146 questions
The value of the update action has not been changed, and there are no errors.Create works fine.views/searches/edit.html.erb<%=form_with(model:@search,local:true)do|f|%> <%=f.label:postal_code...
As for how to set the transaction isolation level, Spring can be set casually by adding @Transactional for each method, or Rails can be set casually by ApplicationRecord.transaction (isolation:read_co...
For Q&A sites like Yahoo Chiebukuro, I think each question has a unique URL.Would it be possible to receive it from the database and display it and give it a unique URL at the same time?If possibl...
The following databases are available:Please let me know if there are any SQL statements that combine the same names but lack data.
I'm a beginner at Rails.How does migration work?My senior taught me the following things.Rails compares the migration file to the schema_migrations table Automatically find and execute unexecuted migr...
Excel has data organized by date in the first column and ID in the first column.I would like to organize this so that it can be used as a database, but please let me know if there is a VBA code that c...
Connecting to IBM DB2 via Visual C++ 2010/ADO connection.I'm creating a program that moves files after adding/updating lines.I tried to roll back when the file move failed, but now I'm committed.Is th...
DELETE does not reduce the size of the FMDB file (xxx.sqlite).As one of the solutions, I thought that if I create a new sqlite file and copy it as much as I need with an insert, I will be able to crea...
When button is clicked and name='action' is POSTed, DELETE is executed(); but At this time, I would like to transition to home.php at the same time.<button type='submit'name='action'value='delete'o...
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