質問編集履歴
9
@teacher = Teacher.new が抜けていたので追加しました
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@@ -94,6 +94,8 @@
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def new
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@teacher = Teacher.new
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@place = Place.all
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@teacher.teachers_places.build
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8
pluck(:id)の間違いをただしました
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test
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@@ -188,19 +188,15 @@
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-
rails cでのplack
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rails cでのplack(:id)の結果
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```ここに言語を入力
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```ここに言語を入力
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-
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-
irb(main):00
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irb(main):003:0> Place.pluck(:id)
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(
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(0.4ms) SELECT "places"."id" FROM "places"
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=> [1, 2, 3, 4]
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-
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TypeError (no implicit conversion of Symbol into Integer)
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```
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7
pluck[:id]の結果を追加
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test
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@@ -84,7 +84,7 @@
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84
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87
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-
teacher_controller.rbのconrilmアクションとcreateアクションとStrong Parametersです
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87
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teacher_controller.rbのnewアクションとconrilmアクションとcreateアクションとStrong Parametersです
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```ここに言語を入力
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@@ -92,6 +92,16 @@
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def new
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@place = Place.all
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@teacher.teachers_places.build
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end
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def confirm
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@place = Place.all
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@@ -178,4 +188,22 @@
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rails cでのplack[:id]の結果
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```ここに言語を入力
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irb(main):002:0> Place.pluck[:id]
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(7.8ms) SELECT "places".* FROM "places"
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Traceback (most recent call last):
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1: from (irb):2
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TypeError (no implicit conversion of Symbol into Integer)
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```
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質問がわかりにくく申し訳ありません。ご回答のほどよろしくお願いします。
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6
Strong Parametersを追加しました
test
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test
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@@ -84,9 +84,13 @@
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84
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-
teacher_controller.rbのconrilmアクションとcreateアクションです
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87
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teacher_controller.rbのconrilmアクションとcreateアクションとStrong Parametersです
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```ここに言語を入力
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class TeachersController < ApplicationController
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def confirm
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end
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private
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def teacher_params
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params.require(:teacher).permit(places_attributes: [:id], place_ids:[])
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end
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end
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```
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5
題名を変更しました
test
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@@ -1 +1 @@
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1
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-
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1
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登録確認画面で中間テーブルの値 (place_ids)を使いたい
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test
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File without changes
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4
誤字がありました
test
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test
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@@ -144,7 +144,7 @@
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```ここに言語を入力
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"teacher"=>{place_ids"=>["3", "4"]}
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"teacher"=>{"place_ids"=>["3", "4"]}
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```
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@@ -152,7 +152,7 @@
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```ここに言語を入力
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"teacher"=>{places_attributes"=>{"0"=>{"id"=>"3"}, "1"=>{"id"=>"4"}}}
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"teacher"=>{"places_attributes"=>{"0"=>{"id"=>"3"}, "1"=>{"id"=>"4"}}}
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```
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3
teacher.rbの更新 paramsの内容の更新
test
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test
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@@ -72,6 +72,8 @@
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has_many :places, through: :teachers_places, dependent: :destroy
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accepts_nested_attributes_for :places
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validates :place_ids, presence: true
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end
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@@ -142,7 +144,7 @@
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```ここに言語を入力
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place_ids"=>["3", "4"]
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"teacher"=>{place_ids"=>["3", "4"]}
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```
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@@ -150,7 +152,7 @@
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```ここに言語を入力
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places_attributes"=>{"0"=>{"id"=>"3"}, "1"=>{"id"=>"4"}}
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"teacher"=>{places_attributes"=>{"0"=>{"id"=>"3"}, "1"=>{"id"=>"4"}}}
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```
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2
アクション,viewを更新 アクションに渡っているparamsの追加
test
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test
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@@ -14,13 +14,13 @@
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<div class="field">
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<%= f.la
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<%= f.fields_for :places do |place_f| %>
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<%= f.
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<%= f.label :"指導場所" %>
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<%
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<%= place_f.hidden_field :id %>
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<p><%= place.name %></p>
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<p><%= place_f.object.name %></p>
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<% end %>
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@@ -86,7 +86,7 @@
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```ここに言語を入力
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-
def confirm
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+
def confirm
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@place = Place.all
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@@ -108,7 +108,11 @@
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def create
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@place = Place.all
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113
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@teacher = Teacher.new(teacher_params)
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114
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@teacher.place_ids = params[:teacher][:places_attributes]
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if params[:back]
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@@ -128,7 +132,25 @@
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end
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```
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131
136
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138
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アクションに渡っているparamsの内容
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confirm
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142
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```ここに言語を入力
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144
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place_ids"=>["3", "4"]
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```
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148
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create
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150
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```ここに言語を入力
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152
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+
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+
places_attributes"=>{"0"=>{"id"=>"3"}, "1"=>{"id"=>"4"}}
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132
154
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```
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134
156
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1
説明を詳しくしました
test
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File without changes
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test
CHANGED
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@@ -1,4 +1,6 @@
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1
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-
rails初心者です。Teacher登録確認画面を作っています。確認画面の時にhidden_fieldを用いているのですが、place_idsなどの中間テーブルを使った値が使えません。どのようにすればよろしいでしょうか。
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1
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+
rails初心者です。Teacher登録確認画面を作っています。確認画面の時にhidden_fieldを用いているのですが、place_idsなどの中間テーブルを使った値が使えず、 validates :place_ids, presence: trueに引っかかり、Teacherを保存することができません。どのようにすればよろしいでしょうか。
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6
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@@ -58,6 +60,28 @@
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```
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60
62
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63
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+
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64
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+
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65
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+
teacher.rbです
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66
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+
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67
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+
```ここに言語を入力
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68
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+
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69
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+
class Teacher < ApplicationRecord
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70
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+
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71
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+
has_many :teachers_places, foreign_key: 'teacher_id', dependent: :destroy
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72
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+
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73
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+
has_many :places, through: :teachers_places, dependent: :destroy
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74
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+
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75
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+
validates :place_ids, presence: true
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76
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77
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+
end
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78
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79
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80
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81
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+
```
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82
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+
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83
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+
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84
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+
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61
85
|
teacher_controller.rbのconrilmアクションとcreateアクションです
|
|
62
86
|
|
|
63
87
|
```ここに言語を入力
|