質問編集履歴
3
質問の修正
test
CHANGED
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@@ -1 +1 @@
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1
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-
DM一覧を表示させたい
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1
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+
自分のDM一覧を表示させたい
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test
CHANGED
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@@ -1,6 +1,5 @@
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1
1
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### 困っている箇所
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2
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-
rooms_controllerのindex
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3
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-
undefined method `user_id' for nil:NilClass
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2
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+
DMを作成し、views/rooms/index.html.erbに自身のユーザーが入っているメッセージだけを表示したくてrooms_controllerのindexアクションに自身のDMの部屋(roomカラム)を取得する機能を書いたのですが、エラーが発生してしまい、調べてみたところ、モデル関連が怪しいと思い、room.rbをhas_many :usersを追加してみて修正したのですが、変化しませんでした。
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4
3
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5
4
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エラー
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6
5
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```
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2
修正
test
CHANGED
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@@ -1 +1 @@
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1
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-
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1
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+
DM一覧を表示させたい
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test
CHANGED
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File without changes
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1
質問の修正
test
CHANGED
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@@ -1 +1 @@
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1
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-
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1
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+
undefined method `user_id' for nil:NilClassのエラーを解消したい
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test
CHANGED
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@@ -1,46 +1,58 @@
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1
1
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### 困っている箇所
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2
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-
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2
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+
rooms_controllerのindex箇所の掲載者のuserを入れる@anotherEntriesの箇所でエラーが起こってしまいました。
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3
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+
undefined method `user_id' for nil:NilClass
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3
4
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4
5
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エラー
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5
6
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```
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6
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-
NoMethodError
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7
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+
NoMethodError at /rooms
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7
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-
undefined method `r
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8
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+
undefined method `user_id' for nil:NilClass
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9
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+
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10
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+
Hint: Something is `nil` when it probably shouldn't be.
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11
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+
```
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12
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+
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13
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+
rooms_controller
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14
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+
```
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8
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-
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15
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+
class RoomsController < ApplicationController
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9
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-
3
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10
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-
4
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11
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-
5
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12
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-
6
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13
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-
7
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14
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-
8
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15
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-
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16
16
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before_action :authenticate_user!
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17
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+
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17
18
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def index
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18
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-
@
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19
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+
@currentEntries = current_user.entries
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20
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+
myRoomIds = []
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21
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+
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22
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+
@currentEntries.each do |entry|
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23
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+
myRoomIds << entry.room.id
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24
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+
end
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25
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+
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26
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+
@anotherEntries = Entry.where(room_id: myRoomIds).where('user_id != ?',@plan.user_id)
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19
27
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end
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20
28
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21
29
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def create
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30
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+
@plan = Plan.find(params[:entry][:plan_id])
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31
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+
@room = Room.create(room_name: @plan.title)
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32
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+
@entry1 = Entry.create(room_id: @room.id, user_id: current_user.id)
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33
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+
@entry2 = Entry.create(params.require(:entry).permit(:user_id, :room_id).merge(room_id: @room.id))
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34
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+
redirect_to "/rooms/#{@room.id}"
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35
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+
end
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22
36
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37
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+
def show
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38
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+
@room = Room.find(params[:id])
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23
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-
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39
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+
if Entry.where(user_id: current_user.id,room_id: @room.id).present?
