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get_schema.go
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get_schema.go
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package uadmin
import (
"fmt"
"reflect"
"runtime/debug"
"strconv"
"strings"
"time"
)
// getSchema returns a schema of a form
func getSchema(a interface{}) (s ModelSchema, ok bool) {
// Get type of the models
t := reflect.TypeOf(a)
modelName := getModelName(a)
if t.Kind() == reflect.String {
modelName = strings.ToLower(a.(string))
}
// Check if the models has been processed and return it from global schema
if val, ok := Schema[modelName]; ok {
cpy, ok := deepCopy(val).(ModelSchema)
return cpy, ok
}
if t.Kind() != reflect.Struct {
Trail(WARNING, string(debug.Stack()))
Trail(WARNING, "Unable to get schema for none struct type (%s). %v", t.Name(), a)
return
}
// Get basic information about the model
s.Name = t.Name()
s.ModelName = strings.ToLower(t.Name())
s.DisplayName = getDisplayName(t.Name())
s.TableName = db.Config.NamingStrategy.TableName(s.Name)
s.Category = func() string {
dashboard := DashboardMenu{}
Get(&dashboard, "url = ?", modelName)
return dashboard.Cat
}()
// Analyze the fields of the model and add them to the fields list
s.Fields = []F{}
// Add inlines to schema
// Make a list of schema inline
s.Inlines = []*ModelSchema{}
// Get each inline and add it to the list of inlines
for _, i := range inlines[s.ModelName] {
inlineSchema, _ := getSchema(i)
s.Inlines = append(s.Inlines, &inlineSchema)
}
now := time.Now()
// Define generic types of fields
SType := reflect.TypeOf("") // String
DType := reflect.TypeOf(now) // Date
DType1 := reflect.TypeOf(&now) //
BType := reflect.TypeOf(true) // Bool
NType := reflect.TypeOf(int(0)) // Number
NType1 := reflect.TypeOf(int32(0)) //
NType2 := reflect.TypeOf(int64(0)) //
NType3 := reflect.TypeOf(uint(0)) //
NType4 := reflect.TypeOf(uint32(0)) //
NType5 := reflect.TypeOf(uint64(0)) //
NType6 := reflect.TypeOf(float32(0)) //
NType7 := reflect.TypeOf(float64(0)) //
// Loop over the fields of the model and get schema information
for index := 0; index < t.NumField(); index++ {
// If the field is private, skip it
if strings.ToLower(string(t.Field(index).Name[0])) == string(t.Field(index).Name[0]) {
continue
}
// Initialize the field
f := F{
Translations: []translation{},
}
// Get field's meta data
f.Name = t.Field(index).Name
f.DisplayName = getDisplayName(t.Field(index).Name)
f.ColumnName = db.Config.NamingStrategy.ColumnName("", t.Field(index).Name)
// Get uadmin tag from the field
tagList := strings.Split(t.Field(index).Tag.Get("uadmin"), ";")
tagMap := map[string]string{}
tagParts := map[string]string{}
// Rejoin items in the tagList if the semi colon was escaped
// For example: `uadmin:"help:use ; to separate your sales"`
// This will not work, you should escape the semi colon like this:
// `uadmin:"help:use \; to separate your sales"`
if len(tagList) > 0 {
//tagMap = map[string]string{}
var skipNext bool
var i int
for i = range tagList {
skipNext = false
tagParts[fmt.Sprint(i)] = tagList[i]
// Check if the escape is not the end of the uadmin tag and it is not escaped
if strings.HasSuffix(tagList[i], "\\") && i < len(tagList)-1 && !strings.HasSuffix(tagList[i], "\\\\") {
