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ecto
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A toolkit for data mapping and language integrated query for Elixir
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Files
lib/ecto/exceptions.ex
defmodule Ecto.Query.CompileError do
@moduledoc """
Raised at compilation time when the query cannot be compiled.
"""
defexception [:message]
end
defmodule Ecto.Query.CastError do
@moduledoc """
Raised at runtime when a value cannot be cast.
"""
defexception [:type, :value, :message]
def exception(opts) do
value = Keyword.fetch!(opts, :value)
type = Keyword.fetch!(opts, :type)
msg = Keyword.fetch!(opts, :message)
%__MODULE__{value: value, type: type, message: msg}
end
end
defmodule Ecto.QueryError do
@moduledoc """
Raised at runtime when the query is invalid.
"""
defexception [:message]
def exception(opts) do
message = Keyword.fetch!(opts, :message)
query = Keyword.fetch!(opts, :query)
message = """
#{message} in query:
#{Inspect.Ecto.Query.to_string(query)}
"""
file = opts[:file]
line = opts[:line]
message =
if file && line do
relative = Path.relative_to_cwd(file)
Exception.format_file_line(relative, line) <> " " <> message
else
message
end
%__MODULE__{message: message}
end
end
defmodule Ecto.SubQueryError do
@moduledoc """
Raised at runtime when a subquery is invalid.
"""
defexception [:message, :exception]
def exception(opts) do
exception = Keyword.fetch!(opts, :exception)
query = Keyword.fetch!(opts, :query)
message = """
the following exception happened when compiling a subquery.
#{Exception.format(:error, exception, []) |> String.replace("\n", "\n ")}
The subquery originated from the following query:
#{Inspect.Ecto.Query.to_string(query)}
"""
%__MODULE__{message: message, exception: exception}
end
end
defmodule Ecto.InvalidChangesetError do
@moduledoc """
Raised when we cannot perform an action because the
changeset is invalid.
"""
defexception [:action, :changeset]
def message(%{action: action, changeset: changeset}) do
"""
could not perform #{action} because changeset is invalid.
* Changeset changes
#{inspect changeset.changes}
* Changeset params
#{inspect changeset.params}
* Changeset errors
#{inspect changeset.errors}
"""
end
end
defmodule Ecto.CastError do
@moduledoc """
Raised when a changeset can't cast a value.
"""
defexception [:message]
end
defmodule Ecto.InvalidURLError do
defexception [:message, :url]
def exception(opts) do
url = Keyword.fetch!(opts, :url)
msg = Keyword.fetch!(opts, :message)
msg = "invalid url #{url}, #{msg}"
%__MODULE__{message: msg, url: url}
end
end
defmodule Ecto.NoPrimaryKeyFieldError do
@moduledoc """
Raised at runtime when an operation that requires a primary key is invoked
with a schema that does not define a primary key by using `@primary_key false`
"""
defexception [:message, :schema]
def exception(opts) do
schema = Keyword.fetch!(opts, :schema)
message = "schema `#{inspect schema}` has no primary key"
%__MODULE__{message: message, schema: schema}
end
end
defmodule Ecto.NoPrimaryKeyValueError do
@moduledoc """
Raised at runtime when an operation that requires a primary key is invoked
with a schema missing value for its primary key
"""
defexception [:message, :struct]
def exception(opts) do
struct = Keyword.fetch!(opts, :struct)
message = "struct `#{inspect struct}` is missing primary key value"
%__MODULE__{message: message, struct: struct}
end
end
defmodule Ecto.ChangeError do
defexception [:message]
end
defmodule Ecto.NoResultsError do
defexception [:message]
def exception(opts) do
query = Keyword.fetch!(opts, :queryable) |> Ecto.Queryable.to_query
msg = """
expected at least one result but got none in query:
#{Inspect.Ecto.Query.to_string(query)}
"""
%__MODULE__{message: msg}
end
end
defmodule Ecto.MultipleResultsError do
defexception [:message]
def exception(opts) do
query = Keyword.fetch!(opts, :queryable) |> Ecto.Queryable.to_query
count = Keyword.fetch!(opts, :count)
msg = """
expected at most one result but got #{count} in query:
#{Inspect.Ecto.Query.to_string(query)}
"""
%__MODULE__{message: msg}
end
end
defmodule Ecto.MigrationError do
defexception [:message]
end
defmodule Ecto.StaleEntryError do
defexception [:message]
def exception(opts) do
action = Keyword.fetch!(opts, :action)
struct = Keyword.fetch!(opts, :struct)
msg = """
attempted to #{action} a stale struct:
#{inspect struct}
"""
%__MODULE__{message: msg}
end
end
defmodule Ecto.ConstraintError do
defexception [:type, :constraint, :message]
def exception(opts) do
type = Keyword.fetch!(opts, :type)
constraint = Keyword.fetch!(opts, :constraint)
changeset = Keyword.fetch!(opts, :changeset)
action = Keyword.fetch!(opts, :action)
constraints =
case changeset.constraints do
[] ->
"The changeset has not defined any constraint."
constraints ->
"The changeset defined the following constraints:\n\n" <>
Enum.map_join(constraints, "\n", &" * #{&1.type}: #{&1.constraint}")
end
msg = """
constraint error when attempting to #{action} struct:
* #{type}: #{constraint}
If you would like to convert this constraint into an error, please
call #{type}_constraint/3 in your changeset and define the proper
constraint name. #{constraints}
"""
%__MODULE__{message: msg, type: type, constraint: constraint}
end
end