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体验新版 GitCode,发现更多精彩内容 >>
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7c32f09c
编写于
8月 03, 2020
作者:
E
Eugene Kenny
提交者:
GitHub
8月 03, 2020
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Merge pull request #39825 from manuelmeurer/improve-active-record-validations-docs
improve active record validation docs [ci skip]
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fb30d1c5
02a93f6a
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and
11 deletion
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-11
guides/source/active_record_validations.md
guides/source/active_record_validations.md
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guides/source/active_record_validations.md
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7c32f09c
...
...
@@ -558,8 +558,8 @@ Since `false.blank?` is true, if you want to validate the presence of a boolean
field you should use one of the following validations:
```
ruby
validates
:boolean_field_name
,
inclusion:
{
in:
[
true
,
false
]
}
validates
:boolean_field_name
,
exclusion:
{
in:
[
nil
]
}
validates
:boolean_field_name
,
inclusion:
[
true
,
false
]
validates
:boolean_field_name
,
exclusion:
[
nil
]
```
By using one of these validations, you will ensure the value will NOT be
`nil`
...
...
@@ -684,7 +684,7 @@ validator class as `options`:
```
ruby
class
GoodnessValidator
<
ActiveModel
::
Validator
def
validate
(
record
)
if
options
[
:fields
].
any?
{
|
field
|
record
.
send
(
field
)
==
"Evil"
}
if
options
[
:fields
].
any?
{
|
field
|
record
.
send
(
field
)
==
"Evil"
}
record
.
errors
.
add
:base
,
"This person is evil"
end
end
...
...
@@ -799,9 +799,9 @@ class Person < ApplicationRecord
# Hard-coded message
validates
:name
,
presence:
{
message:
"must be given please"
}
# Message with dynamic attribute value. %{value} will be replaced
with
#
the actual value of the attribute. %{attribute} and %{model} also
# available.
# Message with dynamic attribute value. %{value} will be replaced
#
with the actual value of the attribute. %{attribute} and %{model}
# a
re also a
vailable.
validates
:age
,
numericality:
{
message:
"%{value} seems wrong"
}
# Proc
...
...
@@ -810,7 +810,7 @@ class Person < ApplicationRecord
# object = person object being validated
# data = { model: "Person", attribute: "Username", value: <username> }
message:
->
(
object
,
data
)
do
"Hey
#{
object
.
name
}
!,
#{
data
[
:value
]
}
is taken already! Try again
#{
Time
.
zone
.
tomorrow
}
"
"Hey
#{
object
.
name
}
,
#{
data
[
:value
]
}
is already taken.
"
end
}
end
...
...
@@ -1260,9 +1260,9 @@ Assuming we have a model that's been saved in an instance variable named
<
h2
><
%= pluralize(@article.errors.count, "error") %> prohibited this article from being saved:</h2>
<ul>
<% @article.errors.each do |error| %>
<li><%=
error
.
full_message
%></li>
<
% end
%>
<% @article.errors.each do |error| %>
<li><%=
error
.
full_message
%></li>
<
% end
%>
<
/ul>
</
div
>
<
% end
%>
...
...
@@ -1274,7 +1274,7 @@ the entry.
```
html
<div
class=
"field_with_errors"
>
<input
id=
"article_title"
name=
"article[title]"
size=
"30"
type=
"text"
value=
""
>
<input
id=
"article_title"
name=
"article[title]"
size=
"30"
type=
"text"
value=
""
>
</div>
```
...
...
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