tagParts[fmt.Sprint(i)] += tagList[i+1]
skipNext = true
}
tagParts[fmt.Sprint(i)] = strings.Replace(tagParts[fmt.Sprint(i)], "\\\\", "\\", -1)
if skipNext {
i++
}
}
}
// Reconstruct list after rejoining
for _, v := range tagParts {
tagList = strings.SplitN(v, ":", 2)
tagMap[tagList[0]] = ""
if len(tagList) > 1 {
tagMap[tagList[0]] = tagList[1]
}
}
// Process uadmin tag
// First, get the fields meta properties
f.Help = tagMap["help"]
f.Pattern = tagMap["pattern"]
f.PatternMsg = tagMap["pattern_msg"]
_, f.Required = tagMap["required"]
_, f.Hidden = tagMap["hidden"]
f.FormDisplay = !f.Hidden
_, f.Encrypt = tagMap["encrypt"]
_, f.Approval = tagMap["approval"]
_, f.WebCam = tagMap["webcam"]
_, f.Stringer = tagMap["stringer"]
_, f.Deprecated = tagMap["deprecated"]
f.Min = tagMap["min"]
f.Max = tagMap["max"]
f.Format = tagMap["format"]
f.DefaultValue = tagMap["default_value"]
_, f.Searchable = tagMap["search"]
//_, f.LimitChoicesTo = tagMap["limit_choices_to"]
_, f.ListDisplay = tagMap["list_exclude"]
f.ListDisplay = !f.ListDisplay
if val, ok := tagMap["read_only"]; ok {
if val == "" || val == cTRUE {
f.ReadOnly = cTRUE
} else {
if !strings.HasPrefix(val, "true,") {
val = "true," + val
}
f.ReadOnly = val
}
}
_, f.Filter = tagMap["filter"]
_, f.CategoricalFilter = tagMap["categorical_filter"]
// Get custom display name of the field
if val, ok := tagMap["display_name"]; ok {
f.DisplayName = val
}
// Get the type name
// f.TypeName = t.Field(index).Type.Name()
typeName := strings.Split(t.Field(index).Type.String(), ".")
f.TypeName = typeName[len(typeName)-1]
// Process the field's data type
if t.Field(index).Type == SType {
f.Type = "string"
}
if t.Field(index).Type == DType || t.Field(index).Type == DType1 {
f.Type = "date"
}
if t.Field(index).Type == BType {
f.Type = "bool"
}
if t.Field(index).Type.Kind() == reflect.Struct && t.Field(index).Anonymous {
f.Type = cID
f.Name = "ID"
f.DisplayName = "ID"
f.ColumnName = "id"
}
if t.Field(index).Type == NType || t.Field(index).Type == NType1 || t.Field(index).Type == NType2 || t.Field(index).Type == NType3 || t.Field(index).Type == NType4 || t.Field(index).Type == NType5 || t.Field(index).Type == NType6 || t.Field(index).Type == NType7 {
f.Type = "number"
}
if (t.Field(index).Type.Kind() == reflect.Struct && !t.Field(index).Anonymous && t.Field(index).Type != DType) ||
(t.Field(index).Type.Kind() == reflect.Ptr && t.Field(index).Type.Elem().Kind() == reflect.Struct && !t.Field(index).Anonymous && t.Field(index).Type != DType1) {
f.Type = cFK
if val, ok := t.FieldByName(t.Field(index).Name + "ID"); ok {
// Check if the FK field is a number
if !(val.Type == NType || val.Type == NType1 || val.Type == NType2 || val.Type == NType3 || val.Type == NType4 || val.Type == NType5) {
Trail(ERROR, "Invalid FK %s.%s your %sID field is not an integer based number", t.Name(), t.Field(index).Name, t.Field(index).Name)
}
} else {
Trail(ERROR, "Invalid FK %s.%s no ID field found. Please add %sID field with a number type to your struct", t.Name(), t.Field(index).Name, t.Field(index).Name)
}
}
if f.Type == cNUMBER && strings.HasSuffix(t.Field(index).Name, "ID") && t.Field(index).Name != "ID" {
