Tag Archives: Rails

Now I will explain how to use partial template in CakePHP 3, which is created like Rails. The Japanese document of CakePHP 3 is not up to date, but English document is.

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Rails How to execute task in seed

Saturday July 25th, 2015 Kenji

Here’s how I executed task in seeds.rb, in Rails.

Environment

Ruby 2.2.2p95
Rails 4.1.8
Rake 10.4.2

First, create a task with rails g task sample shot. The following code will be generated.

namespace :sample do
desc "shot sample"
task shot: :environment do
# something to do
end
end

namespace :sample do

desc "shot sample"

task shot: :environment do

# something to do

end

Now, we can execute the task with bundle exec rake sample:shot. The goal is to execute the task when bundle exec rake db:seed is executed. Maybe, it is the same way to execute task in rails code.

Solution

Add the code into seeds.rb, like below.

ENV['SOMETHING'] = 'value'
Rake::Task['sample:shot'].invoke

1 2	ENV['SOMETHING'] = 'value' Rake::Task['sample:shot'].invoke

Environment (test, development, production) is passed, which is valid in rake db:seed. On the above, set 'value' to SOMETHING. It is like FEATURES in rake db:fixture:load FIXTURES=xxxx.

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Rails gem to generate Sitemap

Monday May 12th, 2014 Kenji

Sorry, this entry is only available in 日本語.

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Rails: The Code to show Tooltip

Saturday February 22nd, 2014 Kenji

This is the story I tried to show tool tip in Ruby On Rails.

It’s simple. Show help message when it is clicked, and hide message when it is clicked again. はてなマークがクリックされたらツールチップを表示・非表示するということです。

I used javascript (jQuery) and CSS. And I created useful method in helper as follows.

Environment

Ruby 1.8.7p374
Rails 3.0.1
jQuery 1.4.3

Base

.help-tooltip {
max-width: 600px;
background-color: #fff;
display: none;
z-index: 10;
font-size: 12px;
position: static;
border: solid 1px black;
padding: 2px;
}

.help-tooltip {

max-width: 600px;

background-color: #fff;

display: none;

z-index: 10;

font-size: 12px;

position: static;

border: solid 1px black;

padding: 2px;

}

$('.help-tooltip-trigger').live(
'click',
function () {
$(this).next().slideToggle('fast');
}
);

$('.help-tooltip-trigger').live(

'click',

function () {

$(this).next().slideToggle('fast');

}

);

上のように javascript と css を記述して、次のように HTML を書きます。

<span class="help-tooltip-trigger">
<img src="image/quotation.png" style="width:16px;height:16px;" />
</span>
<div class="help-tooltip">
<p>Help Message</p>
</div>

</span>

<p>Help Message</p>

</div>

image/quotation.png はクリックするモノです。その画像をクリックすると表示・非表示が切り替えます。

正確にいうなら、画像を囲んでいる span をクリックすると、その直後のタグの表示・非表示を切り替えます。つまりクリックするものは画像でなくてもよく、もっというならツールチップ以外にも使えるということです。

Use helper

Rails prepares helper component.

def help_tooltip(message, size = '16x16')
result = content_tag(:span, {:class => 'help-tooltip-trigger'}) do
image_tag 'icons/question.png', :size => size
end
result += content_tag(:div, {:class => 'help-tooltip'}) do
raw message
end
return result
end

def help_tooltip(message, size = '16x16')

result = content_tag(:span, {:class => 'help-tooltip-trigger'}) do

image_tag 'icons/question.png', :size => size

end

result += content_tag(:div, {:class => 'help-tooltip'}) do

raw message

end

return result

end

このメソッドを次のようにして使うと、上に書いた HTML のように出力されます。

<%=help_tooltip '<p>Help Message</p>', '16x16'%>

1	<%=help_tooltip '<p>Help Message</p>', '16x16'%>

Second argument has default value, so we don’t have to set any value to it.

私がこの tooltip 表示を書き始めたらほかの人が随所で真似し始めたので、もっと楽にできる helper のメソッドを作ったというお話でした。

The Life

Tag Archives: Rails

CakePHP3 How to use partial template like in Rails

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Rails How to execute task in seed

Environment

Solution

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Rails gem to generate Sitemap

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Rails: The Code to show Tooltip

Environment

Base

Use helper

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