大约有 417 项符合查询结果（耗时：0.0206秒） [XML]
Django - filtering on foreign key properties
...
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...
代码块超过1.2w编译apk报错问题 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
报错信息：
3月 04, 2025 9:50:11 上午 com.google.appengine.tools.development.ApiProxyLocalImpl log
严重: javax.servlet.ServletContext log: Exception while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract long com.google.appinv...
Why does the month argument range from 0 to 11 in JavaScript's Date constructor?
...dont deprecate this it will still happen - feel free to coment in the year 2025 and on ;-)
– Mauricio Gracia Gutierrez
Oct 8 '19 at 14:39
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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 I get the difference between two Dates in JavaScript?
...e JsFiddle DEMO
var date1 = new Date();
var date2 = new Date("2025/07/30 21:59:00");
//Customise date2 for your required future time
showDiff();
function showDiff(date1, date2){
var diff = (date2 - date1)/1000;
diff = Math.abs(Math.floor(diff));
var days = Math.f...
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);
...
Center a popup window on screen?
...At this rate, we will have an answer for 5 monitors in 2020, 6 monitors in 2025, 7 monitors in 2030... let's keep this cycle going!
– Tony M
Mar 20 '15 at 20:34
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