if _, ok := t.FieldByName(strings.TrimSuffix(t.Field(index).Name, "ID")); ok {
continue
}
}
if t.Field(index).Type.Kind() == reflect.Slice {
f.Type = cM2M
}
// End of basic type, now we process extended types
// First string extended type
if _, ok := tagMap[cEMAIL]; ok {
if f.Type != cSTRING {
Trail(WARNING, "Invalid email tag in %s.%s, field data type shold be string not (%s)", s.Name, f.Name, f.Type)
} else {
f.Type = cEMAIL
}
}
if _, ok := tagMap[cMULTILINGUAL]; ok {
if f.Type != cSTRING {
Trail(WARNING, "Invalid multilingual tag in %s.%s, field data type shold be string not (%s).", s.Name, f.Name, f.Type)
} else {
f.Type = cMULTILINGUAL
for _, lang := range activeLangs {
f.Translations = append(f.Translations, translation{
Name: fmt.Sprintf("%s (%s)", lang.Name, lang.EnglishName),
Code: lang.Code,
Flag: lang.Flag,
Default: lang.Default,
Active: lang.Active,
})
}
}
}
if _, ok := tagMap[cIMAGE]; ok {
if f.Type != cSTRING {
Trail(WARNING, "Invalid image tag in %s.%s, field data type shold be string not (%s).", s.Name, f.Name, f.Type)
} else {
f.Type = cIMAGE
f.UploadTo = tagMap["upload_to"]
if f.UploadTo != "" {
if f.UploadTo[0] != '/' {
f.UploadTo = "/" + f.UploadTo
}
if f.UploadTo[len(f.UploadTo)-1] != '/' {
f.UploadTo = f.UploadTo + "/"
}
}
}
}
if _, ok := tagMap[cFILE]; ok {
if f.Type != cSTRING {
Trail(WARNING, "Invalid file tag in %s.%s, field data type shold be string not (%s).", s.Name, f.Name, f.Type)
} else {
f.Type = cFILE
f.UploadTo = tagMap["upload_to"]
if f.UploadTo != "" {
if f.UploadTo[0] != '/' {
f.UploadTo = "/" + f.UploadTo
}
if f.UploadTo[len(f.UploadTo)-1] != '/' {
f.UploadTo = f.UploadTo + "/"
}
}
}
}
if _, ok := tagMap[cPASSWORD]; ok {
if f.Type != cSTRING {
Trail(WARNING, "Invalid password tag in %s.%s, field data type shold be string not (%s).", s.Name, f.Name, f.Type)
} else {
f.Type = cPASSWORD
}
}
if _, ok := tagMap[cHTML]; ok {
if f.Type != cSTRING {
Trail(WARNING, "Invalid html tag in %s.%s, field data type shold be string not (%s).", s.Name, f.Name, f.Type)
} else {
f.Type = cHTML
}
}
if _, ok := tagMap[cLINK]; ok {
if f.Type != cSTRING {
Trail(WARNING, "Invalid link tag in %s.%s, field data type shold be string not (%s).", s.Name, f.Name, f.Type)
} else {
f.Type = cLINK
}
}
if _, ok := tagMap[cCODE]; ok {
if f.Type != cSTRING {
Trail(WARNING, "Invalid code tag in %s.%s, field data type shold be string not (%s).", s.Name, f.Name, f.Type)
} else {
f.Type = cCODE
}
}
// Now we process number extended types
if val, ok := tagMap[cPROGRESSBAR]; ok {
if f.Type != cNUMBER {
Trail(WARNING, "Invalid progress_bar tag in %s.%s, field data type shold be number not (%s).", s.Name, f.Name, f.Type)
} else if val == "" {
// This is the case were the progress_bar tag was passed with no parameters
// In this case we create a default progress bar from 0 to 100 and make the color blue
// Tag Foramt: progress_bar
f.Type = cPROGRESSBAR
f.ProgressBar = map[float64]string{
100: defaultProgressBarColor,
}
} else {
// This is the base where a progress bar was passed with parameters
// Allowed formats are:
// progress_bar:100.0 (Set max value)
// progress_bar:100.0:#0f0 (set max value and colors)
// progress_bar:0.4:#f00,0.7:#ff0,1.0:#0f0 (set multiple colors and their thresholds)
