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Run a single migration file
...B) which relies on the fact that require returns an array of class names:
script/runner 'require("db/migrate/20090408054532_add_foos.rb").first.constantize.up'
Note that if you do this, it probably won't update the schema_migrations table, but it seems like that's what you want anyway.
...
Should ol/ul be inside or outside?
... ol element:
Categories: Flow content.
Content model: Zero or more li and script-supporting elements.
The first part says that p elements can only contain phrasing content (which are “inline” elements like span and strong).
The second part says ols are flow content (“block” elements like ...
How to check version of python modules?
..."^Version: ", ""); print}'. You could probably get away with a simpler AWK script, but the aforementioned will be safer for any edge cases.
– Six
Oct 2 '15 at 12:09
3
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How to remove the arrow from a select element in Firefox
...;div class='.div'>{the text of the the current selection updated by javascript}</div>
<select class='select'>
<option value='foo'>bar</option>
</select>
Update the div's innerHTML with javascript. Easypeasy with jQuery:
$('.select').click(function(event))...
How can I drop all the tables in a PostgreSQL database?
...
You can write a query to generate a SQL script like this:
select 'drop table "' || tablename || '" cascade;' from pg_tables;
Or:
select 'drop table if exists "' || tablename || '" cascade;' from pg_tables;
In case some tables are automatically dropped due to ...
How can I install pip on Windows?
... TechNet).
This installs the pip package, which (in Windows) contains ...\Scripts\pip.exe that path must be in PATH environment variable to use pip from the command line (see the second part of 'Alternative Instructions' for adding it to your PATH,
Alternative instructions
The official documentat...
What is the difference between HTML tags and ?
...ly doubtful that any of these elements are going anywhere. There is a javascript hack that you will need to use if you want to style these elements in some older version of IE - You need to create one of each element using document.createElement before any of those elements are specified in your so...
What does “./bin/www” do in Express 4.x?
.../ directory serves as a location where you can define your various startup scripts. The www is an example to start the express app as a web server.
Ultimately, you could have different scripts like test, stop, or restart, etc. Having this structure allows you to have different startup configuration...
PostgreSQL: How to change PostgreSQL user password?
...an you use environment variables here? I want to automate this in a deploy script
– TheRealChx101
Jul 21 '19 at 20:46
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Add querystring parameters to link_to
...4174493/445908
Otherwise , check this answer: params.merge and cross site scripting
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