ruby on rails - NameError: uninitialized constant after checking name with .classify -


i have table part of mountable blog engine in rails. table called lines_articles. 

def change  create_table "lines_articles", force: true |t|   t.string   "title"   t.string   "sub_title"   t.text     "content"   t.boolean  "published",        default: false   t.datetime "published_at"   t.string   "hero_image"   t.datetime "created_at",                       null: false   t.datetime "updated_at",                       null: false   t.string   "slug"   t.string   "gplus_url"   t.boolean  "featured",         default: false   t.string   "document"   t.string   "short_hero_image" end

i want show contents in table in rails console, ran .classify make sure didn't screw plural variable, , output was:

 2.2.1 :015 > "lines_articles".classify    => "linesarticle"

so console confirmed naming convention, when run simple linesarticle.all, error: nameerror: uninitialized constant linesarticle.

how can console classify table name , throw nameerror when querying table name?

you have define model class in app/models/lines_article.rb directory.

if you're on rails 5, should this:

class linesarticle < applicationrecord end

if you're on rails 4, should this:

class linesarticle < activerecord::base end

then re-open rails console , try again.


Comments

Post a Comment

Popular posts from this blog

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

sql server - Why does Linq-to-SQL add unnecessary COUNT()? -

here tables: create table customer ( cid int primary key, name varchar(32) ) create table ord ( oid int primary key, cid int foreign key references customer, address varchar(20) ) here's linq-to-sql statement: var aaa = c in db.customer select new { c, o = c.ord.tolist() }; and here's inexplicable query generated linq-to-sql: select [t0].[cid] [cid], [t0].[name] [name], [t1].[oid] [oid], [t1].[cid] [cid2], [t1].[address] [address], (select count(*) [dbo].[ord] [t2] [t2].[cid] = [t0].[cid]) [value] [dbo].[customer] [t0] left outer join [dbo].[ord] [t1] on [t1].[cid] = [t0].[cid] order [t0].[cid], [t1].[oid] i want understand how rid of count(*) part. it's entirely uncalled for! linq needs count(*) in order determine number of entries returned o = c.ord.tolist() .
Read more