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local mymodule = {}
-- Helper library for model functions for viewing and editing database entries
-- Relies heavily on the acf-lib/db.lua library (db object passed into each function)
function mymodule.list_databases(db, self, clientdata)
local retval = {}
local errtxt
local res, err = pcall(function()
retval = db.listdatabases()
end)
if not res and err then
errtxt = err
end
return cfe({ type="list", value=retval, label="List of Databases", errtxt=errtxt })
end
function mymodule.list_tables(db, self, clientdata)
local retval = {}
local errtxt
local res, err = pcall(function()
local connected = db.databaseconnect()
retval = db.listtables()
if connected then db.databasedisconnect() end
end)
if not res and err then
errtxt = err
end
return cfe({ type="list", value=retval, label="List of Database Tables", errtxt=errtxt })
end
function mymodule.list_table_entries(db, self, clientdata)
local table = clientdata.table
local retval = {}
retval.table = cfe({ value=table or "", label="Table" })
retval.fields = cfe({ type="list", value={}, label="List of Table Fields" })
retval.entries = cfe({ type="structure", value={}, label="List of Database Entries" })
local errtxt
local res, err = pcall(function()
local connected = db.databaseconnect()
local tables = db.listtables()
retval.table.errtxt = "Table does not exist"
errtxt = "Table does not exist"
for i,t in ipairs(tables) do
if t == table then
retval.table.errtxt = nil
errtxt = nil
retval.entries.value = db.getselectresponse("SELECT * FROM "..db.escape(table).." ORDER BY id ASC") or {}
retval.fields.value = db.listcolumns(table) or {}
end
end
if connected then db.databasedisconnect() end
end)
if not res and err then
errtxt = err
end
return cfe({ type="group", value=retval, label="Database Table Entries", errtxt=errtxt })
end
function mymodule.get_new_table_entry(db, self, clientdata)
local retval = {}
retval.table = cfe({ value=clientdata.table or "", label="Table", errtxt="Table does not exist", readonly=true, seq=0 })
local errtxt = "Table does not exist"
if clientdata.table and clientdata.table ~= "" then
local res, err = pcall(function()
local connected = db.databaseconnect()
local tables = db.listtables()
for i,t in ipairs(tables) do
if t == clientdata.table then
retval.table.errtxt = nil
errtxt = nil
break
end
end
if not errtxt then
local fields = db.listcolumns(clientdata.table)
for i,f in ipairs(fields) do
retval[f] = cfe({ label=f, seq=i })
end
if retval.id then
retval.id.type = "hidden"
end
end
if connected then db.databasedisconnect() end
end)
if not res and err then
errtxt = err
end
end
return cfe({ type="group", value=retval, label="Database Table Entry", errtxt=errtxt })
end
function mymodule.get_table_entry(db, self, clientdata)
local retval = mymodule.get_new_table_entry(db, self, clientdata)
if not retval.value.table.errtxt and retval.value.id then
retval.value.id.type = "text"
local res, err = pcall(function()
local connected = db.databaseconnect()
retval.errtxt = "Entry does not exist"
if retval.value.id then
retval.value.id.value = clientdata.id or ""
retval.value.id.errtxt = "Entry does not exist"
if clientdata.id and clientdata.id ~= "" then
local entry = db.getselectresponse("SELECT * FROM "..db.escape(clientdata.table).." WHERE id='"..db.escape(clientdata.id).."'")
if entry and #entry > 0 then
for n,v in pairs(entry[1]) do
if retval.value[n] then retval.value[n].value = v end
if n == "id" then
retval.value.id.readonly = true
retval.value.id.errtxt = nil
retval.errtxt = nil
end
end
end
end
end
if connected then db.databasedisconnect() end
end)
if not res and err then
retval.errtxt = err
end
end
return retval
end
function mymodule.create_table_entry(db, self, entry, action)
return mymodule.update_table_entry(db, self, entry, action, true)
end
function mymodule.update_table_entry(db, self, entry, action, create)
local success = true
local errtxt
-- Validate the settings
-- relying on get_table_entry to do the validation of table
if entry.value.table.value == "" or entry.value.table.errtxt then
success = false
entry.value.table.errtxt = "Table does not exist"
end
if not create then
if not entry.value.id then
success = false
elseif not entry.value.id.value or entry.value.id.value == "" then
success = false
entry.value.id.errtxt = "Invalid id"
end
end
if success then
local res, err = pcall(function()
local connected = db.databaseconnect()
local tables = db.listtables()
success = false
entry.value.table.errtxt = "Table does not exist"
for i,t in ipairs(tables) do
if t == entry.value.table.value then
success = true
entry.value.table.errtxt = nil
break
end
end
if success and not create then
local sql = "SELECT * FROM "..db.escape(entry.value.table.value).." WHERE id='"..db.escape(entry.value.id.value).."'"
local tmp = db.getselectresponse(sql)
if not tmp or #tmp == 0 then
success = false
entry.value.id.errtxt = "Entry does not exist"
errtxt = "Entry does not exist"
end
end
if success then
local names = {}
local values = {}
for n,v in pairs(entry.value) do
if n ~= "table" and n ~= "id" then
names[#names+1] = db.escape(n)
values[#values+1] = db.escape(v.value)
end
end
if create then
sql = "INSERT INTO "..db.escape(entry.value.table.value).." ("..table.concat(names, ", ")..") VALUES('"..table.concat(values, "', '").."')"
else
sql = "UPDATE "..db.escape(entry.value.table.value).." SET ("..table.concat(names, ", ")..") = ('"..table.concat(values, "', '").."') WHERE id='"..db.escape(entry.value.id.value).."'"
end
db.runsqlcommand(sql)
end
if connected then db.databasedisconnect() end
end)
if not res and err then
success = false
errtxt = err
end
end
if not success then
if create then
entry.errtxt = errtxt or "Failed to create entry"
else
entry.errtxt = errtxt or "Failed to save entry"
end
end
return entry
end
function mymodule.get_delete_table_entry(db, self, clientdata)
local retval = {}
retval.table = cfe({ value=clientdata.table or "", label="Table", seq=0 })
retval.id = cfe({ value=clientdata.id or "", label="ID", seq=1 })
return cfe({ type="group", value=retval, label="Delete Database Table Entry" })
end
function mymodule.delete_table_entry(db, self, entry)
entry.errtxt = "Failed to delete table entry"
if entry.value.table.value == "" then
entry.value.table.errtxt = "Invalid table"
elseif entry.value.id.value == "" then
entry.value.id.errtxt = "Invalid entry"
else
local res, err = pcall(function()
local connected = db.databaseconnect()
entry.value.table.errtxt = "Invalid table"
local tables = db.listtables()
for i,t in ipairs(tables) do
if t == entry.value.table.value then
entry.value.table.errtxt = nil
break
end
end
if not entry.value.table.errtxt then
local sql = "DELETE FROM "..db.escape(entry.value.table.value).." WHERE id='"..db.escape(entry.value.id.value).."'"
db.runsqlcommand(sql)
entry.errtxt = nil
end
if connected then db.databasedisconnect() end
end)
if not res and err then
entry.errtxt = err
end
end
return entry
end
return mymodule
|
