在Rails 4.1上使用單表繼承的嵌套表單字段

我到處搜索，但沒有找到任何解決方案。我正在使用Rails 4.1 nested_form和單表繼承。我有型號 - suspects和victims繼承自型號person。每個alert有許多suspects和許多victims 提交時，它只填充alert數據到數據庫中，但不填充它的nested_attributes。請參閱型號名稱alert及其型號。通過筆者在Rails 4.1上使用單表繼承的嵌套表單字段

刪除鏈接什麼，我得到的是：

Started POST "/alerts" for 127.0.0.1 at 2014-04-25 13:50:26 -0500 
Processing by AlertsController#create as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"4RHZ6i0eWIWnyYwmick7VlmGouTRiTFciKiQUw/Ea54=", "alert"=>{"victims_attributes"=>{"0"=>{"first_name"=>"", "last_name"=>"", "race"=>"", "gender"=>"", "hair_color"=>"", "eye_color"=>"", "height_ft"=>"", "height_inch"=>"", "age"=>"", "age_unit"=>"", "birth_date"=>"__/__/____", "weight"=>"", "additional_info"=>"", "_destroy"=>"false"}}, "created_at"=>"____/__/__ __:__", "nic"=>"", "investigating_officer_name"=>"", "investigating_officer_title"=>"", "investigating_officer_phone"=>"", "agency_name"=>"", "agency_phone"=>"", "reporting_agency_phone"=>"", "reporting_agency_email"=>""}, "commit"=>"Create Alert"} 
    User Load (0.0ms) SELECT "users".* FROM "users" WHERE "users"."id" = 8 ORDER BY "users"."id" ASC LIMIT 1 
    (0.0ms) BEGIN 
    SQL (2.0ms) INSERT INTO "alerts" ("agency_name", "agency_phone", "created_at", "investigating_officer_name", "investigating_officer_phone", "investigating_officer_title", "nic", "reporting_agency_email", "reporting_agency_phone", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING "id" [["agency_name", ""], ["agency_phone", ""], ["created_at", "2014-04-25 18:50:26.422890"], ["investigating_officer_name", ""], ["investigating_officer_phone", ""], ["investigating_officer_title", ""], ["nic", ""], ["reporting_agency_email", ""], ["reporting_agency_phone", ""], ["updated_at", "2014-04-25 18:50:26.422890"]] 
    (62.0ms) COMMIT 
Redirected to http://127.0.0.1:3000/alerts 
Completed 302 Found in 87ms (ActiveRecord: 66.0ms)

但我也期待其nested_attributes（使用STI）犯罪嫌疑人，在查詢車輛和受害者太多，但它沒有發生。

任何幫助/建議欣賞。

我期待這個查詢顯示兩次一個是受害者和一個是嫌疑人。我在日誌中沒有看到任何錯誤。

SQL (2.0ms) INSERT INTO "people" ("additional_info", "age_unit", "alert_id", "created_at", "eye_color", "first_name", "gender", "hair_color", "last_name", "race", "type", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12) RETURNING "id" [["additional_info", ""], ["age_unit", ""], ["alert_id", 16], ["created_at", "2014-04-25 19:27:29.080890"], ["eye_color", ""], ["first_name", ""], ["gender", ""], ["hair_color", ""], ["last_name", ""], ["race", ""], ["type", "victim"], ["updated_at", "2014-04-25 19:27:29.080890"]] 

SQL (2.0ms) INSERT INTO "vehicle" ("additional_info", "age_unit", "alert_id", "created_at", "eye_color", "first_name", "gender", "hair_color", "last_name", "race", "type", "updated_at") .....

來源

2014-04-25 jimagic

您沒有在表單中傳遞任何受害者或嫌疑人數據。由於'suspects_attributes'完全缺失，且'victim_attributes'中所有鍵的值都爲空（「」）。那麼，問題是什麼？ –

Kirti，我輸入了所有屬性的數據，但它根本不會填充到數據庫表中。 – jimagic

Kirti，我不知道究竟是什麼意思？即使你沒有通過任何東西，它仍然會將數據視爲空白並堅持數據庫。我輸入了所有數據並創建了可疑，受害者，並且車輛不會在數據庫中持續存在，但警報的所有屬性都會持續存在。 – jimagic

它發生，因爲你逝去的額外form標籤，檢查源代碼。您不可以在fields_for內創建form標籤。

來源

2014-04-28 03:45:46

我的評論沒有錯。 – jimagic

謝謝，我做到了。 –

在Rails 4.1上使用單表繼承的嵌套表單字段

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