progressList := strings.Split(val, ",")
if val, err := strconv.ParseFloat(progressList[0], 64); len(progressList) == 1 && err == nil {
//TODO: Make default color adjustable system wide
f.ProgressBar = map[float64]string{
val: defaultProgressBarColor,
}
f.Type = cPROGRESSBAR
} else {
if len(progressList) == 1 && !strings.Contains(progressList[0], ":") {
Trail(WARNING, "Invalid progress_bar tag in %s.%s, unknown single value format (%s)", s.Name, f.Name, progressList[0])
} else {
errorFound := false
f.ProgressBar = map[float64]string{}
for _, v := range progressList {
thresholdList := strings.Split(v, ":")
// TODO: Trim white space for thresholdList
if len(thresholdList) != 2 {
Trail(WARNING, "Invalid progress_bar tag in %s.%s, unknown multi value format (%s)", s.Name, f.Name, v)
errorFound = true
} else if _, err := strconv.ParseFloat(thresholdList[0], 64); err != nil {
Trail(WARNING, "Invalid progress_bar tag in %s.%s, invalid number for threshold (%s)", s.Name, f.Name, v)
errorFound = true
//TODO: Check the color
} else {
val, _ := strconv.ParseFloat(thresholdList[0], 64)
f.ProgressBar[val] = thresholdList[1]
}
}
if !errorFound {
f.Type = cPROGRESSBAR
}
}
}
}
}
if _, ok := tagMap["money"]; ok {
if f.Type != cNUMBER {
Trail(WARNING, "Invalid money tag in %s.%s, field data type shold be number not (%s).", s.Name, f.Name, f.Type)
} else {
f.Type = cMONEY
}
}
// Process static list type
// The way this is checked is if the type is not an int and the kind is an int the
// it is a static list
if t.Field(index).Type != NType && t.Field(index).Type.Kind() == reflect.Int {
f.Type = cLIST
f.Choices = []Choice{
{" - ", 0, false},
}
for i := 0; i < t.Field(index).Type.NumMethod(); i++ {
v := t.Field(index).Type.Method(i).Name
e := reflect.ValueOf(a).Field(index)
e1 := reflect.Indirect(e).Method(i)
tempK := e1.Call([]reflect.Value{})
k, err := strconv.ParseUint(fmt.Sprint(tempK[0]), 10, 64)
if err != nil {
Trail(ERROR, "Unable to get list value for %s.%s because %s", modelName, f.Name, err.Error())
}
// TODO: Make list multi lingual
f.Choices = append(f.Choices, Choice{
V: getDisplayName(v),
K: uint(k),
})
}
}
f.FormDisplay = true
s.Fields = append(s.Fields, f)
}
// Add method Fields
for index := 0; index < t.NumMethod(); index++ {
// Check if the method should be included in the field list
if strings.Contains(t.Method(index).Name, "__Form") || strings.Contains(t.Method(index).Name, "__List") {
if strings.ToLower(string(t.Method(index).Name[0])) == string(t.Method(index).Name[0]) {
continue
}
f := F{
Translations: []translation{},
}
f.Name = t.Method(index).Name
f.DisplayName = strings.TrimSuffix(t.Method(index).Name, "__Form")
f.DisplayName = strings.TrimSuffix(f.DisplayName, "__List")
f.DisplayName = strings.TrimSuffix(f.DisplayName, "__Form")
f.DisplayName = getDisplayName(f.DisplayName)
f.Type = cSTRING
f.ReadOnly = cTRUE
f.IsMethod = true
f.FormDisplay = strings.Contains(t.Method(index).Name, "__Form")
f.ListDisplay = strings.Contains(t.Method(index).Name, "__List")
s.Fields = append(s.Fields, f)
}
}
// Initialize lists
s.IncludeFormJS = []string{}
s.IncludeListJS = []string{}
//Schema[strings.ToLower(t.Name())] = s
return s, true
}