forked from volatiletech/sqlboiler
/
text_helpers.go
199 lines (166 loc) · 6.68 KB
/
text_helpers.go
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package main
import (
"fmt"
"strings"
"github.com/vattle/sqlboiler/bdb"
"github.com/vattle/sqlboiler/strmangle"
)
// RelationshipToOneTexts contains text that will be used by templates.
type RelationshipToOneTexts struct {
ForeignKey bdb.ForeignKey
LocalTable struct {
NameGo string
ColumnNameGo string
}
ForeignTable struct {
NameGo string
NamePluralGo string
Name string
ColumnNameGo string
ColumnName string
}
Function struct {
PackageName string
Name string
ForeignName string
Varname string
Receiver string
OneToOne bool
LocalAssignment string
ForeignAssignment string
}
}
func textsFromForeignKey(packageName string, tables []bdb.Table, table bdb.Table, fkey bdb.ForeignKey) RelationshipToOneTexts {
r := RelationshipToOneTexts{}
r.ForeignKey = fkey
r.LocalTable.NameGo = strmangle.TitleCase(strmangle.Singular(table.Name))
r.LocalTable.ColumnNameGo = strmangle.TitleCase(strmangle.Singular(fkey.Column))
r.ForeignTable.Name = fkey.ForeignTable
r.ForeignTable.NameGo = strmangle.TitleCase(strmangle.Singular(fkey.ForeignTable))
r.ForeignTable.NamePluralGo = strmangle.TitleCase(strmangle.Plural(fkey.ForeignTable))
r.ForeignTable.ColumnName = fkey.ForeignColumn
r.ForeignTable.ColumnNameGo = strmangle.TitleCase(strmangle.Singular(fkey.ForeignColumn))
r.Function.PackageName = packageName
r.Function.Name = strmangle.TitleCase(strmangle.Singular(strings.TrimSuffix(fkey.Column, "_id")))
plurality := strmangle.Plural
if fkey.Unique {
plurality = strmangle.Singular
}
r.Function.ForeignName = mkFunctionName(strmangle.Singular(fkey.ForeignTable), strmangle.TitleCase(plurality(fkey.Table)), fkey.Column, false)
r.Function.Varname = strmangle.CamelCase(strmangle.Singular(fkey.ForeignTable))
r.Function.Receiver = strings.ToLower(table.Name[:1])
if fkey.Nullable {
col := table.GetColumn(fkey.Column)
r.Function.LocalAssignment = fmt.Sprintf("%s.%s", strmangle.TitleCase(fkey.Column), strings.TrimPrefix(col.Type, "null."))
} else {
r.Function.LocalAssignment = strmangle.TitleCase(fkey.Column)
}
if fkey.ForeignColumnNullable {
foreignTable := bdb.GetTable(tables, fkey.ForeignTable)
col := foreignTable.GetColumn(fkey.ForeignColumn)
r.Function.ForeignAssignment = fmt.Sprintf("%s.%s", strmangle.TitleCase(fkey.ForeignColumn), strings.TrimPrefix(col.Type, "null."))
} else {
r.Function.ForeignAssignment = strmangle.TitleCase(fkey.ForeignColumn)
}
return r
}
func textsFromOneToOneRelationship(packageName string, tables []bdb.Table, table bdb.Table, toMany bdb.ToManyRelationship) RelationshipToOneTexts {
fkey := bdb.ForeignKey{
Table: toMany.Table,
Name: "none",
Column: toMany.Column,
Nullable: toMany.Nullable,
Unique: toMany.Unique,
ForeignTable: toMany.ForeignTable,
ForeignColumn: toMany.ForeignColumn,
ForeignColumnNullable: toMany.ForeignColumnNullable,
ForeignColumnUnique: toMany.ForeignColumnUnique,
}
rel := textsFromForeignKey(packageName, tables, table, fkey)
rel.Function.Name = strmangle.TitleCase(strmangle.Singular(toMany.ForeignTable))
rel.Function.ForeignName = mkFunctionName(strmangle.Singular(toMany.Table), strmangle.TitleCase(strmangle.Singular(toMany.Table)), toMany.ForeignColumn, false)
rel.Function.OneToOne = true
return rel
}
// RelationshipToManyTexts contains text that will be used by templates.