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40
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+
@messages = @room.messages
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41
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+
@message = Message.new
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42
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+
@entries = @room.entries
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43
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+
else
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44
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+
redirect_back(fallback_location: root_path)
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45
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+
end
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46
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+
end
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47
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+
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48
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+
private
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49
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+
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50
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+
def set_plan
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51
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+
@plan = Plan.find(params[:id])
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52
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+
end
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53
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+
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54
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+
end
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24
55
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25
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-
Application Trace | Framework Trace | Full Trace
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26
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-
app/controllers/rooms_controller.rb:5:in `index'
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27
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-
Request
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28
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-
Parameters:
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29
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-
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30
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-
None
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31
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-
Toggle session dump
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32
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-
Toggle env dump
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33
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-
Response
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34
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-
Headers:
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35
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-
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36
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-
None
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37
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-
```
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38
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-
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39
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-
rooms_controller indexアクション
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40
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-
```
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41
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-
def index
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42
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-
@my_rooms = current_user.rooms.order(created_at: :desc)
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43
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-
end
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44
56
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```
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45
57
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|
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46
58
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room.rb
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|
@@ -48,8 +60,10 @@
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|
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48
60
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class Room < ApplicationRecord
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49
61
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has_many :entries, dependent: :destroy
|
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50
62
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has_many :messages, dependent: :destroy
|
|
51
|
-
has_many :r
|
|
63
|
+
has_many :users
|
|
64
|
+
has_many :plans
|
|
52
65
|
end
|
|
66
|
+
|
|
53
67
|
```
|
|
54
68
|
|
|
55
69
|
views/rooms/index.html.erb
|
|
@@ -62,4 +76,58 @@
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|
|
62
76
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</div>
|
|
63
77
|
```
|
|
64
78
|
|
|
79
|
+
### 質問
|
|
80
|
+
@anotherEntries = Entry.where(room_id: myRoomIds).where('user_id != ?',@plan.user_id)
|
|
81
|
+
で掲載者のuserを入れたいのですが、user_idがnilの為、@plan = Plan.find(params[:id])でplan_idからplanを抜き出し、さらにそこからplan.user_idを抜き出して@anotherEntries のuser_idに代入させようとしたのですが、
|
|
82
|
+
```
|
|
83
|
+
ActiveRecord::RecordNotFound at /rooms
|
|
84
|
+
Couldn't find Plan without an ID
|
|
85
|
+
```
|
|
86
|
+
と表示され,調べたところルーティングに関しての情報が多くあったのですが、
|
|
87
|
+
ルーティングを見ても問題ないと思います。
|
|
88
|
+
@plan = Plan.find(params[:id])でレコードから抜き出すやり方は正しいでしょうか？
|
|
89
|
+
|
|
90
|
+
!追記
|
|
91
|
+
routes.rb
|
|
92
|
+
```
|
|
93
|
+
Rails.application.routes.draw do
|
|
94
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+
devise_for :users, controllers: { registrations: 'users/registrations' }
|
|
95
|
+
root to: 'toppages#index'
|
|
65
96
|
|
|
97
|
+
get "users/show" => "users#show"
|
|
98
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+
devise_scope :users do
|
|
99
|
+
get '/users', to: redirect("/users/sign_up")
|
|
100
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+
end
|
|
101
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+
resources :users do
|
|
102
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+
member do
|
|
103
|
+
get :followings
|
|
104
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+
get :followers
|
|
105
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+
get :likes
|
|
106
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+
end
|
|
107
|
+
collection do
|
|
108
|
+
get :search
|
|
109
|
+
end
|
|
110
|
+
end
|
|
111
|
+
resources :users
|
|
112
|
+
resources :plans
|
|
113
|
+
resources :relationships, only: [:create, :destroy]
|
|
114
|
+
resources :favorites, only: [:create, :destroy]
|
|
115
|
+
resources :messages, only: [:create]
|
|
116
|
+
resources :rooms
|
|
117
|
+
end
|
|
118
|
+
```
|
|
119
|
+
|
|
120
|
+
routes.rb
|
|
121
|
+
```
|
|
122
|
+
rooms GET /rooms(.:format) rooms#index
|
|
123
|
+
POST /rooms(.:format) rooms#create
|
|
124
|
+
new_room GET /rooms/new(.:format) rooms#new
|
|
125
|
+
edit_room GET /rooms/:id/edit(.:format) rooms#edit
|
|
126
|
+
room GET /rooms/:id(.:format) rooms#show
|
|
127
|
+
PATCH /rooms/:id(.:format) rooms#update
|
|
128
|
+
PUT /rooms/:id(.:format) rooms#update
|
|
129
|
+
DELETE /rooms/:id(.:format) rooms#destroy
|
|
130
|
+
```
|
|
131
|
+
|
|
132
|
+
|
|
133
|
+
|