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Django - How to rename a model field using South?
... old column name of the database (not the model field name), for example: "user_id" and "full_name" would be the new name you want the column to have (again, database column and not field name). So: db.rename_column('mainapp_profile', 'user_id', 'new_user_id') Also, if you're dealing with foreign ...
schema builder laravel migrations unique on two columns
... a unique key across multiple columns.
$table->unique(array('mytext', 'user_id'));
or (a little neater)
$table->unique(['mytext', 'user_id']);
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...
javascript node.js next()
...example you posted:
function loadUser(req, res, next) {
if (req.session.user_id) {
User.findById(req.session.user_id, function(user) {
if (user) {
req.currentUser = user;
return next();
} else {
res.redirect('/sessions/new');
}
});
} else {
...
How to empty/destroy a session in rails?
...
to delete a user's session
session.delete(:user_id)
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Mapping many-to-many association table with extra column(s)
...rvice>();
}
class UserService {
@ManyToOne
@JoinColumn(name = "user_id")
private User user;
@ManyToOne
@JoinColumn(name = "service_code")
private Service service;
@Column(name = "blocked")
private boolean blocked;
}
class Service {
@OneToMany(mappedBy = "se...
How do you delete an ActiveRecord object?
...g Rails 5 and above, the following solution will work.
#delete based on id
user_id = 50
User.find(id: user_id).delete_all
#delete based on condition
threshold_age = 20
User.where(age: threshold_age).delete_all
https://www.rubydoc.info/docs/rails/ActiveRecord%2FNullRelation:delete_all
...
“Insert if not exists” statement in SQLite
...sert into bookmarks (users_id, lessoninfo_id)
select 1, 167
EXCEPT
select user_id, lessoninfo_id
from bookmarks
where user_id=1
and lessoninfo_id=167;
This is the fastest way.
For some other SQL engines, you can use a Dummy table containing 1 record.
e.g:
select 1, 167 from ONE_RECORD_DUMMY_TAB...
MySQL Creating tables with Foreign Keys giving errno: 150
...AR(40));
CREATE TABLE userroles(
id INT AUTO_INCREMENT PRIMARY KEY,
user_id INT NOT NULL,
FOREIGN KEY(user_id) REFERENCES users(id));
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Twitter API returns error 215, Bad Authentication Data
...n 1.
$friendsJson = $connection->get('/friends/ids.json?cursor=-1&user_id=34342323');
This will return you list of user's friends.
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...
ViewParam vs @ManagedProperty(value = “#{param.id}”)
... command components.
Example:
<f:metadata>
<f:viewParam id="user_id" name="id" value="#{bean.user}"
required="true" requiredMessage="Invalid page access. Please use a link from within the system."
converter="userConverter" converterMessage="Unknown user ID."
/>
...