type RelationshipToManyTexts struct {
LocalTable struct {
NameGo string
NameSingular string
ColumnNameGo string
}
ForeignTable struct {
NameGo string
NameSingular string
NamePluralGo string
NameHumanReadable string
ColumnNameGo string
Slice string
}
Function struct {
Name string
ForeignName string
Receiver string
LocalAssignment string
ForeignAssignment string
}
}
// textsFromRelationship creates a struct that does a lot of the text
// transformation in advance for a given relationship.
func textsFromRelationship(tables []bdb.Table, table bdb.Table, rel bdb.ToManyRelationship) RelationshipToManyTexts {
r := RelationshipToManyTexts{}
r.LocalTable.NameSingular = strmangle.Singular(table.Name)
r.LocalTable.NameGo = strmangle.TitleCase(r.LocalTable.NameSingular)
r.LocalTable.ColumnNameGo = strmangle.TitleCase(rel.Column)
r.ForeignTable.NameSingular = strmangle.Singular(rel.ForeignTable)
r.ForeignTable.NamePluralGo = strmangle.TitleCase(strmangle.Plural(rel.ForeignTable))
r.ForeignTable.NameGo = strmangle.TitleCase(r.ForeignTable.NameSingular)
r.ForeignTable.ColumnNameGo = strmangle.TitleCase(rel.ForeignColumn)
r.ForeignTable.Slice = fmt.Sprintf("%sSlice", strmangle.TitleCase(r.ForeignTable.NameSingular))
r.ForeignTable.NameHumanReadable = strings.Replace(rel.ForeignTable, "_", " ", -1)
r.Function.Receiver = strings.ToLower(table.Name[:1])
r.Function.Name = mkFunctionName(r.LocalTable.NameSingular, r.ForeignTable.NamePluralGo, rel.ForeignColumn, rel.ToJoinTable)
plurality := strmangle.Singular
foreignNamingColumn := rel.ForeignColumn
if rel.ToJoinTable {
plurality = strmangle.Plural
foreignNamingColumn = rel.JoinLocalColumn
}
r.Function.ForeignName = strmangle.TitleCase(plurality(strings.TrimSuffix(foreignNamingColumn, "_id")))
if rel.Nullable {
col := table.GetColumn(rel.Column)
r.Function.LocalAssignment = fmt.Sprintf("%s.%s", strmangle.TitleCase(rel.Column), strings.TrimPrefix(col.Type, "null."))
} else {
r.Function.LocalAssignment = strmangle.TitleCase(rel.Column)
}
if rel.ForeignColumnNullable {
foreignTable := bdb.GetTable(tables, rel.ForeignTable)
col := foreignTable.GetColumn(rel.ForeignColumn)
r.Function.ForeignAssignment = fmt.Sprintf("%s.%s", strmangle.TitleCase(rel.ForeignColumn), strings.TrimPrefix(col.Type, "null."))
} else {
r.Function.ForeignAssignment = strmangle.TitleCase(rel.ForeignColumn)
}
return r
}
// mkFunctionName checks to see if the foreign key name is the same as the local table name (minus _id suffix)
// Simple case: yes - we can name the function the same as the plural table name
// Not simple case: We have to name the function based off the foreign key and the foreign table name
func mkFunctionName(fkeyTableSingular, foreignTablePluralGo, fkeyColumn string, toJoinTable bool) string {
colName := strings.TrimSuffix(fkeyColumn, "_id")
if toJoinTable || fkeyTableSingular == colName {
return foreignTablePluralGo
}
return strmangle.TitleCase(colName) + foreignTablePluralGo
}
// PreserveDot allows us to pass in templateData to relationship templates
// called with the template function.
type PreserveDot struct {
Dot templateData
Rel RelationshipToOneTexts
}
func preserveDot(data templateData, obj RelationshipToOneTexts) PreserveDot {
return PreserveDot{
Dot: data,
Rel: obj,
}
}