignKeyError(t, err, "QuotedPostID", post.QuotedPostID)`
+						&ast.ExprStmt{
+							X: &ast.CallExpr{
+								Fun: ast.NewIdent("AssertForeignKeyError"),
+								Args: []ast.Expr{
+									ast.NewIdent("t"),
+									ast.NewIdent("err"),
+									&ast.BasicLit{
+										Kind:  token.STRING,
+										Value: fmt.Sprintf("%q", col.GoFieldName()),
+									},
+									&ast.SelectorExpr{
+										X:   ast.NewIdent(tbl.VarName),
+										Sel: ast.NewIdent(col.GoFieldName()),
+									},
+								},
+							},
+						},
+					}...)
+					isFirst = false
+				}
+				return stmts
+			}(),
+		},
+	}
+
 	testCreateUpdateDelete := &ast.FuncDecl{
 		Name: ast.NewIdent("TestCreateUpdateDelete" + tbl.GoTypeName),
 		Type: testFuncType,
@@ -94,13 +234,13 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 					&ast.AssignStmt{
 						Lhs: []ast.Expr{testObj},
 						Tok: token.DEFINE,
-						Rhs: []ast.Expr{&ast.CallExpr{Fun: ast.NewIdent("MakeItem"), Args: nil}},
+						Rhs: []ast.Expr{&ast.CallExpr{Fun: makeHelperName, Args: nil}},
 					},
 					// item.Description = "an item"
 					&ast.AssignStmt{
 						Lhs: []ast.Expr{
 							&ast.SelectorExpr{
-								X:   ast.NewIdent("item"),
+								X:   testObj,
 								Sel: ast.NewIdent("Description"),
 							},
 						},
@@ -113,11 +253,21 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 						},
 					},
 
-					// TestDB.SaveItem(&item)
-					&ast.ExprStmt{X: &ast.CallExpr{
+					// TestDB.SaveItem(&item), possibly with error check
+					&ast.ExprStmt{X: func() *ast.CallExpr {
+						mainExpr := &ast.CallExpr{
 							Fun:  &ast.SelectorExpr{X: testDB, Sel: ast.NewIdent("Save" + tbl.GoTypeName)},
 							Args: []ast.Expr{&ast.UnaryExpr{Op: token.AND, X: testObj}},
-					}},
+						}
+						if shouldIncludeTestFkCheck {
+							// Also a check for whether the Save function returns an error
+							return &ast.CallExpr{
+								Fun:  &ast.SelectorExpr{X: ast.NewIdent("require"), Sel: ast.NewIdent("NoError")},
+								Args: []ast.Expr{ast.NewIdent("t"), mainExpr},
+							}
+						}
+						return mainExpr
+					}()},
 
 					// require.NotZero(t, item.ID)
 					&ast.ExprStmt{X: &ast.CallExpr{
@@ -148,15 +298,8 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 						})},
 					},
 
-					// assert.Equal(t, item.Description, item2.Description)
-					&ast.ExprStmt{X: &ast.CallExpr{
-						Fun: &ast.SelectorExpr{X: ast.NewIdent("assert"), Sel: ast.NewIdent("Equal")},
-						Args: []ast.Expr{
-							ast.NewIdent("t"),
-							&ast.SelectorExpr{X: testObj, Sel: fieldName},
-							&ast.SelectorExpr{X: testObj2, Sel: fieldName},
-						},
-					}},
+					// if deep.Equal(...) {...}
+					makeDeepEqual(testObj, testObj2),
 				)
 
 				stmts = append(stmts,
@@ -167,7 +310,7 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 					&ast.AssignStmt{
 						Lhs: []ast.Expr{&ast.SelectorExpr{X: testObj, Sel: fieldName}},
 						Tok: token.ASSIGN,
-						Rhs: []ast.Expr{&ast.BasicLit{Kind: token.STRING, Value: description2}},
+						Rhs: []ast.Expr{&ast.BasicLit{Kind: token.STRING, Value: fmt.Sprintf("%q", description2)}},
 					},
 
 					// TestDB.SaveItem(&item)
@@ -186,15 +329,8 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 						})},
 					},
 
-					// assert.Equal(t, item.Description, item2.Description)
-					&ast.ExprStmt{X: &ast.CallExpr{
-						Fun: &ast.SelectorExpr{X: ast.NewIdent("assert"), Sel: ast.NewIdent("Equal")},
-						Args: []ast.Expr{
-							ast.NewIdent("t"),
-							&ast.SelectorExpr{X: testObj, Sel: fieldName},
-							&ast.SelectorExpr{X: testObj2, Sel: fieldName},
-						},
-					}},
+					// if deep.Equal(...) {...}
+					makeDeepEqual(testObj, testObj2),
 				)
 
 				indexGets, hasIndexedGets := []ast.Stmt{
@@ -289,92 +425,6 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 		},
 	}
 
