大约有 471 项符合查询结果（耗时：0.0131秒） [XML]
What do helper and helper_method do?
...ntroller.rb
def current_user
@current_user ||= User.find_by_id!(session[:user_id])
end
helper_method :current_user
the helper method on the other hand, is for importing an entire helper to the views provided by the controller (and it's inherited controllers). What this means is doing
# applicat...
SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW
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For SQL Server 2016 SP1+, see answer by lad2025.
– MBWise
Nov 15 '17 at 10:15
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Django queries - id vs pk
...ed to use a variable named pk. I prefer using something more verbose, like user_id instead of pk.
Following the same convention is preferable across the whole project. In your case id is a parameter name, not a property, so there is almost no difference in timings. Parameter names do not clash with...
How to check if a model has a certain column/attribute?
...s checking my models for ones that had a user, but had to instead look for user_id since some models delegated user.
– MattyB
Jul 22 '15 at 16:16
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Django - filtering on foreign key properties
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student_user = User.objects.get(id=user_id)
available_subjects = Subject.objects.exclude(subject_grade__student__user=student_user) # My ans
enrolled_subjects = SubjectGrade.objects.filter(student__user=student_user)
context.update({'available_subjects': avail...
Rails has_many with alias name
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Give this a shot:
has_many :jobs, foreign_key: "user_id", class_name: "Task"
Note, that :as is used for polymorphic associations.
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Are there any naming convention guidelines for REST APIs? [closed]
...tching. It's doubtful, however, that the result of your request is only a user_id. It's much more likely that the result of the request is a User. Therefore, user is the noun you're fetching
www.example.com/greeting/user/x/
Makes sense to me. Focus on making your REST request a kind of noun p...
Hibernate Criteria returns children multiple times with FetchType.EAGER
... @CollectionTable(name = "user_roles", joinColumns = @JoinColumn(name = "user_id"))
@Column(name = "role")
@ElementCollection(fetch = FetchType.EAGER)
@BatchSize(size = 200)
private Set<Role> roles;
@OneToMany(fetch = FetchType.LAZY, mappedBy = "user")
@OrderBy("dateTime D...
How do you do a limit query in JPQL or HQL?
...ry, refer this.
@Query(value =
"SELECT * FROM user_metric UM WHERE UM.user_id = :userId AND UM.metric_id = :metricId LIMIT :limit", nativeQuery = true)
List<UserMetricValue> findTopNByUserIdAndMetricId(
@Param("userId") String userId, @Param("metricId") Long metricId,
@Param("limi...
How do you save/store objects in SharedPreferences on Android?
...ic User getUserInfo(Context con)
{
String id = getData(con, Constants.USER_ID, null);
String name = getData(con, Constants.USER_NAME, null);
if(id != null && name != null)
{
User user = new User(); //Hope you will have a user Object.
user.setId(id);
...