大约有 47,000 项符合查询结果（耗时：0.0421秒） [XML]
Laravel migration: unique key is too long, even if specified
...
Specify a smaller length for your e-mail:
$table->string('email', 250);
Which is the default, actually:
$table->string('email');
And you should be good.
For Laravel 5.4 you can find a solution in this Laravel 5.4: Specified key was too long error, Laravel News post:...
When should I use GET or POST method? What's the difference between them?
... PHP confuses the concepts a bit. A POST request gets input from the query string and through the request body. A GET request just gets input from the query string. So a POST request is a superset of a GET request; you can use $_GET in a POST request, and it may even make sense to have parameters wi...
Django Rest Framework - Could not resolve URL for hyperlinked relationship using view name “user-det
...
or you can make use of extra_kwargs as drf recommends: extra_kwargs = {'url': {'view_name': 'myapp:user-detail'}}
– ChrisRob
Jan 25 at 15:11
...
Determine the type of an object?
...t question, don't use type - use isinstance:
def foo(obj):
"""given a string with items separated by spaces,
or a list or tuple,
do something sensible
"""
if isinstance(obj, str):
obj = str.split()
return _foo_handles_only_lists_or_tuples(obj)
This covers the cas...
Using the RUN instruction in a Dockerfile with 'source' does not work
...xpect a fully POSIX shell at /bin/sh. The bash shell isn't just POSIX plus extra builtins. There are builtins (and more) that behave entirely different than those in POSIX. I FULLY support avoiding POSIX (and the fallacy that any script that you didn't test on another shell is going to work because ...
Webfonts or Locally loaded fonts?
...
I use the inline css method because the overhead of the extra request is more than the size increase when bease64 encoding. This is also further offset by gizip compression by the server of the css files.
Other option is to use asynchronous loading of fonts but most often users w...
how to detect search engine bots with php?
...
Check the $_SERVER['HTTP_USER_AGENT'] for some of the strings listed here:
http://www.useragentstring.com/pages/useragentstring.php
Or more specifically for crawlers:
http://www.useragentstring.com/pages/useragentstring.php?typ=Crawler
If you want to -say- log the number of ...
Programmatically change input type of the EditText from PASSWORD to NORMAL & vice versa
...
public void onClick(View view) {
if(buttons.get(2).getText().toString().equalsIgnoreCase(getResources().getString(R.string.show))){
editTexts.get(1).setInputType(InputType.TYPE_CLASS_TEXT);
editTexts.get(1).setSelection(editTexts.get(1).getText().length());
...
How to preventDefault on anchor tags?
...gs (<a></a>) to see if their href attribute is either an empty string ("") or a hash ('#') or there is an ng-click assignment. If it finds any of these conditions, it catches the event and prevents the default behavior.
The only down side is that it runs this directive for all anchor t...
Rails Root directory path?
... 3 and newer:
Rails.root
which returns a Pathname object. If you want a string you have to add .to_s. If you want another path in your Rails app, you can use join like this:
Rails.root.join('app', 'assets', 'images', 'logo.png')
In Rails 2 you can use the RAILS_ROOT constant, which is a string...