-	shouldIncludeTestFkCheck := false
-	testFkChecking := &ast.FuncDecl{
-		Name: ast.NewIdent("Test" + tbl.GoTypeName + "FkChecking"),
-		Type: testFuncType,
-		Body: &ast.BlockStmt{
-			List: func() []ast.Stmt {
-				// post := MakePost()
-				stmts := []ast.Stmt{
-					&ast.AssignStmt{
-						Lhs: []ast.Expr{ast.NewIdent(tbl.VarName)},
-						Tok: token.DEFINE,
-						Rhs: []ast.Expr{
-							&ast.CallExpr{
-								Fun: ast.NewIdent("Make" + tbl.GoTypeName),
-							},
-						},
-					},
-				}
-				for _, col := range tbl.Columns {
-					if col.IsForeignKey {
-						shouldIncludeTestFkCheck = true
-						stmts = append(stmts, []ast.Stmt{
-
-							// post.QuotedPostID = 94354538969386985
-							&ast.AssignStmt{
-								Lhs: []ast.Expr{
-									&ast.SelectorExpr{
-										X:   ast.NewIdent(tbl.VarName),
-										Sel: ast.NewIdent(col.GoFieldName()),
-									},
-								},
-								Tok: token.ASSIGN,
-								Rhs: []ast.Expr{
-									&ast.BasicLit{
-										Kind:  token.INT,
-										Value: "94354538969386985",
-									},
-								},
-							},
-
-							// err := db.SavePost(&post)
-							&ast.AssignStmt{
-								Lhs: []ast.Expr{ast.NewIdent("err")},
-								Tok: token.DEFINE,
-								Rhs: []ast.Expr{
-									&ast.CallExpr{
-										Fun: &ast.SelectorExpr{
-											X:   testDB,
-											Sel: ast.NewIdent("Save" + tbl.GoTypeName),
-										},
-										Args: []ast.Expr{
-											&ast.UnaryExpr{
-												Op: token.AND,
-												X:  ast.NewIdent(tbl.VarName),
-											},
-										},
-									},
-								},
-							},
-
-							// assertForeignKeyError(t, err, "QuotedPostID", post.QuotedPostID)
-							&ast.ExprStmt{
-								X: &ast.CallExpr{
-									Fun: ast.NewIdent("AssertForeignKeyError"),
-									Args: []ast.Expr{
-										ast.NewIdent("t"),
-										ast.NewIdent("err"),
-										&ast.BasicLit{
-											Kind:  token.STRING,
-											Value: fmt.Sprintf("%q", col.GoFieldName()),
-										},
-										&ast.SelectorExpr{
-											X:   ast.NewIdent(tbl.VarName),
-											Sel: ast.NewIdent(col.GoFieldName()),
-										},
-									},
-								},
-							},
-						}...)
-					}
-				}
-				return stmts
-			}(),
-		},
-	}
-
 	testList := []ast.Decl{
 		makeItemFunc,
 		testCreateUpdateDelete,
@@ -402,6 +452,7 @@ func GenerateModelTestAST(tbl pkgschema.Table, schema pkgschema.Schema, gomodNam
 						Path: &ast.BasicLit{Kind: token.STRING, Value: fmt.Sprintf(`"%s/pkg/%s"`, gomodName, packageName)},
 						Name: ast.NewIdent("."),
 					},
+					&ast.ImportSpec{Path: &ast.BasicLit{Kind: token.STRING, Value: `"github.com/go-test/deep"`}},
 					&ast.ImportSpec{Path: &ast.BasicLit{Kind: token.STRING, Value: `"github.com/stretchr/testify/assert"`}},
 					&ast.ImportSpec{Path: &ast.BasicLit{Kind: token.STRING, Value: `"github.com/stretchr/testify/require"`}},
 				},

pkg/schema/column.go

@@ -0,0 +1,61 @@
+package schema
+
+import (
+	"strings"
+
+	"git.offline-twitter.com/offline-labs/gas-stack/pkg/textutils"
+)
+
+// Column represents a single column in a table.
+type Column struct {
+	TableName              string `db:"table_name"`
+	Name                   string `db:"column_name"`
+	Type                   string `db:"column_type"`
+	IsNotNull              bool   `db:"notnull"`
+	HasDefaultValue        bool   `db:"has_default_value"`
+	DefaultValue           string `db:"dflt_value"`
+	IsPrimaryKey           bool   `db:"is_primary_key"`
+	PrimaryKeyRank         uint   `db:"primary_key_rank"`
+	IsForeignKey           bool   `db:"is_foreign_key"`
+	ForeignKeyTargetTable  string `db:"fk_target_table"`
+	ForeignKeyTargetColumn string `db:"fk_target_column"`
+}
+
+// IsNullableForeignKey is a helper function.
+func (c Column) IsNullableForeignKey() bool {
+	return !c.IsNotNull && !c.IsPrimaryKey && c.IsForeignKey
+}
+
+func (c Column) IsNonCodeTableForeignKey() bool {
+	return c.IsForeignKey && strings.HasSuffix(c.Name, "_id")
+}
+
+func (c Column) GoFieldName() string {
+	if c.Name == "rowid" {
+		return "ID"
+	}
+	if c.IsNonCodeTableForeignKey() {
+		return textutils.SnakeToCamel(strings.TrimSuffix(c.Name, "_id")) + "ID"
+	}
+	return textutils.SnakeToCamel(c.Name)
+}
+
+// GoVarName returns the name of a local variable for this column, e.g., when used as a function parameter.
+func (c Column) GoVarName() string {
+	if c.Name == "rowid" {
+		return strings.ToLower(c.TableName)[0:1] + "ID"
+		// TODO: Or should it just be "id"??
+	}
+	// For foreign keys, use first letter of the target type and "ID".  "UserID" => "uID"
+	if c.IsNonCodeTableForeignKey() {
+		return strings.ToLower(c.ForeignKeyTargetTable)[0:1] + "ID"
+	}
+
+	// Otherwise, just use the whole name
+	return c.LongGoVarName()
+}
+
+// LongGoVarName returns a lowercased version of the field name (Pascal => Camel).
+func (c Column) LongGoVarName() string {
+	return textutils.CamelToPascal(c.GoFieldName())
+}

