大约有 44,000 项符合查询结果（耗时：0.0343秒） [XML]
Rails has_and_belongs_to_many migration
...
You need to add a separate join table with only a restaurant_id and user_id (no primary key), in alphabetical order.
First run your migrations, then edit the generated migration file.
Rails 3
rails g migration create_restaurants_users_table
Rails 4...
Passport.js - Error: failed to serialize user into session
...dn't implement passport.serializeUser and passport.deserializeUser. Try adding this:
passport.serializeUser(function(user, done) {
done(null, user);
});
passport.deserializeUser(function(user, done) {
done(null, user);
});
...
How to get last N records with activerecord?
With :limit in query, I will get first N records. What is the easiest way to get last N records?
14 Answers
...
Can I use view pager with views (not with fragments)
I am using ViewPager for swiping between Fragments , but can I use ViewPager to swipe between Views simple XML layout?
...
How to load external webpage inside WebView
My problem is that the webpage is not loaded inside the webview.
13 Answers
13
...
How to have conditional elements and keep DRY with Facebook React's JSX?
How do I optionally include an element in JSX? Here is an example using a banner that should be in the component if it has been passed in. What I want to avoid is having to duplicate HTML tags in the if statement.
...
How to check a checkbox in capybara?
I'm using Rspec and Capybara.
13 Answers
13
...
how to exclude null values in array_agg like in string_agg using postgres?
... use array_agg to collect names, I get my names separated by commas, but in case there is a null value, that null is also taken as a name in the aggregate. For example :
...
“ArrayAdapter requires the resource ID to be a TextView” xml problems
I am getting an error when trying to set my view to display the ListView for the file I want to display(text file). I am pretty sure it has something to do with the xml. I just want to display the information from this.file = fileop.ReadFileAsList("Installed_packages.txt"); . My code:
...
How to find duplicates in 2 columns not 1
I have a MySQL database table with two columns that interest me. Individually they can each have duplicates, but they should never have a duplicate of BOTH of them having the same value.
...