Large Rails projects benefit from keeping application tasks slim, separating the executable wrapper from the business code, and testing both rake tasks and scripts.

Bug fixes for Unpoly 3.7.1–3.7.3 address lost form input, validation race conditions, autosubmit regressions, and fragment targeting issues in complex asynchronous flows.

Wrap text around a circular element by floating it and using shape-outside with content-box; matching shape-margin to the element margin keeps spacing consistent.

Cucumber step for checking table rows in Capybara, with optional exact matching, row order control, wildcards, and support for colspan or rowspan tables.

Conditional after_save callbacks can silently lose earlier :if conditions when the same method is registered twice. Combine predicates or move the logic into the callback.

Virtual attributes can need validation messages shown on a different field, especially with Paperclip attachments and related file-name checks.

Global Rails settings can live in YAML files with environment-specific overrides via config_for, avoiding constant collisions and supporting fetch or bang accessors.

BuildKit heredocs make Dockerfile multiline commands easier to read, but compatibility with older clients and unclear command chaining limit practical use.

Useful browser devtools techniques for finding tricky JavaScript bugs, inspecting calls, and pausing execution on changes to state, URLs, or DOM properties.

Collaborative coding in RubyMine lets others join your editor for pairing, review, or shared terminal access, with permissions from read-only to full access.

git blame output can be noisy after formatting or mass-renaming commits. --ignore-revs-file keeps selected revisions out of blame and can be enabled per project.

Loading JavaScript with defer avoids blocking rendering, runs after parsing, and still before DOMContentLoaded, making it the safer default for head scripts.

Context-dependent word completion in RubyMine speeds coding and reduces typos; Cyclic Expand Word can be remapped on German keyboards.

Unlogged PostgreSQL tables can speed up Rails test suites by skipping the write-ahead log, but they raise crash-related data loss risk and stay unsuitable for production.

Nested form deletions can inflate aggregated totals when child records marked for removal are still counted. marked_for_destruction? filters them out before saving.

Open the next failing spec directly in the IDE to cut down the back-and-forth between test runs and debugging. RSpec --next-failure and JSON output support the workflow.

Capistrano 3 can execute an arbitrary shell command across all app servers, useful for grepping logs or bulk remote checks.

Long-running projects need regular upkeep to avoid stale dependencies, growing data, and bloated storage that raise costs and slow applications.

Heredoc indentation and newline handling in Ruby and Rails varies by syntax and helper. <<~, strip_heredoc, and squish control unindentation and whitespace cleanup.

Database tables have no inherent row order; pagination with LIMIT needs a unique ORDER BY, and Rails first/last default to id.

Redundant GitLab CI pipelines can waste runner capacity when new pushes arrive. interruptible: true and auto-cancel help stop outdated test runs and keep the latest commit building.

Floated children can collapse their container, but display: flow-root creates a new block formatting context without clearfix hacks. IE11 lacks support.

Non-HTML Rails responses can differ from params[:format]; respond_to also matches MIME negotiation, so authorization should not depend on a URL suffix alone.