pkg/schema/index.go

@@ -0,0 +1,10 @@
+package schema
+
+type Index struct {
+	Name      string `db:"index_name"`
+	TableName string `db:"table_name"`
+	Columns   []string
+	IsUnique  bool `db:"is_unique"`
+	// TODO: `where ...` for partial indexes
+	// TODO: identify columns that are expressions
+}

pkg/schema/schema.go

@@ -0,0 +1,6 @@
+package schema
+
+type Schema struct {
+	Tables  map[string]Table
+	Indexes map[string]Index
+}

pkg/schema/table.go

@@ -2,66 +2,8 @@ package schema
 
 import (
 	"sort"
-	"strings"
-
-	"git.offline-twitter.com/offline-labs/gas-stack/pkg/textutils"
 )
 
-// Column represents a single column in a table.
-type Column struct {
-	TableName              string `db:"table_name"`
-	Name                   string `db:"column_name"`
-	Type                   string `db:"column_type"`
-	IsNotNull              bool   `db:"notnull"`
-	HasDefaultValue        bool   `db:"has_default_value"`
-	DefaultValue           string `db:"dflt_value"`
-	IsPrimaryKey           bool   `db:"is_primary_key"`
-	PrimaryKeyRank         uint   `db:"primary_key_rank"`
-	IsForeignKey           bool   `db:"is_foreign_key"`
-	ForeignKeyTargetTable  string `db:"fk_target_table"`
-	ForeignKeyTargetColumn string `db:"fk_target_column"`
-}
-
-// IsNullableForeignKey is a helper function.
-func (c Column) IsNullableForeignKey() bool {
-	return !c.IsNotNull && !c.IsPrimaryKey && c.IsForeignKey
-}
-
-func (c Column) IsNonCodeTableForeignKey() bool {
-	return c.IsForeignKey && strings.HasSuffix(c.Name, "_id")
-}
-
-func (c Column) GoFieldName() string {
-	if c.Name == "rowid" {
-		return "ID"
-	}
-	if c.IsNonCodeTableForeignKey() {
-		return textutils.SnakeToCamel(strings.TrimSuffix(c.Name, "_id")) + "ID"
-	}
-	return textutils.SnakeToCamel(c.Name)
-}
-
-// GoVarName returns the name of a local variable for this column, e.g., when used as a function parameter.
-func (c Column) GoVarName() string {
-	if c.Name == "rowid" {
-		return strings.ToLower(c.TableName)[0:1] + "ID"
-		// TODO: Or should it just be "id"??
-	}
-	// For foreign keys, use first letter of the target type and "ID".  "UserID" => "uID"
-	if c.IsNonCodeTableForeignKey() {
-		return strings.ToLower(c.ForeignKeyTargetTable)[0:1] + "ID"
-	}
-
-	// Otherwise, just use the whole name
-	return c.LongGoVarName()
-}
-
-// LongGoVarName returns a lowercased version of the field name (Pascal => Camel).
-func (c Column) LongGoVarName() string {
-	fieldname := c.GoFieldName()
-	return strings.ToLower(fieldname)[0:1] + fieldname[1:]
-}
-
 // Table is a single SQLite table.
 type Table struct {
 	TableName string `db:"name"`
@@ -119,17 +61,3 @@ func (t Table) HasAutoTimestamps() (hasCreatedAt bool, hasUpdatedAt bool) {
 	}
 	return
 }
-
-type Index struct {
-	Name      string `db:"index_name"`
-	TableName string `db:"table_name"`
-	Columns   []string
-	IsUnique  bool `db:"is_unique"`
-	// TODO: `where ...` for partial indexes
-	// TODO: identify columns that are expressions
-}
-
-type Schema struct {
-	Tables  map[string]Table
-	Indexes map[string]Index
-}

pkg/textutils/snake.go

@@ -9,3 +9,7 @@ func SnakeToCamel(s string) string {
 	}
 	return strings.Join(parts, "")
 }
+
+func CamelToPascal(s string) string {
+	return strings.ToLower(s)[0:1] + s[1:]
+}