article: add latest article about activerecord

PotatoPudding · Oct 21, 2017 · 53853d4 · 53853d4
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diff --git a/contents/Rails/activerecord.md b/contents/Rails/activerecord.md
diff --git a/contents/Rails/images/activerecord/15079789320881.jpg b/contents/Rails/images/activerecord/15079789320881.jpg
diff --git a/contents/Rails/images/activerecord/15079789363342.jpg b/contents/Rails/images/activerecord/15079789363342.jpg
diff --git a/contents/Rails/images/activerecord/abstract-adapter-and-much-more.png b/contents/Rails/images/activerecord/abstract-adapter-and-much-more.png
diff --git a/contents/Rails/images/activerecord/active-record-relation-delegation.png b/contents/Rails/images/activerecord/active-record-relation-delegation.png
diff --git a/contents/Rails/images/activerecord/activemodel-validators.png b/contents/Rails/images/activerecord/activemodel-validators.png
diff --git a/contents/Rails/images/activerecord/activerecord-ancestor-builders.png b/contents/Rails/images/activerecord/activerecord-ancestor-builders.png
diff --git a/contents/Rails/images/activerecord/activerecord-architecture.png b/contents/Rails/images/activerecord/activerecord-architecture.png
diff --git a/contents/Rails/images/activerecord/activerecord-associations.png b/contents/Rails/images/activerecord/activerecord-associations.png
diff --git a/contents/Rails/images/activerecord/activerecord-base-save.png b/contents/Rails/images/activerecord/activerecord-base-save.png
diff --git a/contents/Rails/images/activerecord/activerecord-hasmany-ancestors.png b/contents/Rails/images/activerecord/activerecord-hasmany-ancestors.png
diff --git a/contents/Rails/images/activerecord/activerecord-migrations.png b/contents/Rails/images/activerecord/activerecord-migrations.png
diff --git a/contents/Rails/images/activerecord/activerecord-reflections.png b/contents/Rails/images/activerecord/activerecord-reflections.png
diff --git a/contents/Rails/images/activerecord/activerecord-relation-value-methods.png b/contents/Rails/images/activerecord/activerecord-relation-value-methods.png
diff --git a/contents/Rails/images/activerecord/actual-callstack-for-activerecord-base-save.png b/contents/Rails/images/activerecord/actual-callstack-for-activerecord-base-save.png
diff --git a/contents/Rails/images/activerecord/callstack-for-belongs-to-association-getter.png b/contents/Rails/images/activerecord/callstack-for-belongs-to-association-getter.png
diff --git a/contents/Rails/images/activerecord/callstack-for-belongs-to-association-setter.png b/contents/Rails/images/activerecord/callstack-for-belongs-to-association-setter.png
diff --git a/contents/Rails/images/activerecord/database-statement-insert.png b/contents/Rails/images/activerecord/database-statement-insert.png
diff --git a/contents/Rails/images/activerecord/habtm-association-table-name.png b/contents/Rails/images/activerecord/habtm-association-table-name.png
diff --git a/contents/Rails/images/activerecord/many-to-many-associations.png b/contents/Rails/images/activerecord/many-to-many-associations.png
diff --git a/contents/Rails/images/activerecord/one-to-many-association.png b/contents/Rails/images/activerecord/one-to-many-association.png
diff --git a/contents/Rails/images/activerecord/rake-db-migrate.png b/contents/Rails/images/activerecord/rake-db-migrate.png