大约有 44,000 项符合查询结果（耗时：0.0443秒） [XML]
find vs find_by vs where
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Model.all
Model.first
find_by is used as a helper when you're searching for information within a column, and it maps to such with naming conventions. For instance, if you have a column named name in your database, you'd use the following syntax:
Model.find_by(name: "Bob")
.where is more of a ...
dynamically add and remove view to viewpager
...figuring out which ViewPager methods are called by ViewPager and which are for other purposes, I came up with a solution. I present it here since I see a lot of people have struggled with this and I didn't see any other relevant answers.
First, here's my adapter; hopefully comments within the cod...
How to delete from select in MySQL?
This code doesn't work for MySQL 5.0, how to re-write it to make it work
4 Answers
4
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How to get form field's id in Django?
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You can also use id_for_label:
{{ field.id_for_label }}
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Set “Homepage” in Asp.Net MVC
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In MVC 5. if you have a form login, when you click login on the home page, it will then still redirect to Home controller , not your custom controller specified in the route. register action will do similar thing. So apart from changing routeconfig...
How do I set the offset for ScrollSpy in Bootstrap?
...means that scrolling to the proper place is up to you.
Try this, it works for me: add an event handler for the navigation clicks.
var offset = 80;
$('.navbar li a').click(function(event) {
event.preventDefault();
$($(this).attr('href'))[0].scrollIntoView();
scrollBy(0, -offset);
});
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How to conditionally push an item in an observable array?
...s not already present. Is there any "find" function or recommended pattern for achieving this in KnockoutJS?
4 Answers
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How to put more than 1000 values into an Oracle IN clause [duplicate]
... JOIN to query the values. I don't know whether that's actually better performance or not, though.
– Neil Barnwell
Dec 30 '08 at 14:17
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Confirm deletion in modal / dialog using Twitter Bootstrap?
... table of rows tied to database rows. I'd like to have a "delete row" link for each row, but I would like to confirm with the user beforehand.
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Can you do greater than comparison on a date in a Rails 3 search?
...tirely true; where() automatically escapes the input when it's used in the format shown above with question-marks in place of variables, with them listed afterwards in the function call. It is NOT safe to use it in this way: Note.where("date > #{p[:date]}")
– bdx
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