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form.go
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form.go
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package form
import (
"errors"
)
const (
PostTypeKey = "__go_admin_post_type"
PostResultKey = "__go_admin_post_result"
PostIsSingleUpdateKey = "__go_admin_is_single_update"
PreviousKey = "__go_admin_previous_"
TokenKey = "__go_admin_t_"
MethodKey = "__go_admin_method_"
NoAnimationKey = "__go_admin_no_animation_"
)
// Values maps a string key to a list of values.
// It is typically used for query parameters and form values.
// Unlike in the http.Header map, the keys in a Values map
// are case-sensitive.
type Values map[string][]string
// Get gets the first value associated with the given key.
// If there are no values associated with the key, Get returns
// the empty string. To access multiple values, use the map
// directly.
func (f Values) Get(key string) string {
if len(f[key]) > 0 {
return f[key][0]
}
return ""
}
// Add adds the value to key. It appends to any existing
// values associated with key.
func (f Values) Add(key string, value string) {
f[key] = []string{value}
}
// IsEmpty check the key is empty or not.
func (f Values) IsEmpty(key ...string) bool {
for _, k := range key {
if f.Get(k) == "" {
return true
}
}
return false
}
// Has check the key exists or not.
func (f Values) Has(key ...string) bool {
for _, k := range key {
if f.Get(k) != "" {
return true
}
}
return false
}
// Delete deletes the values associated with key.
func (f Values) Delete(key string) {
delete(f, key)
}
// ToMap turn the values to a map[string]string type.
func (f Values) ToMap() map[string]string {
var m = make(map[string]string)
for key, v := range f {
if len(v) > 0 {
m[key] = v[0]
}
}
return m
}
// IsUpdatePost check the param if is from an update post request type or not.
func (f Values) IsUpdatePost() bool {
return f.Get(PostTypeKey) == "0"
}
// IsInsertPost check the param if is from an insert post request type or not.
func (f Values) IsInsertPost() bool {
return f.Get(PostTypeKey) == "1"
}
// PostError get the post result.
func (f Values) PostError() error {
msg := f.Get(PostResultKey)
if msg == "" {
return nil
}
return errors.New(msg)
}
// IsSingleUpdatePost check the param if from an single update post request type or not.
func (f Values) IsSingleUpdatePost() bool {
return f.Get(PostIsSingleUpdateKey) == "1"
}
// RemoveRemark removes the PostType and IsSingleUpdate flag parameters.
func (f Values) RemoveRemark() Values {
f.Delete(PostTypeKey)
f.Delete(PostIsSingleUpdateKey)
return f
}
// RemoveSysRemark removes all framework post flag parameters.
func (f Values) RemoveSysRemark() Values {
f.Delete(PostTypeKey)
f.Delete(PostIsSingleUpdateKey)
f.Delete(PostResultKey)
f.Delete(PreviousKey)
f.Delete(TokenKey)
f.Delete(MethodKey)
f.Delete(NoAnimationKey)
return f
}