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Rails has_and_belongs_to_many migration
... t.references :restaurant
t.references :user
end
add_index :restaurants_users, [:restaurant_id, :user_id]
add_index :restaurants_users, :user_id
end
def self.down
drop_table :restaurants_users
end
end
Rails 4
class CreateRestaurantsUsers < ActiveRecord::Mig...
How can I list all collections in the MongoDB shell?
... collections:
show collections
Output:
collection1
collection2
system.indexes
(or)
show tables
Output:
collection1
collection2
system.indexes
(or)
db.getCollectionNames()
Output:
[ "collection1", "collection2", "system.indexes" ]
To enter or use given collection
use collec...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...制数据
【数据库】LeanDB 数据库扩展
【数据库】MySQL + php后端数据库
【数据库】MongoDB + php后端数据库
您的改进建议 联系方式： 不需要回复的可留空~ 意见反馈（300字以内）：...
Convert pandas timezone-aware DateTimeIndex to naive timestamp, but in certain timezone
You can use the function tz_localize to make a Timestamp or DateTimeIndex timezone aware, but how can you do the opposite: how can you convert a timezone aware Timestamp to a naive one, while preserving its timezone?
...
Facebook Graph API v2.0+ - /me/friends returns empty, or only friends who also use my application
...
In v2.0 of the Graph API, calling /me/friends returns the person's friends who also use the app.
In addition, in v2.0, you must request the user_friends permission from each user. user_friends is no longer included by default in every login. Each user...
How do you stash an untracked file?
...
Add the file to the index:
git add path/to/untracked-file
git stash
The entire contents of the index, plus any unstaged changes to existing files, will all make it into the stash.
...
MySQL Select Date Equal to Today
...this solution is absolutely correct, it does not scale well (cannot use an index on signup_date, even if such an index exists). Prefer Serjio's solution.
– RandomSeed
Oct 21 '15 at 8:01
...
Use JSTL forEach loop's varStatus as an ID
...is a LoopTagStatus object, not an int. Use:
<div id="divIDNo${theCount.index}">
To clarify:
${theCount.index} starts counting at 0 unless you've set the begin attribute
${theCount.count} starts counting at 1
shar...
Adding devices to team provisioning profile
...off but you can read more here: developer.apple.com/library/ios/qa/qa1814/_index.html
– thattyson
Nov 11 '15 at 0:13
|
show 3 more comments
...
Copy file(s) from one project to another using post build event…VS2010
...
xcopy "$(ProjectDir)Views\Home\Index.cshtml" "$(SolutionDir)MEFMVCPOC\Views\Home"
and if you want to copy entire folders:
xcopy /E /Y "$(ProjectDir)Views" "$(SolutionDir)MEFMVCPOC\Views"
Update: here's the working version
xcopy "$(ProjectDir)Views\...